 Ask an engineer everybody and welcome to ask an engineer. It's me lady to the engineer with me on mr Mr. Lady on camera control and boys. I'm on mr. Camera. He's on mr. Camera We've got a jam jam packed show today. I mean it's we're gonna try to finish At around nine o'clock, but it's going to be a big push Tons of new products and video clips and it's done out. Yes. We get the ion and pi and From the mailbag Jobboard whatever. I don't know. There's just so much stuff here So much so that maybe the cpu is like 25 which is pretty high for an m2 mac Let's get right into it. Mr. Lady at our what's on tonight's mega show on tonight's show The code is since a s c n s idle makes sense when we get new products, but you can use the code now expires tonight midnight eastern time Talk about some of our live shows including show and tell which we just had a moment ago We will go over desk of lady at which we had earlier in the week Including some great search Have some circuit python news and more from the python or hardware newsletter some open source hardware news products projects code Learn guides We have some advanced manufacturing. It's live factory footage from ate a fruit some 3d printing I don't pi where we introduced new products Brought to you by digikey this week. It's silicon labs. We have a ginormous top secret section This week we got new products. We answer your questions. We do that on discord because there's so many places to stream to Can only do the questions in one spot So go over on discord and put your questions there We'll get through them at the end of the show or we'll intersperse some between things if we can Interference it slash discord all that and more on you guessed it Okay, uh, lady the code is sincey and people get free stuff as they check out. What do they get? Yes, we still have freebies. We've got the half size promo proto when you order $99 or more If you order 149 or more you get a kb 2040 It's a pro micro shaped pinout compatible mic control board with an rp 2040 Stemic ut and eight megabytes of flash memory. So it's great for all sorts of projects 199 sorry 199 or more you get free ups ground shipping and we'll talk a little bit more about that ups ground shipping in a moment and 299 or more If you purchase you'll get a free circuit playground express all in one development board featuring the samd 21 with 10 rgv leds buttons sensors accelerometers capacitive touch pads and more It's great for learning arduino make code circuit python micro python Go lang micro list. What have you code at orb cs discoveries? It's supported by this wonderful on one board that we have back in stock Okay, and then in the news because some of you will ask or know about this or it might be nationwide or worldwide news soon um The teamsters who are the union who represents? The ups workers 340 000 of them are basically saying like we're gonna go and strike. So we have Multiple ways for you to get your packages. We have postal service. We have dhl We've always used ups because we get the best rates with ups, but we're flipping the switch on fedex So you'll be able to get your shipments no matter what it's gonna probably if this happens This is going to be one of the most disruptive uh strikes probably in the world It's a huge chunk of like the gross domestic product People who move back around the name. Yeah, and um right now as this is the this is screenshot from You know one of the various news sources. It looks like they're closer. So today Lady and I were at the youth bs depot and we're like, hey What do you think's gonna happen and and dude said I think it's gonna happen And I said, well, we're ready and he said, well, I'm not so we'll we'll see we'll see what comes out of this There's a bunch of things that the ups Workers and their union representative want and there's things that ups Organization needs to do or has to I will say there's just one little sliver that I'm just gonna talk about this because this could turn into a content Just saying one of the things that the ups drivers are saying is they don't want surveillance cameras inside the trucks I actually agree with that because we've talked with our team about how we want to run ate a fruit in the culture We want to have and it it seems to me like if the ups drivers Um, they you know, there's dash cams or all this other stuff But a camera just focused on them specifically either you trust your workers and they're working and This is something there's metrics that make sense that you're measuring It seems a little weird to have a permanent camera Especially because we all know what's going to happen. It's going to have AI stuff. It's going to have like you're not, you know You you didn't move enough or you you move too much or something It seems it seems intrusive and I think that's one of the things and I don't think That people should have a camera on them at all times. It's just it's just maybe I'm wrong Um, but ate fruit is a company too. We don't have surveillance cameras on our team We don't do key loggers We don't there's a lot of things that when you look at how we do stuff We're just like to get trust to give trust So we just decided to go that way and I'll tell you from a company that's 150 people ish over the course of years I don't think we have as many problems that other companies do because we we trust one another and we hire good and we Listen to people I understand there might be some safety reasons But probably not for ups putting a surveillance camera directly on the person I'm talking about like dash cams and other stuff talking about the inside of just on the person the driver themselves So I I hope that's it that's something that they could negotiate and just say maybe there's a compromise If it's if it's about theft of like some, you know, the outside of the truck or the things that's one thing But whether I understand this is it's very specific. So anyways, I think that would be good to reconsider If that's one of the sources of contention Um, it's my opinion. Um, next up on desk of lady aida, which we do every single Sunday, um, we have uh two parts part one. Um, you show a bunch of stuff you've been working on. Okay, uh first off It's America Uh second, um, I made the matrix portal s3 and I talked about that so that's a you know an update to the matrix portal m4 Sam g51 chips are unavailable for at least another year I am kind of tired of getting some not getting some so Trying to redesign a lot of our products that use the sam b51 so the matrix portal is first up Getting replaced with a esp 32 s3 Which is a more than capable chip. I should have at least the same capability. It also adds bluetooth low energy Um, it has two cores. So it'll do great. It has wi-fi Um, and we went through and make sure that all of our circuit python and arduino demos still work And then I also have a cutie pie audio board that I showed off That adds micro sd card plus i2s amplifier and also, um, this Metro rp 2040 prototype which is getting close to being finished. They do the great search This is when ladies are proud of engineering. I hope you find things on digikey.com What did you help people find this week? um So the metro rp 2040 one of the reasons I like the metro layout is it has dc jack support So you can plug in a wall adapter and yes usb c pd is slowly slowly slowly replacing that But for at least another decade, there's going to be dc jacks that give you, you know, nine 12 volt power Um, and sometimes you need, you know, a lot of current, you know, a lot of voltage And you don't want a usb power delivery thing you want a you know, a plug that does the job So, um, these plugs are common and available on digikey and I go through s and t versus through a hole Thin pin versus thick pin 2.5 versus 2.1 millimeter inner diameter um different things to look for different ratings And what to watch out for with that internal switch that is often misused. So Check it out. You might also learn about Guitar pedals and why they are center negative. Okay. And then also part of our live shows that we do Tim was on our show until this evening and you can see All about the interns of circuit python and more on deep dive with tim each week We did do our show until right before this. It's an epic long show. So, um, do watch the entire thing we had I don't have a favorite, but I I really did like, uh Mousesyn because we got a musical guest play uh play us out. So if you want to check out some interesting people might have a houseband We had a mouseband. We had a mouseband. Um, so so do check that out That was part of the the show until that we did this week. Um, let's do some python on hardware news Um, the first part of this is don't forget to subscribe to the newsletter. Um, catney's guest editing Along with the report to catney policy. Yeah, and um this week circuit python a2o release candidate one Um, you can check out the changes and more. There's an enhancement synth.io and rp20 alarm sleep memory. Um, Of course about fixes. Yeah There's a cool interview with uh, phil howard who did who did the bluetooth Micro python stuff check that out. Um, and then some of the folks that were in the show until uh, we have some highlights You can check out this continuous cap touch controller circuit and yeah, and then uh, lots of python projects Of course and more but this week the thing that I wanted to ask you about legata because we're working on this Is uh, something that was in haxter. Hey, look, I know that that baby arm that's working Um, haxter covered this. This is one of the things that we've been working on for a while It's what we think the first python powered Uh, baby toy also You can do lots of neat things with it. So I was going to ask you let's go to the overhead Um, this is our board right here. Yeah, so this is the this is a well known Kind of infant toy that'll a lot of people I've seen this is the uh, maybe even This is the baby einstein, um, you know Take a long tunes So we have the board off and we're gonna this is a coming soon product this so we took the the the pcb out of it and we have a replacement so i'm gonna turn it on and um This runs circuit python, but it does a couple interesting things There's a there's wi-fi and webflow and then there's sd cards. Um, when you press the button, so normally this would be a part of the Stealed up and be part of the toy itself and everything. Um, but when you press this That's playing off the internal memory Yeah, and then we have our own custom lights that you can program on circuit python stuff and then, um let me uh So I don't know if you can hear that because the audio you might not be able to hear this because everybody But this is the kid version of nine-inch nails hurt hurt And somebody makes these I think it's like so one of the biggest Complaints or like comments about these type of things is like, oh the the songs are repetitive I'd really like to be able to change them, but they're And they're always like baby toys school music. Yeah So there's there's two things on one place music and then the other thing is there's a there's a wi-fi capability So once it's sealed up, so how does this work and why it's python on hardware the right choice for this? Um instead of other or a choice for this instead of other things Well, I mean python's definitely the fastest way and it's also the most user friendly. I think to modify it And we have wi-fi workflows So once you set it up to connect to your internet You can log into it and like easily type stuff and like change the Lighting and um, you know what the button does and how it acts. So it's it's mostly about a speed of integration um And also again, like native wi-fi workflow means that you can you know edit and change the files Something that if you're using something like arduino or zephyr or whatever You can do over the air programming But you can only change like all the firmware at once you can't edit the file like you can't drag and drop files easily You'd have to do a lot of work to to get that kind of functionality going but it's built into circuit pipeline so that's kind of nice and also Playing audio and doing audio mixer support with i2s is like built in so that's also super easy It's like you just Import you know audio core and you're ready to go and the epics of support you can have animation So basically everything was just ready to go. It made it really easy I could you know the hardware was hard, but doing the software only took Yeah, so I think this is going to be a neat reference platform. We're not getting into the baby toy business But it's a neat reference platform for people who want to do audio They want to have things light up And they want to have the interaction only be maybe with a phone or not computer or have it over wireless in some way and with components and things that are available understandable Um storage that you can upgrade over time if needed and then it runs off batteries and you're working on low power mode Yeah, the little stuff is next up. I mean it's got I fixed the power supply. So now it runs off of doubly batteries or usb worth before it wasn't working off the batteries very well Um, so the next thing is is you know, figuring out how I want to do light sleep in deep sleep mode So probably it'll do light sleep for Um, you know two minutes. So it's like if you press the button it'll it'll immediately start playing but if you, um You know don't um Don't do anything with it If you you know, stop playing audio and you press the button In like two minutes it'll go into a deep sleep mode and that way you don't have to remember to turn it off Because we left it on and that figured the batteries Yeah, so I thought this would be like a really good real world example of like we say python on hardware Like well, what can you actually do with all this stuff and putting these things together is really hard? Yeah, this is why you know kind of the joke that Lady and I talked about this so over 15 years ago, maybe when make started every I don't know a month or so We'd get an email at make I was there at this as a senior editor like oh, I'm gonna have a kid soon I'm gonna totally hack baby toys and like do all this stuff. No never does It's really hard if you don't have because you're busy with kids and stuff like um And there is really no no way to do this as certainly not that a that a mere mortal could do So now you know almost two decades later It seems like all the pieces are together now. So we think this will be cool reference board We'll talk about this in the product section because it's going to be a coming soon um Future product designer Could be for classes. We don't want to do injection molding or anything like that We wanted to have that's fit into something that people could get and then when I kind of pulled informally Everyone has one of these. Yeah, they're everywhere. They're back. So they're very Yeah, I was talking to someone who's doing a guide with us. They're like, I have two I don't even know where they came from Um, so that's this week's python on hardware some real world examples Don't forget to sign up for the newsletter delivered every single week Ada for daily.com is where you do it. It is our spam free resource for all things Python and other newsletters that we have as well. Let's do some Up as our hardware news Lady Ada We've got some open source hardware that we do Here every single week. But first Um, you are on blue sky. Congratulations. You're on threads too. Amazing. Yeah, and you're on mast on and you're You're in all these places So, uh, blue sky lady Ada got an invite and there is this cool tool that you can use to make feeds your own feed So if you're on blue sky, look for it a little more and you can just look at Ada for Uh, if you search for Ada for In the way it works is you, uh Anybody who says open source hardware? Open dash source hardware or the combinations open source hardware. It's a feed. So you could see that filter feed Yeah, you can see that. So anyways, that's one that's provided for everyone. Um, we took a look at it and we're like, okay Let's try to do this. So if we've got that going on, there's other feeds that people have made There's one for like the alf Character from the 80s that can't anyways So to check that out, uh, we're trying to make a resource in some of these social media places because it seems like Um, it just turns into people being mean to each other So maybe if there's something for people to do like look at hardware or share hardware Maybe they won't be so terrible to one another all the time. Uh, probably not. Okay, uh, we have some, uh guides lady Ada What are the new ones, uh, this week and okay this week? Um, we've got new guides, uh, this week are From non Pedro. They're back from vacation holiday and being sick. They got the mario magic wands as the first project um using The rp2040 prop maker feather It's all in one. So it makes it really easy to do props because you don't need any additional wings or hardware and it's, um Going circuit python. It's wonderful Um, you have a couple updates too. It looks like the blue fruit sniffer guy got an update and the Um circuit python libraries on moonakes and raspberry pi Also got update dan and carter kind of we wrote the intro section and then liz did a fun hack She picked up one of these ikea vink Vindricking ding hack. Uh, sorry the ikea vindrick drink. Sorry. I can't say it. I can't see it And she hacked it with a cutie pie esp32 s3 Um to make it work with adafruit ios It has a built-in air quality sensor and the original one just had the leds tell you like red green Or red yellow or green depending on the air quality This one will also let you log and send that data to adafruit.io, which is a free um internet IoT data logging service that we have and it's also a great way to Keep track of history and then she also added a page on how to get it to send you an sms a text message When the air quality isn't good. So, you know, you can put this You know out of the waste you're not looking at it all the time But it will let you know when the air quality in your room or your house has gotten kind of icky because maybe there's world fires Okay, thems our open source Guides hardware and more for the week and don't forget to check whatever social media is out there We usually have our presence there and we usually try to put things there that aren't um to harm others with and getting angry about this one's good It's like you can you know make a magic wand for your cosplay. Yeah, yeah, it's a speed up since last time You can hack the Vindrick ting ting Here is some factory footage I made that video for first july and I only got to use it once I wanted to use it in this tip That's our factory fridge for the week. Yay. Let's do some um pretty printing No, we're gonna show the project of the week the magic wand And also a speed up and then we'll see you on the other side You can build a magic wand inspired pop with Adafruit's new art b2040 prop maker feather We designed and 3d printed a magic wand inspired by the super mario brothers movie It's got motion activated lights and sounds with a spinning crystal gem This new feather is an all-in-one dev board that features an i2s amp accelerometer neopixel driver Servo header pins stem a qt and screw block terminals It's got the art b2040 chip with eight megabytes of spy flash 21 gpio pins and light boat battery charging over usbc With circuit python the board acts like a usb drive so you can easily customize the code with just about any computer You can modify the code to fit your project Just change the values such as the neopixel color speed or the accelerometers threshold We think circuit python is the best platform for creating advanced props with motion activated lights and sounds Get the parts to build your projects from the Adafruit shop links are in the description Download and 3d print the parts in your favorite filament. The crystal gem is printed in a white colored filament for nice and even diffusion Screw block terminals make it easy to connect neopixels speakers buttons and switches Mounding holes allow you to securely embed the board directly to your projects It's easy to plug and play servos with jumper cables to the prop makers onboard header pins To learn how to build this project head over to the learn guide for full step-by-step tutorial We hope this inspires you to check out the new Adafruit art b2040 prop maker feather for your next project And don't forget to care it is since he let's jump right into ion mpi this week I brought you by did you key this week? It's silicon labs lady. Ada. What is the new product introduction this week? I'm glad you asked. Yes. This week is from silicon labs, which I call psi labs Even though I know that's not technically their name, but I'll try to remember to say silicon labs um, so this week's uh, ion mpi is on Okay, we're gonna go ahead. Uh for the um silicon labs EFR 32 mg 24 Dev board, but also the chips. Uh, this is an adorable little dev kit. That's under 40 bucks And is a great way to get started with their chipset. It has a debug interface as well as you can see Uh stem iqt slash quick sensors a micro bus compatible gp ioport. That's also, you know point one inch spacing for easy connectivity um, it's a buttons and of course the efr 32 mg 24 chip which can be used to do uh, which is a cortex m33 that also has a radio in it That can do stuff like zig b and also, uh used with matter Um, this is a series of chips that's used in that dev kit So we're going to kind of talk about both uh because if you get the dev kit, it's probably because you want to Um integrate this chip into your design So, um as mentioned, this is a cortex uh m 33 In the at 78 megahertz. I think it's up to 1.5 megabytes of flash and up to 256 k of memory I think like the smallest is maybe Half a k of flash Half a mega flash And uh half 128 k of ram But also it's got a ton of peripherals. Um, one thing that silicon labs is famous for is their Crossbar, which allows you to kind of connect any peripheral any pin. They've got um lots of timers and uh adc and Low power mode. They're very good at the low power integration and of course the built-in radio Which is kind of what you're here for, you know, you can get all sorts of cortex m 33s But it's not really common to get one that has a 2.4 gigahertz radio in it and silicon lab is also excellent at their radio stacks. So, um, you know, you could use this just for playing zig b But in specific, uh, or you know, be a lea looks like they actually have support for that as well, which is kind of cool um, but what I think they're really pushing for the chip to be used for is not just zig b or maybe be a lead but specifically to be used with matter, which is a kind of new and New standard way for internet of things home devices to connect. Um, so you can check out here's all the mc peripherals Uh, we won't talk about those, you know, you can see them and of course the the low power modes you can get under Uh, 33 micro amps in an active sleep mode Up to down to 1.3 micro amps in a deep sleep. So that's really really low much lower than other cortex chips that we know or even tensile the chips so matter which, uh, is a new high level application layer for wireless protocols that want to connect to stuff in the home or in the office um, it's from the connectivity Okay standards association. I think is the name the csa. It used to be the zig b alliance and um, zig b, you know, you're probably aware that they were used for stuff like uh, philips hue lights um, and other home automation sensors and control boards for home or office automation zig b is a very common protocol because it's extremely low cost sorry a transport because it's extremely low cost very simple Uses 2.4 gigahertz, which is, you know, free to use band Um, yeah antennas are easy to get chipsets are easy to get Um, you can go into low power. You don't have the thing with wi-fi We have to have an access point of password. You know, it's usually done by our ssi location or um, you know, you're pressing a button on something so you know that you have to synchronize Problem is is that everybody had their own um Sorry, I'm talking to uh, no, stay back there. Um, everybody had their own um zig b or other low level um protocol Application level on top of zig b that would make it not work. So for example, your hue lights would not necessarily work with any other Um controllers or light systems that you'd have in your home. So every time you bought something you'd have like these little um, siloed Platforms and integrations that wouldn't mesh together Unintended so the idea behind matter is that You would be able to interoperate with any device and controller inside the home So you won't have to sort of start from scratch with creating custom gateways um And custom applications and protocols for each little device You can have a temperature sensor and it'll work with everything that already exists in the matter ecosystem Um, and this is useful because so much stuff in iot has different transports. So for example, uh, you might have um, you know an air pod That or home pod that uses wi-fi and you might have At, you know, a facebook portal and that connects over ethernet You might have stuff that connects over bluetooth or cellular or zig b or z-wave Or even laura or 4.4 33 megahertz bands all these transports usually not only are they of course you can't have Bluetooth connected to the cellular without having a gateway But also the application layers above them would be customized. So if you look at um, it was often called the the seven layer osi model The transport layer four and below, you know, that's what is ethernet wi-fi zig b whatever But then everything above that layers five six and seven would also be custom and that's what matter is trying to replace So don't think of matter as something that is inexorably tied to zig b if you're Creating something with this tylapse chipset that uses 2.4 gigahertz The goal is that it would be able to interoperate with devices that are using z-wave or bluetooth or cellular or wi-fi Because they would share that upper three layers Um and speaking of layers don't forget Seven layer burrito also another another example of seven layers So this is we're talking about sour cream and above here. All right matter um So, uh, and this is a nice diagram from google, you know and speaking of google This is one of the nice things about if you decide to go with matter Is that no matter your protocol or your hardware? google apple Sorry google slash nest apple and amazon are all basically agreed all their stuff is going to work with matter and so you can Have your little device work with these, you know, very large companies You don't have to worry about like oh, are they going to change something in the protocol that will push me out? Or do I have to Pay them a licensing fee and you might have to pay a license fee to matter But you won't have to pay a figure developed for each individual um home pod slash nest cam slash um, you know facebook display slash alexa um So the interoperability is what you're going to get of course the ads your layers of I would say complexity but of Abstraction so you do need to have a fairly good chip because there's security layers on top of this And the application layers and you have to have it of course fit well within Um, the matter framework you can't just kind of make up your own thing You really want to use their own sdk. I think that's probably why the mg-25 comes with so much ram and so much flash But it's also really nice because you have a lot of room to add encryption security and Layers of checking and interpretation so that you know, you're not going to have Very basic errors with buffer management. That's that's taking care for you And uh, cylobs has a lot of chips boards and Software stacks and resources for people who want to use matter with their iot devices Honestly, you know, you're starting now. You're probably in a company and you have to create Um a home device and you know now you can't just have to be battery operated with a couple leds It has to connect to the internet. It has to connect to the rest of the devices in somebody's home Um, it has to be controllable from somebody's phone Instead of having, you know, a custom bluetooth app for your bluetooth device If you make it use bluetooth, but Have matter as a application level compatibility You don't have to worry about Having it work with home pods alexa's nests, whatever, you know iphone's androids It'll just magically work sort of like if you want to have a website that website you can write the Website design on a mac, but you can view it on windows or an android or an iphone Um, it is a standard So part of that is that um, and it just seems to be based on ip from tcpip um You get to choose your transport in this case We're talking about zigby, of course, but you can also use, you know wi-fi or ethernet or cellular or whatever Um, so, you know if you need to step up from the throughput rates But also the power rating of zigby. Don't worry. You can always Change the underlying transport and keep that upper layer of matter compatibility Part of that is though you will have to be certified So you can't just throw something into the matter ecosystem and put the matter logo on it and say, okay You know, i'm good to go you have to play nicely with everything else Because there's going to be a lot of devices all talking to each other On whatever transport and whatever gateway and you want to make sure that you behave nicely you don't overwhelm devices you don't bash on their um You know like you don't d-doss the host controllers and you don't interfere with The addressing that you would have for other devices on the same transport And certification is something that you're going to have to go through. Um, that's not surprising though You know if you do bluetooth or zigby you have to get that certified anyways, so you know This is certification. You're probably gonna go with check out. Um There's a white paper from silicon labs on how to certify your devices Of course, if you start with a known sdk and hard work, it can be a lot easier and then there's also digikey and silicon labs. They just had a um webinar that you can view on demand you just register with um, you know the I think it's the um On 24 service and you can view the webinar anytime And of course, there's app engineers at matter ready to help you out Um, another fun fact about the, uh, mg 24 series is um, this Think plus matter from spark fund, which was released could be a really another really nice, uh hardware dev board That's feather wing compatible has also stemma qt port quick port and has the efr 32 chipset and also circuit python support. I will say that circuit python support doesn't have That matter layer yet But if you want to just get started with this chip and learn the peripherals and and how they act and behave um silicon labs did do a circuit python board support package For this chip family, which is kind of nice And then chips are in stock Various sizes of flash memory and pinout Here's one for example. That's in stock. It's about five bucks in quantity And there's a thousand ready to integrate so you don't have to worry about You know chip shortage, you know, you sign up for something and you don't get it for a year or two They're in stock for immediate integration There's also We need to go modules that have passives and antennas pre-tuned for you They're a little more expensive, but you'll definitely get into production much faster And of course, uh, the dev kit in question There's over 250 in stock and under 40 bucks And I think it's a great way to get started because it has the jlink and USB and pinouts and everything ready to go. Uh, so you can plug and play with a lot of hardware Um, lots of sensors are available You know a fruit we have at digikey stopped, you know hundreds of different stem acute sensors and sort of spark fun They have quick sensors. You can go use a quick to grove adapter to get your Whatever iot sensing element you want to have done and then you can work on the matter layer and software using silken labs sdk and in stock 257 at the time of this Viewing i've got to um, and then there's a short video we're gonna play this and we're gonna roll right into all that matter What is matter? Matter enables developers to create devices that connect to experiences and ecosystems of users choice But there's a really important feature in that statement ecosystems as in more than one With multi-admin a foundational feature in matter users can connect matter devices to multiple apps and ecosystems Locally securely and even simultaneously Right now choosing the right iot device can be challenging Users need to take extra effort to determine if a device they want will work with their ecosystem And for those smart home users who have more than one preferred app or ecosystem Family members may have different brand preferences for their smart home mobile or other control touch points Or they may want to share only specific devices with people in their household or those that visit and take care of it To enable this today product developers have to support each other's ecosystem protocols Users have to manage more complicated purchase experiences or with multiple ecosystems Navigate setup and account linking across them where adding a new one is a painstaking process Today sharing devices isn't always possible or it requires sharing more information in devices than users want multi-admin Let's users connect their devices to any matter supporting ecosystem. They want whether that's a single product developers app or multiple smart home platforms Users can control which devices they share with which systems on an individual level And can easily add multiple devices to a new ecosystem to try out new experiences Multi-admin truly delivers on matters promise of user choice and interoperability It lets users choose the brands and devices They love choose the experience and ecosystem they'll work with and know that their smart home will be able to grow with them And the choices they make in the future Matter it's what connects the world Okay, first up i'm coming soon coming soon. It's our my little hacker board Great if you want to design a circuit python powered audio player It has an esp32 s2 module Micro sd card slot stemmy qt port can run off of double a batteries or usb Um, something that we've been hacking on maybe other people want to hack on Definitely not safe for children. Do not be attended. Yeah But uh can be used if you want to make custom audio players It does fit in an enclosure that we have on the hand. That's right. Okay. Thanks. Another coming soon coming soon But really really soon. We're going to have a new esp32 s3 board stemmy qt. This is Um, the esp32 s3 qt with ps ram. We've always had a version that had four megabytes of flash No ps ram. This one has four megabytes of flash and two megabytes of ps ram. So it's like less flash but more ps ram So i'll make it really good for running with circuit python Um, otherwise, it's actually pretty much the same thing. The chip looks identical. It's just has um the more memory bonded inside of it Um, this is coming soon probably later on this week. So sign up and you'll be notified as soon as they're in the shop We finally got a shipment of pico w h's So this is a pico w. You know and love it has the rp20 40 and two megabytes of flash and uh the cy 43 49 i think is the part number Wi-Fi bluetooth classic and bluetooth low energy module. Um, this one has headers pre soldered in so you can plug and play it into breadboards or dev boards or You know extend extension boards or whatever Um, it also kind of works with a standard 40 pin socket, which is a fun way to make it easily removable Um, we also have the pico w's I think in stock, but you know, there's some people who want to have headers Uh, free soldered so that they don't have to do any soldering at all and uh, now we have them in the shop Next up Um to go with the uh esp 32 sorry to go with the pico w h but also we'll work with um other devices that have a jstsh compatible three pin header is uh socket and plug versions of these jstsh Uh connectors, so we don't actually have anything that uses this cable other than um, you know, it plugs into the pico w Or non pico w But non w pico h so you see that the debug port that sticks out If you happen to want to plug into it or there might be the future It'd be some designs that have uh jstsh three pin connector. This would do the job. Um, we use the same color ordering as the pH version of the stemma, but it's kind of like we had to pick something So the pins may not match, you know, ground may not be blocked depending on what you connect to Probably figured we get these in the shop. They might be useful for people who have something with These one millimeter pitch connectors on there. So there's a socket and then we also have the version with plug pins One of each and then like I said, oh, let me go back jstsh compatible one millimeter pitch So looks just like the pH two millimeter pitch, but it's one millimeter much smaller. Okay. We also have a gh 4 I think is the part number um cable this is used on the sense 54 and 55 um And we might have a breakout board that lets you connect to those in the future So we thought we'd have the cable to start It's a totally different character than any of the other jst cables. Yeah This one doesn't latch on it But now we have the cable it's six pins and you can use it to plug into your sen 54 sen 55 We also have an extension cable for PlayStation one and playstation two people might remember this as the port you connect your controller to ostensibly these were used To let you be two meters farther away from your playstation and connect your controller What we use it for is to cut it in half because then you get The socket and plug half which allows you to connect to either playstations and make custom controllers or connect to controllers without cutting the cable in half because You can't get the connectors anymore. Those are they're not made but you can get this extension cord You cut it in half and whoa, you now can turn one product into a Breakout for plug and socket playstation controller ports Okay, so the show tonight besides the lead editor our team Our customers our community everyone who makes this and go is The sht 41 it's not the sht 40 and it's not the sht 45 It's right in the middle not too hot not too cold just right The sht 41 kind of combines the accuracy at You know 20 to 70 degrees 20 to 70 percent relative humidity of the sht 45 but the overall Accuracy of the sht 40 at the upper and lower ends So basically if you're using it in the kind of most common 20 to 70 percent Humidity range you're going to get a really nice Let me click on the back. I have it. I think it's 1.8 Yeah, it's like plus or minus 1.8 degrees Typical accuracy but the max Error accuracy is I think two percent whereas the sht 40 is four or five percent and the sht 40 45 I think is Max two percent so it's kind of like in between it's still very good and For temperature range. It's plus or minus point two degrees centigrade. So You know, it's kind of as inexpensive as the hht 40, but it gets a much better precision closer to the sht 45 That's why we have all three the prices are a little bit like low medium high and the accuracy is also low medium high So Okay, um, like I said before the code is sincey and um, we're going to roll right into top secrets. So here's what's going to happen You have to like rush to get to This massive yeah, so we have a ton of top secret I'm going to just kick it off with some rtk Show a bunch of videos and then show some of the designs that Lady just posted questions Then we'll do questions right after this. So start putting up the discord. So we've got these rtk chips in Really excited about this. So they're uh Neo m8 and m10 modules and new blocks basically new block stuff is back in stock and you can get it So we got some samples Here we go. We're gonna pick it off with some behind the scenes stuff and more that's coming out soon Fairly data. What is this? This is better than ice cream. It's me getting back to a 2020 design and wrapping it up This is the zed f9r. We have three firmware from new blocks. This is a real-time kinematics board So it does high precision gps. Like we're talking about centimeters here Much better than the couple of feet or couple meters of Standard gps for a little bit more expensive though. These are the cool module check out that huge ground plane underneath Actually started this about september uh 2020 and that shield design Um, and it was actually pretty much ready to go at order pcb's and then boom. I couldn't get parts of it now look I have a whole wheel of 10 or cut tape of 10. This is a like, you know 200 bucks a piece So this is like a $2,000 type of components, which is a pretty big deal I also got these cool, um gps modules the m8 q and m10 q from u blocks So they're gonna be u blocks party up in here Fairly data. What is this is a prototype of a diy usb hub? And I sort of uh head her onto it because I want to test it out. It's a four port hub So when you plug in the usb on this side, this gives you four ports. You can see uh, plus data I'm sorry power data plus data minus ground four times before one two three four And then this is a duplicate of the usb host port case You don't want to use a connector and then on the other side. I've got one of these. Um, these are like no You know, there's nothing intelligent about them Usb breakout cables. So this is just from a port to header. There's no usb Chip inside or anything and then I've got like a trinket in here just to test it out And then when I double click this that's green means you're enumerated and then on my computer It shows up as a disk drive. So to start all four ports. So this is gonna go in the shop soon. It's a I think sl 2.1a so it's a usb to four port hub Early dude was this this is america Yeah, happy fourth of july. I'm uh testing out a prototype. This is an iSpy screen so All of our tft displays we basically converted them to use this iSpy connector, which is an 18 pin fpc Which means on the other side of this I can have something like this board for raspberry pi It's kind of hard to see because it's green on green, but this is what the pcb looks like It's got the 2 by 20 connector. So it works with all the raspberry pies and then Uh Phil you helped me design this you're like, let's put two buttons So two tactile switches and then there's a slide switch for like different mode selections You can get what you want and then an iSpy connector and a stem aqt and then on the opposite side Well, there would be a 2 by 20 header, but I haven't uh soldered it on but it plugs into your raspberry pi here And makes it really really easy to like make an animated gift player With different animated gifts. So happy fourth of july Board coming soon to the ate a first shop This is a rp 2040 metro board kind of what it says it is It's a arduino classic shaped board with all the header pins and all that But it has an rp 2040 and all the gpio and a micro sd card That's also hooked up for sdio if you want high speed reading There's a new pixel up to solder in and debug port swd You know all the ports and everything and the last thing I do whenever I make a metro as I check it out with Our capacitive touch screen because it does spi and iSquared C So Works love that for us Um, this is the shield plugged in Onto the board. So now I know all the gpio work could I test it spi works? um iSquared C works the debug port works I plugged into my j-link So all I have to do now and the sd sd card too. I'll do now is do that final silkscreen and order pcbs BAM instrumented Early day noises. This is me testing out My prototype for the audio bff board bff boards are these little micro controller add-on boards that plug into A qt pie or shall break out micro controller to add more capability So we've already made one with a micro sd card And we also made one with an itus amplifier and I've got one that mixes them both together So got micro sd and amplifier which means it's perfect playing audio through this pico blade to up to a three watt speaker So I plug it in I've got a little bit of circuit python code running on this That'll play all the wave files that are on the micro sd card in order and then Some taylor swift going Got some white stripes going on and then Finally the happy song by image and heap So um very good for making audio playing projects very very tiny. It's all in one and it's coming to the ate a fruit shop real soon BAM early day noises This is led sand. Oh a fun demo This is our kind of all-in-one demo for the matrix portal and this is my latest matrix portal board So this is the matrix portal s3 demo So originally we had the matrix portal m4 which had a samd 51 And an esp32 co-processor and then I actually designed an unreleased version of the matrix portal with an s2 But then the s3 came out and the s3 actually has a really cool built-in peripheral that makes driving rgb led Matrices really really fast. This is my prototype not quite silkscreen ready But it's got all the same hardware and same pinout Stomach utin reset button with a couple gpios Neopixels and of course accelerometer, which makes it uh perfect for doing led sand demos It can drive uh, thanks for the 2 megabyte of ps ram kind of a massive number of Panels, I think you probably drive 24 or 26 of these in a row as long as you can power them up Yeah, fairly data was this I am getting to some really old prototypes now. This is a CSI dsi adapter that goes from the 22 pin 0.5 millimeter pitch to the 15 pin One millimeter pitch that's used on the pi zero and the raspberry pi, you know classic style So here I'm just testing out. I have this going to the raspberry pi On the camera port and then this is a like a wide angle spy camera. And then if you go to the Um monitor or one was pi still and you can see that this is working and it can even do some cool Whoa, it's inside the camera. Um, so yeah, so this is working with a nice long cable And now that I know that all the pins are working out So I can design a tester for this and order and put in the food shop Bam Massive and that's just stuff we had time to post and share here So there's even more that we're going to try to get out throughout the week. Uh, what's this work? This is a redesign of our, um, resistive touch lcd shield 2.8 tft With resistive touch originally used the stmp a11 which got discontinued over Covid and part shortages and they kept prompting me to send this chip and they didn't So you changed it around to use a tsc 2007 and I just finally got around to like I've gotten through 350 designs Redesigns and now this one is up next Um, unfortunately, I left the hardest ones for last but that's kind of how it is, huh? And uh, this one had a you know, kind of a fresh redesign Um, but I think it should be good with the tsc 2007. I use iSport C not spi I think it should be okay, but we'll see it also, you know added a stem of qt port and this is coming soon This is on off the fresh area from yeah, these 20 40 clean the rkk stuff was in 2020 is mid 2021 Um, I designed an rp20 40 and an esp 32 s2 or s3 s3 Didn't exist at the time, but um, I would definitely use the s3 now To give blue faithful energy and these are clue boards. So this is like, you know The clueers will use the nr 52 a40 We still have some of those in stock, but all the sensors got discontinued. So well or the price is tripled So I have to do a bit of a redesign on these We do have some list 3 mdls, but I don't only want to use those anymore and the lsm 60s 33 got discontinued We're going to use the lsm 60s 3 tr Instead, which is like pretty much code compatible Um, and the microphone also got discontinued, but we found a pin compatible one Uh, anyways, it's just like a joy Um, and then this is a version, uh, you know, it's kind of interesting. We had to tuck the My hand goes into the antenna. We had to tuck the antenna underneath the Stem IQ t port because, you know, we can't move any of the stuff over there. It's fixed position Uh, and I wanted the antenna to be out, but I think it couldn't rotate it. This was kind of like my best, uh Way of handling that Okay, and then Top secret's going to be t part. Um, because we have a my little hacker segment that we're going to show You know the first glimpse of the project we've been working on for a while You Okay, so before I show this I just have to make it super clear Shawshank Redemption is one of the best movies of all time And the reason why it's one of the best movies of all time is it has a really good positive Uh, because there's not a lot of fictional stories that have positive male romances pirates, but like modified. Yeah Yeah, but it's such a good movie people don't care about the font. Um, but uh, the tim robbins and morgan freeman characters absolutely fantastic One of the best stories buddy stories ever And you just don't see a lot of stories like that. You don't read a lot. You don't see a lot of those So one of the projects I've wanted because steven king isn't doing cocaine anymore Yeah, so one of the projects I've wanted to do for like 10 years is to have a teddy ruck spin Uh, this is an animatronic bear that reads the kids. There was one in the 80s another one came out in 2017 with morgan freeman's voice reading Shawshank Redemption or at least some of the parts from the movie Um, where there's just some beautiful speeches and how things, um, you know happen so, uh If you can get the bear This is gonna be in two parts. So we got it working. We're gonna be posting a code soon You can get these on ebay for like 10 bucks. Yeah, you want like five they used to be like 200 bucks And um, I'm just gonna play the first part that I'll play the video. So this is from the quote I missed my friend andy. It's like this part of the speech. I don't want to run the movie. I haven't seen it Um, but uh, it curses just a little bit So that's not what I that's not the video that I'm gonna put online But you can you can hear a little bit this and if the noise cancelling for the microphones cancel it Don't worry. I'm gonna play a video in a second, but just to show you what it does Came out clean on the other side All right, so we have a beta tester and I'm gonna show I'm gonna show you uh, the video we shot today right after we got this working Hated for the Pacific Those of us who knew him best talked about him often I swear the stuff he pulled Sometimes it makes me sad though Hand to being gone I have to remind myself that some birds aren't meant to be The feathers are just too bright and when they fly away And that's top secret so we'll be posting that code Shortly go to ebay get a titty rex bin bluetooth Or as they'll say titty rex bin ledis Um, they're gonna probably get all bought up off ebay soon because this will be a popular thing. Okay. We're gonna roll right into questions Okay Lady, uh, let's do the questions We're gonna speed around these for you to make sure you get out of here because you have to eat Do you not integrate magnets into wireless charging module like magsace because using manger right now Uh stops charging, but I want to to be flat. It's seamless like magsafe on my phone So how would you use magnets to charge something to a wireless charging module like magsafe? Yeah, you know, I have the little uh phone, you know, yeah, yeah My phone like this can still charge on a bat. So there's magnets on this I guess on a magsafe. I thought is the plug that goes into the side of the mac then. Um, I think they're I think there is it's either yes or similar But you know, but there is a magnetic backing for these things to go on Is it how do you integrate magnets to a wireless charging module like magsafe because using a magnet right now on a charging module Makes it interfere with the magnetic field and stops charging Well, yeah, it's uses, you know, there is a There's a magnetic There's a field that that's how it charges. So I think you have to have the magnet Outside of it, but it can't be interfering. I feel someone in the discord chat posted a link There might I think there's a reference to to how this is. Yeah, you might have to Read out because it's it uses, uh, you know inductive coupling and a magnet will interfere with it Unless it's in the right location So there's probably a way that you could have multiple small magnets kind of spread out. Maybe that would work and Okay, I've been wondering There's much chips that are customized for this or that wireless protocol has anyone done a simple arm customized for sdr Leaving the if If stage and antenna not to mention software to the application designer Um, there are lots of radio chips like I think the cc 1011 like ti has at the cc series and You know, I've seen these used in sdr like low complexity low frequency sdr's Because you can you can have a lot of control over the chip for both transmit and receive Okay, um, do the rkk modules have more accurate time too? I don't think so. I think that Absolute time is going to be always the same, but you know, I think gfis doesn't promise anything better than um Once a second time precision because rkk uses a different timing protocol to do Um, the triangulation for precision locations like you need to have the you get the overall location um from the satellites and then you use the multiple points for triangulation to do um Centimeter level quality about that so then you reference it against the known absolute location Of one base station and that gives you the accuracy over like the earth Okay, um, do you know if the u-books modules need additional transmitters on the ground for the centimeter accuracy? Or will it do that with the satellites alone? You know, you need you need ground Controlled gps. There's no way to get better than 10 meter or whatever accuracy from gps. It's just not possible You need to have a ground transmitter To use as a reference location and then you can Measure the seven meter distance from that and then like add that to the um generalized distance with 10 meter accuracy to get you like that sub meter accuracy Okay, well, there'll be another ziling fbg in the shop We're now I mean zombies if you think you're still a little hard to get okay We're building a boost circuit is the possibility to limit the current drawout um, usually there's a current limiting on boost converters based on the switch itself But you might want to have a current limiter on the output You can use fuses to do that um Whether or not You can actually limit the overall current, you know, that's actually you use a separate circuit to do current limiting I think you can use a Like a crowbar circuit. So as the current increases, you know, your vbe over some diode increases and that slowly Um reduces the amount of voltage and then the amount of current. So That's how to do an analog. But whether a boost converter has it built in you'd have to You know, either you'd have to pay for a fancy boost converter like linear attack or something Which would do that built in or you add the circuit on the input or output To create the the limitation. Okay for the toy hacking board if the toy is on it runs the battery is very, uh At a very low voltage with esp subject to brown out if the voltage gets too low Is there automatic shut off? Is there any way to read the battery status or would that be a quick board addition? You can read the battery status from a voltage divider And then decide what to do. But uh, you know, it's there's built-in brown out management on the esp 32 That's very common Because you people run off a wipe of batteries that the voltage gets too low. So you can decide what to do I mean the software is You know easily adaptable since circuit python or you can use her to me now Yeah, we think people are going to do a lot of neat things with it because it's a very good Just stand alone like music light thing Um, and this is kind of a reference platform for people who want to build stuff like this and then have like a wi-fi workflow Or have uh expandable storage on it or take the design and turn it into something else So it'll be posted up. We have guide coming the, um, get a repo and everything will be absolutely We put for the softwares up the hardware is enough because I don't think evo did it today Yeah, so it's uh, it'll be ushra certified as well. Um, that's the questions for this week. Okay. Good job speed rounding it lady Thanks so much everybody That's our show for the week this week since he used a code. Please use it by midnight tonight Keep us in business so we could pay for all these, uh teddy bears. I know there's like five billion being now Well, we've taken apart a bunch. So we're going to do some also some internal hardware We have some fun things to do with these. Uh, what I do is I have an ebay watch and I look for them for 10 bucks Uh, plus shipping and they're available because a lot of them have little cosmetic Flaws and no one wants an old teddy bear with cosmetic laws except for me Um, but there's like hundreds of dollars of electronics in there jammed in there or the models are really good I mean the mouth movement. It's whatever they use to move it. It's a very nice design This has been a native fruit production. We'll see everybody next week. Here is the moment Of zener. Thank you everybody. Bye everybody