 Life from York. It's asus engineer. Hey everybody and welcome to ask engineer. It's me Lady Aida the engineer with me mr. Lady Aida on camera control behind the scenes getting everything going I cannot do it without him again exciting show for you tonight so much news and updates. It's hot So why don't you just stay inside get yourself an ice-cold glass of water or other favorite beverage and hang out with us for the Next 55 minutes or so as we go through all the news in the maker hacker Engineer coder and creative communities that we are part of we've got discounts videos new products and more Mr. Lady Aida, why don't you tell them what's on tonight's show on tonight's show? The code is expander 10% off in a different store all the way up to 11 59 p.m. You use this code get free stuff on the way out save 10% and More we'll be talking about some of our live shows including show and tell we just did a few moments ago Do a little bit of time travel look around the world of makers hackers artists engineers news It's going on and more from the mail bag, which is a slightly Merge combination of chip shortage because we're gonna be talking about that. We got some main New York City factory footage from the advanced manufacturing Factory called a to fruit. We got some 3d printing. We got iron MPI Brought to you by digiki and a to fruit this week is ablic got some new products We got some top secret. We're gonna answer your questions. We do that over in discord a to fruit dot it slash discord please hang out there and Ask your questions here. We get to them at the end of the show discord discord discord Discord is the way because there's five different places the videos going and the chat Can only be in one spot for us to see Join on 35,000 of us. We just hit 35,000 people in the discord It is a fun 24-7 maker hacker space that everyone is welcome to Including this show all that and more on ask an engineer. Okay, so let's pay some bills to fund these skills The code is expander lady and when people check out in the Adafrit store they get free stuff. What do they get? We have all the freebies back We're so excited to be back to our quad freebie selection $99 a more you get a promo proto house size breadboard PCB gold plate with beautiful silk screen design 149 or more. You get a free kb2040. This is a full microcontroller with eight megabytes of flash and tons of RAM Stem aqt Button USB-C. It's cast-related. It's pro micro shaped It's great for any kind of microcontroller programming and you can you get a free with your order and your order from Adafruit 199 or more you get free UPS ground shipping in the Continental United States and Back by popular demand plus we actually got some boards made because we have parts that came in Circuit playground express is back to 99 or more. You get our favorite Low-cost all-in-one development platform The price that has not risen 10% it's the same as before but you also get a free yeah with your order LED sensors and more you can code it in Circuit Python make code code.org Arduino and many other languages. It's a very well-supported chipset and development board Okay, and a reminder make sure you make an account on native fruit calm You verify your email and then you set up two-factor authentication especially if you want to buy a Respirate pie usually Wednesday Thursdays we do a drop of raspberry pies. They're pretty rare. They're pretty scarce right now We only allow one per customer and you have to have an authenticated account That's been keeping away the folks that were buying them and selling them on Places like eBay for like 500 bucks stuff like that. We've managed to turn the tide with that Those folks aren't that happy, but their loss is your gain So we have more raspberry pies that we're able to sell so please do that We do a bunch of live shows Every single week we do live shows We do live shows? Yeah Yeah, we just did the show until and This one was GM packs and make sure you go check it out on any place we publish videos But I I just it's always hard to pick a project, but I think I'm gonna just say the highlight this week is if you want to Get a free Python-powered tablet you got to check out the project a seven inch capacitors. Yeah, we're gonna be giving away some in combination and friendship with came March came H and Joey and That'll be part of circuit by fun day So really neat demos tonight, too You could see like multi-touch on these things and these are basically heading towards the the trash heap But now they have a whole new life and they're running Python circuit Python specifically. So check it out on Sundays we you desk of Lady Aida this week We did something a little bit different because we were showing Well, Lamar's sisters were in town. So we went to a museum. So we we decided just to do the great search So we didn't have the entire time to do all of desk of Lady Aida But we did fulfill our promise to help you find all the things on digikey.com What was the great search this week? Okay, this week's great search was You know, we use the APX 803 and so many of our boards and auto resets power monitor circuit chip It's a wonderful chip, but it's not recommended for new designs and It's out of stock at digikey We have some on order and we're gonna get some but I have to be ready to swap an alternative so we looked for some alternatives and the big challenge is Trying to get something with the same Trigger voltage and also getting something with the same pinout and it's it's tough because a lot of chips They'll click they're compatible, but they actually use a slightly different pinout. So I found two options But you know, if you if you're one of the many people who bases your hardware off of a different hardware You're gonna notice that some of the parts that we've used Traditionally are no longer available because of the chip shortage. Watch this other video to learn how to adapt your design Okay, and then we have JP's product pick of the week That's where we broadcast live from inside the product page. So this week's product pick JP take it away My product pick of the week this week is the minty boost kit version 3 so this is a USB 5 volt source that you can use to charge things like your phone or an iPod or your zoom player or who knows what Using just some common double-a batteries. You get the custom PCB You get the the boost converter that takes your battery power Whatever it is 2 3 volts and boosts it up to 5 volts. We have some capacitors a Inductor coil a couple small caps and some resistors in a diode these resistors are used to Let an Apple device in particular know that it's okay to charge plug this in and you watch the Charge up there at the top when I plug that in you can see it is now charging. So even though this is a super modern device It is able to charge from the minty boost. No problem. It is the minty boost kit version 3 Okay, and don't forget on Thursday there is JP's workshop. You can check that out tomorrow and then during that time we have the Circuit Python parsec with JP and you'll be able to learn a little bit more about circuit Python including some of the projects that you probably saw on the socials Friday, we have deep dive with Tim. This is where you can see the innards of circuit pythons. This is Friday's at 2 Pacific 5 p.m. Eastern and with the current Promotions that we're doing around circuit Python day by promotions. I mean just like hey come by circuit Python day you'll be able to Probably if you're lucky get one of these circuit Python powered tablets. So check out Tim's free show this this week at Friday Because that's one more information about that. All right time travel a Little bit of reminder For time travel we usually talk about eight a box. We're still trying to ship them in August We had originally wanted to ship our winter one in winter But then winter turned into spring and then spring turned into summer and summer is now and it's hot out It's hot and it's technically a heat wave in New York right now because it's three days in a row of over 90 degrees Yeah, and it looks like it's a scorcher. Stay cool everybody. Yeah, so We're gonna continue to try to get this eight a box out We Well, I'll talk about some of the chip shortage stuff soon We're making headway in it, but this is a you know problem that everyone's going through So thank you everyone who's been a patient and understanding You know, especially if you're like, hey, I really want an eight a box We really want to ship these eight of boxes as well. So speaking of Okay, so this week's a little bit different. So we don't have a chip shortage video Or a segment this week. So we're I'm just gonna read. I thought this was kind of funny so in the news of course and all the Places like hacker news and slash dot and like other places People are kids don't know what slash dot is. Yeah, some of them. Yeah, you know, it's probably good They know I this is just a pull quote from people are saying Oh, you know all these engineers are freaking out and the world's melting down and there's no chips But we were kind of singled out and they said it's gotten so bad that influencer using cloud to beg for chips And then they linked to our right our part shortage Series and it works Well, I thought there was a couple things that were interesting one. You've been reduced down to being an influencer and Would it be great if like all these like YouTube and snapchat influencers were begging for computer chips are actually not They're doing other stuff. It's just us, but you know We don't really have clout. We just accurately described what's going on and That being said we do beg for chips And we're getting some chips in but we do like to talk about what's going on and I think sometimes when you see People say hey, you know, you're you're doing this and you're doing that It's because they can't imagine having to do this You know every single day we work a lot and I spent like two hours a day on chip shortage stuff I'm just trying to find alternatives and redesigning boards and it's like pretty exciting and I'm also a little tired of it I think it's funny, you know, it is it's funny to be like dunked on like oh look at these like influencers using your cloud to beg for chips But we have a big mission and that's to get electronics and learning out to a lot of people and so no stone shall be Unturned we will do everything and I think it's important to Look back in time one day and say well What was happening during that chip shortage when we can point to each one of these videos and we could say here's what we ordered Here's how long it took And this is genuine. This is the real thing. This isn't you know, we're not newscasters. We're Right before the show No, we're real people that we work in the electronics factory and you know, we get asked all the time To quotes for the press and you know, they don't use them Often because we're I think we're just gritty boring people that are really doing this for a living and so we don't have really any other advantages other than being as transparent and showing everything in real time for all of you so Influencer using their clouds to beg for tips, so we'll have another chip shortage video successfully But one of the things that folks said was yeah That video series is really neat that song is stuck in my head and so I'm gonna play it Yeah, if you think that song stuck in your head, that's our life. All right, so let's do some Python on hardware Okay, it is Python on hardware time There's a lot going on in the world of circuit Python, so I'm gonna start off with that Next month August 19th. We are once again celebrating circuit Python day. We have an entire Day's worth of activity. It's Friday August 19th. We'll have stuff going on all during the day. We'll have show and tells well giveaways It's tuned into all of the shows between now and then and you'll get a chance to probably win one of those circuit Python tablets And then we have a full day of folks who are just doing cool stuff with Python on hardware And so that'll be our circuit Python day coming up The sort of big news I think anyways because this is always interesting This is a lead story in a newsletter the pi 5 risk 5 a 6 project and this is an open-source hardware chip and They're making a community drip Well, they're where they're describing as a community driven risk 5 base microcontroller with the ability to easily support circuit Python a micro Python so Lady to you know a little bit about these things. Why is this interesting? And is this the future of chip development? It could be this is interesting because Well, it's interesting for two reasons one risk 5 is a microcontroller architecture that has got a lot of attention lately because It's starting to be picked up by big in industry partners like Western Digital Is you know makes chips with risk 5 and high 5 does as well a couple other companies expressive ESP and there's some a bunch of other chip companies that are making risk 5 cores and especially pairing them with machine learning and AI stuff and you know usually with Free cores people do stuff like in 8051 Which is an AP and my controller or maybe you get expanded to 16 But the risk 5 is like a true like complete risk architecture chip. It's 32-bit. It's quite advanced It's got a full instruction set and it's completely free No royalties required unlike the arm cortex series and so, you know, even though the RP 2040 isn't like explicitly designed for use with Circuit Python Micro Python There's a lot of design decisions. They made that do make it a really great Embedded Python chip and so it's interesting to see, you know, that's a dual core cortex M zero It's interesting to see can we make true fully open source hardware that can run Interpreted languages and you know, I think people have Come up with Theoretical designs for the risk 5 but I think they're actually going to try to Manufacturing chip a chip that is is specifically designed for I mean Of course, they'll be able to run other languages, but designed for running high-level languages Using a fully open source from top to bottom theoretically this could be one of the first truly open source hardware like Laptops, I mean remember, you know like back in the day there is trans meta and like there was a lot of things for the old timers But this is an open source hardware chip it could run open source software like circuit Python and it's an interpreted language like Python and the full stack from Hardware to software could be open source. Yeah, I think it's very interesting I mean the tough part is the peripherals But you know if they've got the time and you can't get chips you might as well sit down and do them It could be really it could be very neat. I think I think it's interesting that they're deciding, you know Let's let's try to support Micro-python or circuit Python. I know that there's I think the FOMU is an FPGA that supports That one's a with five core that runs Python. So it could be I mean, it's the so I don't remember They're very similar we named But I think this is really neat. So I check it out. I think they're doing some fundraising right now. All right So you can check it out on group gets and also you can watch the progress on Haxter Banana for scale. We're Raspberry Pi staff made some RP2040 lightsabers. They use feather wing circuit Python some 3d printing We have some pico add-ons. We're calling those bells. If you saw our video last week We debuted cowbells And you could see some of the logos and a little bit of the story behind it. You just saw we've got cowbells There's more cowbell. I Got a fever that only be cured by some more Raspberry Pi pico pie bells and you can check out the rest of the newsletter With a gigantic massive amount of projects one of the bits of Kudos we got that someone said is they called us a fair broker because we celebrate and have all Types of Python on hardware not just circuit Python not just micro Python not just desktop Python But whatever people are putting Python on And there's you know a few different ways to do that on devices and we you know, we've written about this before But all the projects so if you're doing something micro Python, okay You're doing circuit Python. It's fine if you're doing some neat thing on desktop that has some type of interaction with hardware Throw it in send it over to us. We deliver this newsletter Every single week into your inbox You can also always check it out on the website if you don't want to subscribe and that's over on a different daily comms completely Separate site because we don't like to mix up things like your store account and then stuff that you just want to read So we decided to make a whole separate site a different daily comm and that's just for newsletters We don't spam. We don't market. We don't harvest any emails anywhere anytime, but we want to go above and beyond and show that Okay, we're an open-source hardware company and one of the things that we like to do is we Really like tiny hot plates now one of the things that we like to do is support other open-source projects and developers and so We have a guide on our website, which is kind of cool and this guide It says and but and got the content from the folks that are working on the iron OS Firmware, it's this open-source firmware that you can install on a mini hot plate And if you're wondering how many the mini hot plate is that's how small it is and so What we said was hey like do you want to do a guide around this and can we pay you for it? Because we saw people putting this custom firmware on these soldering irons and then also these hot plates and they said yeah and They said hey can you help support this project? so we donated directly to the developer and The reason I'm putting this in the notes and everything is doesn't matter if you just donate 10 bucks or 5 bucks Or let's say you came in for that email the developers and say hey, thanks. I use this open source I really appreciate it because they don't usually get emails like that. They usually get pushy emails Demanding people are being mean. They're saying oh like I need you to support this. I have this other thing Why won't you just why won't you just and I've never been treated like this before after being a jerk and demanding things so you know, it's really hard to put your heart and soul into code and open source and not get a lot of Watering of the flowers is the best way I can describe it and do not step on flower Yeah, and and if we want to see more open source and we want to see more cool projects At least send an email, but if you can just you know get up sponsors is available now But this is a really cool project and people are able to do more stuff. So The thing that we can do is one support The developers behind it but the other thing we could do is tell all of you about it and then you could tell other people about it and Then you could say hey you like I noticed you do that you like that open source project Or if like if it's comments online or if it's on Twitter. Oh cool use that open source project Hey, here's a link to the Developer page where they're looking for support, you know, you don't have to dunk them shame them say like oh How dare you don't support anybody because I don't think that works Not well. I think it's like hey Here's a way to support them because it sounds like you like that and you can get and you can see more things like that in the World so anyways, that's why I wanted to put it in here this week. Okay more open source hardware This is kind of cool. Lady. There is this another yet another site where you put in a person's Username and it builds a city of their github. Oh fun. So this is yours. So this is the year so far Yeah, and it's github city and you put and you put in your you put in your username And then it starts to build a 3d model of all your pull requests. Yeah and contributions Yeah, and that's Lady Aida city. Oh, I like that. We have a little like air population. Yeah. Yeah, like Air power mountain. Yeah, there's a beach. All right Aida for bill that was from the chat. Okay, and then you know four requests built this town. I don't know Yeah, and to prove we are an open source company Not only do we have the open source software the hardware But we have tiny heads that we scratch the screen your head. Yes. So this week's guides. We have a lot of fun stuff Take it away Lady Aida from the big board. Okay, so oh my goodness. What do we do? Okay, so the ESP 32 s3 feather guide got a whipper snapper quick start page. So check that out We've been Catney's been helping out Brandt. We're adding that to all of our ESP boards Don't forget if you have a board that uses the ESP 32 C3 s2 s3 or the original or the 80 266 Whipper snapper can support it and you can submit a pull request to a Jason file that defines all the pins And the name and an image and stuff and we can support your board as well The mcp 9808 precision I squared C temperature guide also got a whipper snapper starting page We're trying to add some quick start pages We have a lot of people who don't realize that we have a no-code way for people to do data logging And our IoT service and since so many boards these days come with built-in Wi-Fi, you know, especially the pico w which we're going to work on adding next It's really great. It's like instead of data logging to an SD card. You just data log to the cloud Which is our computer Next up from known Pedro. We've got the video that goes with this You saw this Hasbro's has a as a system that you pay for to create 3d printed action figure selfies But what if you could do it yourself using the 3d printer you already own that actually looks like no And one other thing about this we mentioned this on show and tell and You'll see this in the video in the 3d printing section But the new Thor movie has Natalie Portman as like a Thor like thing and Pedro was talking about this That I guess a dad and the daughter was in the toy store and they were looking for that that action figure of a You know Thor like ladies or yeah, Lady Thor and it didn't exist might either and so You know if you're especially a younger person and you don't see an action figure like you It's kind of hard to imagine being that hero So I think they're fixing it, you know Hasbro's trying to do this thing with some of the brands and you know Disney's doing stuff and how you know There's a lot of things going on but why wait? You can do this now and if you have a phone you can take photos we show what app to use and Then you can either find someone with 3d printer or go to a makerspace send it off And then you could take that little head and put in the action figure So you can make one of yourself you can make one of that young kid who doesn't see an action figure that kind of looks like Them and then they can become that hero So it's kind of a cool thing So we saw this and we moved pretty fast on it because we're like oh that doesn't exist yet The movie's out, but that doesn't exist so we can make that I thought that was cool. Yeah. All right. What else you got? Next up from Liz. She wrote up a full guide on using the na you 7802 This is our strain gauge amplifier, which can be used for creating DIY scales I thought it'd be cool to make a scale that fits You know an existing Tupperware type thing and it has a nice Seven-segment display the next step is going to be internet defying this to make it Compatible with an online IoT service, so they'll be kind of cool and then you can have like alerts come to you But weighing things is a really common thing for sensing you want to you know If you can't measure how much water is in something you can you know from height Or depth you could maybe weigh the whole thing and it'll tell you how much material is in there So in this case, it's cat kibble. Yeah, okay, and Now it's time for some factory footage. See on the other side and It wouldn't be main York City factory footage without Time-lapse of the Disney speaking of Disney This is the second story now there. Yeah, they're building it's going This is where your Disney plus subscription money goes. Yep, it's building this tower across from made for you. Yep All right 3d printing so we talked about that video That we have yeah, the no Pedro did of the action figures with print your own face on it kids face other person's face the whole idea is be that superhero you want to see in that world and If they don't make one no problem, you can make it so we'll play that and then the speed up and we'll see on the other side Hey, what's up, folks in this project with 3d printing selfie action figures? You can 3d scan your family members to make modified action figures We scanned our heads and added a ball socket so it can snap fit onto existing action figures These are printed and flexible filament and feature painted details like the eyes and hair The built-in ball socket allows for articulation so you can pose your selfie action figures and have fun playing with them These are a hit with the kids and we think these will make a great gift for the whole family Most action figures feature removable parts and feature a ball joint for their heads These aren't standard size so you need to use calipers to measure the diameter of the ball joints We used our phone to capture different angles of our head using the poly camp app for iOS Check out the guide on the aid if you're learning system for a full step-by-step tutorial To capture a good scan you'll want to get photos underneath the chin and the top of the head Your subject will need to remain very still so patience is really important Also avoid wearing glasses hats or anything reflective Once you capture a decent scan you can export an OBJ file and import that into your preferred CAD program We used tinker CAD to create a watertight mesh for 3d printing Importing 3d scans into tinker CAD automatically closes any holes and repairs the mesh We use the primitive cube as a hole to cut away at the model leaving just the head Position your cut right below the chin to avoid having to use support material Our ball socket is made up of two perimitives and joined together. These can be resized to fit the ball joint in your action figure Position it right underneath the neck and combine the objects to create a ready-to-print scan To bring out the details you can paint on features using a dry brushing technique using various pigments A fine pointed brush or toothpick can be used to add on small details like eyebrows and pupils You can also mix different colors to match the character's bodily features We printed several copies so that we could experiment with different pigments and painting techniques We were really surprised how well these turned out with just hobbyist 3d printers We hope this inspires you to try 3d scanning and making your own selfie action figures Thank you so much for watching and be sure to subscribe for more projects from Adafruit And you can make all this stuff or learn how to make all this stuff on 3d hangouts every single Wednesday to 11 a.m Eastern times with no in-page or the longest running at live at 3d printing show on the planet Okay, before we go over to ion MPI lady at a the code is expanded this week 10% off native for store all the way up to 11.59 p.m. Let's do some ion MPI All right this week's ion MPI is from ablick. What do they make? What do they do? What's a new product? I'm glad it's I've never I think it's our first time showing an ablick or stay tuned They get a cool video So this is a Japanese IC company and they make a lot of timer chips low-cost chips RTCs automotive stuff. We've never highlighted their stuff before but I'm excited To show off something which I was actually looking for anyways when I searched on digikey.com slash new Somebody that asked for a chip like this and that just popped up and I was like oh my goodness It's what a good coincidence. I'm gonna show it off. So this is the s sorry s-35 7 10 and 20 series of Ultra low-power timer chips. These are very interesting ICs that are designed specifically To be programmable with different wake-up times And they use an extraordinary low amount of current up as low as point two micro amps or point five micro amps of current The one I'm particular. I'm looking at is the 357 10 series which is that the amount of time it goes to sleep for before it wakes up Is programmable over I squared C which means that you can really set a very wide range of Times from like one second to almost half a year compare that to you know, we've used before like the TPL 511 and 511 0 series Which you have to use a resistor and it's a little tougher to use This timer I see looks very simple and I like that. Of course, it's fully programmable over I squared C Okay, and has a white bullet range. So basically What this is useful for is, you know, if you have You know my controller boards like, you know, the original Arduino Uno Or or other boards that were designed early or they're not designed for low power Because they're using say, you know, 7805 regulator and just the quiescent current on the regulator not even including any of the other LEDs or buttons or chips or whatever is already, you know, six plus milliamps You know, and you want to use this you have your design You want to turn it into a low power design You may not be able to without like hot airing or desoldering components and replacing them It might be actually harder than just adding a separate circuit to do the low power part and Also, you know specifically with especially maker and dev boards They weren't really designed to be used in final products or projects They were kind of meant for prototyping and then you'd go in design your own custom board and you know If low power was important to you you would Pick the more expensive components as necessary But what we're seeing a lot of people are using off the shelf boards like, you know, let's say you're using One of our feather ESP 32's even though the ESP 32 V2 feather here, you know, and that this chip the ESP 32 is a low power chip It can go down as little as you know 170 microamperes, but you might want something lower power than that You know, maybe you do want to get down to that one micro ampere or less Or let's say you're using a dev board that's low-cost available like the pico W with the RP 2040 is You know even in in dormant or sleep mode it uses, you know Let's see the typical current there is about point two milliamps Which again is a lot higher than a few micro amps and you know Historically in this didn't matter as much a lot of people were just happy to power something over USB or DC power But then as people are doing more IOT projects or sensor nodes There is this desire to you know sleep for a few minutes Wake up take a temperature measurement or look for command Send the data over cellular or Wi-Fi and then go back to sleep So, you know this this circuit, you know this this diagram shows specifically for this ablic IC But the overall idea is pretty common and we see this with especially the ESP 32 s Sorry the ESP 32 series where you go into deep sleep for a few minutes then wake up Fetched a to see if something's changed You know activate a sensor or a servo or a motor or whatever But you are not constantly checking your you're taking advantage of being in this ultra deep sleep mode So that's where this chip comes in so this this timer series. I see you know Instead of having your regulator and your microcontroller manage your deep sleep mode And then automatically wake up and you have like you know this core that could be taking I mean this is a low This example here shows a one micro ampere You know an STM 32 or whatever, but even one micro ampere is extremely low for most micro controllers It's it's often tough to get less than With a regulator especially less than like 50 or or even 10 micro amperes But with this chip, you know, you might be able to get under you know 0.3 micro amperes total and You know in this case or even show with an LDL But because this chip runs from two to five volts, you might not even need an LDL I think if you're running off of a lipo battery a couple double a's You can have the timer. I see one directly from your battery power You know basically having almost no current and if your sleep times are very very long if they're you know minutes or or days or hours This will let you off a battery even longer than You know maybe five times as long as you would by using the built-in mic controllers deep sleep So this is the block diagram. So how it works is you do you have to get a crystal? 32 kilohertz crystal came to the X in and X out You power it with VDD and VSS There is the I squared C connection and again, that's how you tell it how long you want the delay to be When you toggle the reset pin, it will start from zero start counting up one per second It has a 24-bit timer When it when the timer matches the counter that you set The int pin goes low and that would enable your regulator or fired interrupt or reset something whatever necessary and then Your mic controller would do whatever it needs to and then when it's ready. It would Toggle that reset pin low and when the reset pin goes low Inter will go up back high. It'll shut down the rest of the circuit and start counting again. So, you know, you you You know, you basically in you trigger that interrupt pin on The set time out and then you wait for the mic controller to tell the chip. Okay. I'm done computing whatever tasks I'm gonna go, you know, put me back to sleep and wake me up in you know, whatever 60 seconds or five days There's also a version of this chip That comes with a crystal built-in So there's two Two packages. There's like the MSOP package, which is low cost about a dollar and then there's the version with a crystal It's a little more expensive because it's got a crystal bonded in But you know, you might want that for convenience. So you don't have to wire up a separate crystal Otherwise the circuitry inside is otherwise identical other than the crystal. This just shows the block diagram for the version The M series version again with crystal built in you can see the quartz crystals just bonded in the package Otherwise, they'll it functions the same There's also another Version of this circuit so the I squared C version of this chip again, you have a 24-bit counter to the 24 seconds is 194 days so you just tell them how many seconds you want it to be in this ultra deep sleep. There's also the 35 720 which has two instead of I squared C has two GPIO and you can just like you can Patch those higher low you see on the bottom right there for one ten thirty or sixty second delays So if you if you don't need very long delays If one of those times is this amount of times is good enough for you You don't have to do the I squared C stuff. I it'll just automatically do it based on whatever the pins are strapped to As mentioned the current consumption is ultra ultra low, you know because there's no micro controller core It's just like a counter basically it gets down to as low as point two micro amperes You know if using a six picofarad load capacitor, you know max is maybe point five micro ampere So so ultra ultra low consumption Nothing's going to beat it and if you're tired of trying to optimize the rest of your circuit You can throw this in for or you're using modules that you can't Change the regulators. You can't change the chips or maybe the chip you want is unavailable because a chip shortage Toss us in and they'll solve your low power problem For I squared C. It's pretty simple. There's basically you can read the time register against this a counter that that counts up over time and Then you've got a matching wake-up time register that you write When those match up the reset occurs. So I like the I squared C version, you know I'll probably just make a breakout with an external crystal But very promising, you know, I love that the TPL series a lot of times people are like I want to make something low-power and I'm and I'm struggling I'm struggling I'm just like, you know what just just add an external timer chip and I'll do everything for you available on to Jackie and It's in stock And right you can actually get it and that's that's one of the challenges with ion imp. Yeah We want to make sure if we're gonna get excited Do you excited everyone excited? To use some of these things in your projects that it's available and special treat. They have a really cool video So we're just gonna play it You can see that coming. Yeah. So, you know, it's funny is there there's a lot of cool companies out there that make amazing Chips and they have amazing marketing like that is like Kind of our style like we have our own album too. So I'm hoping one day Maybe there could be some type of chip of Palooza where all the electronic bands can get together I just like that. They didn't have like the standard like at ablak. We invent the future by innovating the past It's like, okay. We innovate by the innovators for innovating. Okay. Yeah, all right. Let's Make sure folks know the code and then let's do some new products codes expander and you ready lady? No, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no, no. All right So it was a catchy tune. It was good So first up, it's not a new product. It's just a back in stock We got the micro bit bundles micro bit v2 go bundles. We got a shipment of them I think we still have some in stock. We do we do have a limit of five per customer because Educators been waiting for these for a really long time. Let them switch over circuit playgrounds But that's okay. We have these if you want them pick them up next up. Okay. We've got two of these ultra skinny utp cables So, you know, these will work for cat five use with ethernet like a gigabit ethernet or a hundred megabit ethernet but I'd also know people tend to use these RJ 45 connectors for DIY projects when they have to like, you know get eight neopixel signals over from one side to the other and so Want to have these ultra skinny cables, you know, of course the connectors are still kind of chunky But the cables themselves are only three millimeters. And if you're okay with not having, you know, full metal shielding on the cable jacket then These will fit around and curve through your project much more easily. So we have these in both One meter and one foot length. Okay. Next up Next up, I get some old projects with the RS 232 connector on them. We now have an FTDI cable that has USB-C on one end and RS 232 on the other inside is an FTDI FT 232 RL cable plus a level shifter converter Charge pump that will take the five volt signal and convert it to plus minus 10 volts Some lower-cost cables don't give you the full plus or minus They only go from like zero to ten and it'll work sometimes, but this one actually goes from negative at least six to positive at least six It's also using the FTDI chipset, which is extremely reliable and high quality. It's got drivers for every operating system So if you're trying to connect to some old equipment or maybe you just want to get your pump outlet up and running again with your You know M1 MacBook Pro This cable will definitely do the job. I'm gonna tell everyone this is the new Lightning cable from Apple. Yeah, I'm gonna just like I'm gonna. It's called drop lifting. I'm gonna put this in the Apple store Yeah, I just say like we have to get a white one new. Yeah new New lightning cable. Okay. Next up. Okay. Next up by request JP wants to get some good-looking knobs Yeah, so we got some good looking different colors. This is just the top view top So we've got gold is best Cherry red Blue steel Silver Fox is that what we're calling it. Yeah. Yeah, and ate a fruit black So five colors. These are Machined solid chunk anodized aluminum knurled knobs They feel great. They're 20 millimeters while I'll show them on the overhead by 15 millimeters tall They have a set screw if you go to the next image. Yeah, I was gonna say that's kind of like the best part of these Yeah, so the reason that it's great that they have a set screw is that the inside as you go to the Image here the inside is a six millimeter Drilled out core with a set screw, which means that you can use it with rotary encoders or potentiometers Or really anything like that uses a six millimeter shaft, which is kind of standard whether it's D 18 or round shaft and then you just use the set screw to set it So it's kind of a universal potentiometer rotary encoder knob. I mean these are great You know, they're these are sometimes he's been very nice You know guitar pedals or or guitar mods are synthesizers But I think they just are a very high quality knob and I like to have Nice knob sometimes just that finish really makes your project stand out so I can show these on the overhead Yeah, go for it. I'll keep showing these foes into you You get there and you're there Okay, so sorry Okay So, yeah, these are so now you can see the scale because you've got my Fingers human hand So this is like a T18 knob so you can see here the set screw So this fits in, you know, nicely you adjust it the way you want and then this is a two millimeter hex wrench you just crank it down finger tight and then now You've got a nice knob with an indicator This one has a black paint but the rest one are our white paint and they they look really cool And they're beautiful. They're anodized so they're they're durable And they've come in these beautiful jewel tone colors. So thanks JP for recommending them All right the stars show tonight besides you Lady Aida our community our customers our Adafruit team and everyone who helps make this thing go is a New breakout the PCF 8574 so this is a Astemaqt breakout for an iSquared C GPIO expander You know if you've been watching our shows we can't get the MCP 28 I'm sorry 23 oh one seven or eight series GPR expanders. I love them, but they're not available So I thought I'd expand my you know outlook and find some alternatives So the PCF 8574 is a low-cost expander from TI and it's available, which is the most important thing It's got eight pins. You can control it over iSquared C One nice thing about it is it has Three address pins on the back So you can have up to eight of these connected the default addresses oh x 20 hex, but you can have eight so that's like 64 total GPIO It's got stem and qt so it's plug-and-play So it's interesting about this chip I do want to mention because it took me like a few minutes to grok what's going on It's extremely simple. There's drivers like we wrote drivers for Arduino and circuit Python, but honestly It's a such a common expander You're gonna find drivers for almost any platform You basically read and write just eight bits directly to the iSquared C address and there's no specific Direction pins so what you're used to with most IO expanders is you have a direction and then you can also set pull-ups So you have the input and then the input you know could be higher low or the output higher low And then you can add pull-ups as well So this chip doesn't do that instead it actually has two modes So each IO can either be an input with a very weak pull-up about a hundred K or an output that's sinking current and what that means is that It basically can act as a bidirectional IO if you want to be an input you turn it on with that weak pull-up and then you can you know by default it reads high and if the Whatever signal is sent low you read low and If it's floating it reads high So if you have a button for example, I'll show this on the overhead So I have two IOs here because this is actually the most confusing is buttons and LEDs Note that I didn't have a resistor with the LED because I'm just I'm being cheap in and fast here So the button goes between ground and the IO number one You cannot connect a button from an IO pin to high. There's no such thing as the as a pull-down There's only this light built-in pull-up But when I Press this button it can detect that I'm shorting the input to ground And then what it'll do is the code running in Arduino on this QT pie reads that through iSquared C and then writes P7 to be that output low So if you want to read an input you basically have a built-in pull-up light pull-up If you want to drive an LED like something that's really sinking current the LED has to be connected from positive You know the the anode to positive and then Common cathode so you ground the LED to turn it on if you tried to connect this LED from The output pin to ground. There's there's no such thing as sourcing current. You can only sink current It only matters again with an LED You can only connect it from high to the GPIO and not the other way around and a button You can only use that built-in light pull-up if you're using signal like you're using this to trigger a reset pin or You know communicate with another another digital circuit that light pull-up will always you know signal a high voltage and Turning it to an output low will signal low voltage. So as long as the input impedance of whatever digital circuit you connect it to is Greater than a hundred K, which is you know almost everything that does digital circuitry other than very old TTS logic This will work just fine. It's just it's just a bit of a funkiness. You can think of it basically as a Open-drain IO expander that said it works quite well as long as you're just aware of the button and LED Situation you know the way you have to hook them up. It's extremely fast because there's only one register And you know it works with a wide range of voltages and a wide wide range of I squared C frequencies And that's new products Okay, so don't forget the code is expander and we're gonna answer some questions, please go over to discord I've got the ones lined up that you've already put in the chat, but we're gonna do some top secret and then we're gonna go over there, okay? We've got a couple things from top secret. This is from this is from a couple this is from a couple days ago So yeah, I hope you remember them Because you made them. Okay, so this is the TCA 9584 so we already have a breakout for this That doesn't have a stomach uT, but we've had enough people ask us for stomach uT and also I had the idea of Having a logic level shifter so you can connect this to like an UNO and then the clients, you know peripheral I squared T devices could be three volts instead of You know, whatever five volts so I thought that could be kind of useful So it's a little bit basic breakout with the eight qt ports next up Next up like I mentioned the mcp 23 or 1 7 is really hard to get But the sx-1503 which we showed off on a great search a couple weeks ago. It's not hard to get it's available It's also 16 GPIO a couple trade-offs. There's no address selects And there's only one IRQ, but it has a kind of a funky voltage level shifting capability which allows you to when you're doing the IO expansion you can Use it to interface with like as low as 1.8 volts or as high as 5.5 volts and it's 5 volts safe You know, but also again for a lot of people just using it for buttons and LEDs It should it'll work very similar to the mcp 23 or 1 7 So I designed a very similar breakup board almost the same size and that's top secret this week We got more next week. We have a backlog of top secrets. So many you'll see them soon. Okay, so we're gonna go over to Discord just a little reminder. We're up to 35,000 people. Thank you everybody a Lot of people like to share their project and smarts with one another and a cool safe place like our discord a to fruit slash discord, okay, so lady it I have some of the questions lined up So yeah, and then this week I have a thing I think might help you out because some of these questions I'm just reading stuff off the screen so you can you can do this Yeah, so if you want to repeat some of it, I'll get the word out. I'll get the word out But uh technology this is from ISO 213. I have a thermistor You missed out with eight wires to four 24 volts AC to for a ground five volt DC And then the other four wires are paired signal and ground both temperature and humidity How would you go about determining the protocol used on the signal wires? With eight wires to first signal site for ground in DC, so you know the power wires and Then the other four wires are paired signal ground from both the temperature and humidity It's probably 4 to 20 milliamp current which I've actually never really interfaced with But it's called 4 to 20 4-20 and that's probably how it's actually sending like a constant current signal So it's a little bit protected against you know noise in the voltages So it's probably syncing or sourcing that current and then you'll need to use a converter to convert that into a voltage That's just a total guess. You might also just type in your thermistor humostat Part number and see if other people have interfaced with it Okay, this one is a kudos the mag tag deep sleep works so well. It's mind-blowing. Yes, okay Please please please tell me that you'll make a breakout for this s3 5 7 1 0 m timer. Yeah, I did design one. Well, I'll I haven't finished routing it But I did do a quick design for one. Okay. I think it's cool You know, they it's a really interesting cool chip only thing to watch out for is, you know I made it stem a qt But you always need to connect the I scored that we set an interrupt line So it's not like it's you know, you still have to get some more wires not fully You know all in one the other question was yep, you want to break out also a different library for simple code scripting and how about a second breakout that goes to a MOSFET so you can connect and Toggle higher power devices if that if I'm not mistaken the other way is for an interrupt. Yes You could yeah, I can see maybe I can figure out a way to fit that into the PCB Okay, and then for the eight port I squared C expander Says it'd be great for projects like a different IO whippersnapper And then someone said wouldn't the pull-up make it glow faintly. No, it's very weak. Okay, really? I tried it's like it's an ultra ultra weak IO. It's a very interesting weird chip I'm like did you really to save that much money? You couldn't put like another register in but this is how they designed it that said it really does work It doesn't work as long as you're aware of this Weirdness, okay, and then I saw you Had a Pico Metro by Pico Metro. Do we have a github repo for that yet? No, it's that would be it's not out yet. Don't ask There's so much stuff. That's not done. There is a lot you know, it's hard because you work on a design and We can't manufacture it because there's just like one like even if you get 99 parts for it One of the parts is not around so then you have to move on to the next one Well, it's also we have so many you know We have 400 plus products that we've already made and I want to make sure that those are still stocked So it's like it's it's tough because I'm constantly updated like every day every week I'm revising and updating products to make sure that we can continue to stock them and as we're doing this like suppliers are going out of Business or they're just continuing things or they yeah We order something and they say they're gonna ship it and they don't ship it And then like we're waiting for the faint-hearted hardware is getting hard everybody Yeah, the days of just ordering stuff and it shown up next day are over it They may never return But we'll get through it. We thank everybody for supporting us during all this DJ Devon 3 says the mag tech has been running for 32 days now still Still still going strong. Yeah I did design the mag tech to be incredible low power anything that works for 30 or 40 days I don't even work for Interesting is you know the designs that I used to do were not low power because I personally just never cared about low power And it was just like well I'm it's like let's just get the design done and then people started to care a lot about low power stuff Which which I get it's there's more IOT it makes sense And I got you know power monitor and but so you'll see a lot You know and I started just like I'm like, okay I'll just gonna learn how to do it so I made a couple mistakes on the way But I've learned like a lot of tricks on how to do low power stuff So all of like the feathers and watch our shows we actually show people yeah I've I've really revised you know how like as I've anything is as I'm doing border visions because of part shortages I'm like well if I'm in there anyways, I'll get things around and I'll also make it a lower power design Okay Well, that's the questions and that's our show tonight everybody. Thank you so much. We're kind of exhausted We're gonna get out of here, but just a reminder the code is expander Like it's a 10% off in the adford store. Don't forget you get all this free stuff as you check out and And don't forget to authenticate your account special. Thanks to Zay and a fruit slack is running things behind the scenes Thank you Zay. We'll see everybody next week. Thanks for making this a lot of fun and having Something for all of us to look forward to to do each week. So we'll see everybody next week This has been an adford production. Here is your moment of zener. We'll see everybody. Thank you