 live from york it's asking engineer everybody and welcome to ask engineer it's me lady aida the engineer with me mr lady aida on camera control. We're broadcasting live from downtown Manhattan that's where the eight of fruit headquarters is this will read to all of our kidding and manufacturing and video and blogging and coding. And making all the goodies that you love to make your electronic dreams come true the next hour so we're going to check in. What's new what's happening videos python MPI top secrets and more that a fun packed show Mr lady to tell the code and then tell him what we're going to be talking about tonight. On tonight show the code is power BFF 10% off an eight fruit store all the way up to 1.59 p.m. including all the free stuff that you get user to lose it. If we're live but shows we did we just got off the air from show until amazing show until tonight we had. Well we'll talk about it soon from the tiniest things that you can see through a microscope to wearable LEDs there was a lot cool stuff this week from this lady and it will be a little recap in from. The great search and things we show for the weekend time travel some site news some updates made a box and more we got some advanced manufacturing may New York City factory footage. We got a 3D printing speed up for no Pedro we've got some iron MPI this week is brought to you by digikey of course but it's nps will show and share that got some top secret cool little hack that you can do with the memento camera. print some new products and answer your questions we do that on discord it for that I t slash discord discord dot tg slash a different that's where we get all that and more on you guessed it asking an engineer. So code is power BFF lady to type of free stuff to the yeah. Okay we're still giving away freebies when you order from the a to food shop online will you be free stuff $99 more you get a beautiful PCB coaster with a gold logo and four little bumpers. Keep your hot drink or cold drink off your desk to keep it hot or cold and protect your desk 149 or more orders get a free KB 2040 it's a pro micro pinout compatible micro controller board but features the rp 2040 chip. That one's dual cortex and zeros it's got eight megabytes of flash usb see two buttons neopixel stem and QT so it's way for kind of general purpose my control projects but also keyboards. One 99 or more we get free you get free UPS gratifying the contents of the United States is trackable and it's insured and it's UPS. And two 99 or more we're still giving away the circuit playground express our favorite all in one development board that's round and has capacitive touch and. 10 neopixel LEDs and buttons and sensors and it can run Arduino or code or XS discovery or make code or circuit Python. So it's a great way to get started with electronics and learning the code, but you don't need to do any soldering whatsoever it's just out of the box ready to rock. Okay, and all that's available in addition to. Don't forget the code that supports us and open source hardware company. No venture funding loans we're doing this on our own we put everything out on the internet for free. By some electronics that'll keep us going we very much appreciate it. Okay, we do luscious. In our live shows we just got off the air a moment ago we were hosting show until this week Jay from did you key stop by with a really cool robot binary that blows bubbles. I love that. Yeah, it's a robot friend very, very cute, very nice, very interesting robot that you can only see in person in some events. But also you can tune in show and tell and see what she's up to and then Scott showed off some of the latest with circuit Python nine. Yes. And you can watch deep dive this week if you want to see more of that and then JP showed some cool time lapse that you can do with the momentum camera camera hacking. Yeah, so it's a hackable camera Aaron showed off some very cool W LED projects that she's been working on. And then we saw some sun and moon couture fashion show incredible real time updating of clothing that were LEDs. Absolutely amazing. And then we saw an electron and ions an ion microscope electrons can yeah an ion microscope if you want to see a whole punched into a FPGA really close. They can etch graphics on the design and open source board for controlling. These absolutely incredible scopes and yeah and it looked great it was super cool and all written in Python. Yeah, so I'm psyched to see and you know I haven't seen these devices and quite a bit so I'm glad they came back and they're like no I got them all working. Yeah, so show and tell every week some 30pm Eastern time and you never know it's gonna be on the show until this is what it's amazing it's like a mini maker fair it's it's a science fair it's some weeks we get retro stuff sometimes there's books that have been working on things for over a decade there's also kind of the latest if you want to see a preview of what's going to be in your fashion week yeah all those things are in the show and tell so if you have stuff come on by you can watch 10 plus years of show and tell on any places we post videos and give you an idea what's there everybody's welcome come on by yeah on Sunday as we do from the desk of lady it it's in two parts and first part is from lady ages desk what did you show off. Okay, I shot up a bunch of upcoming designs, which you know or that's been cranking through. So I couldn't make for the last couple years because of the part shortages and so all designs are getting you know kind of a fresh scrub and getting back into a look at into the shop maybe so first one was a board based on the LT 4316 is a really interesting chip that does on the fly I squirt see address translation. So you plug like I squirt see in and out and the device will magically appear under a different I squirt see address so make a little breakout for that. And then they made two breakouts for analog switches that are I squirt see controlled one is quad SPST and one is octal SPST I think and then I also did one that's a analog controlled like a digital signal controlled analog switch but can do 12 volts that was by request. All right, and then we do the research. That's what ladies who are powers of engineering to help you find things on did you keep calm leading of what was research this week. Okay, so this week. Because we were talking about analog switches and you know, like I said, we had a request for an analog switch that could be digitally controlled with a pen just like high and low to switch as PDT like between a common and. Normally open normally close, but it had to support 12 volt analog level signals so not five which is what the common. And long switches do like the ice for T ones they showed off but higher voltages and so I showed how to find that on did you key. And we found one and then I showed off the design and also showed some design some chips that wouldn't work because they were TTL sorry they were CMOS level not TTL level. And so I wanted something that could be controlled from a 3.3 volt microcontroller. Okay, and on Thursday is JP workshop you can stop by and see some of the camera stuff that JP is working on and on Friday it might be Scott or to be foamy guy went up to deep dive 2pm Pacific 5pm Eastern and you can tune into learning all about how it goes into this big thing we like to call circle Python. What's the latest with a box, I am glad you asked because we have we have a box update. Yeah, what I did that we would be some else first we were but they're there I get a two for the live show so if you go to a box.com you can see the latest update we've been shipping out batches of a box so we've been able to get back to shipping a box it has been a long, long. Road because of the park shortage there are thousands and thousands and thousands of eight box subscribers so good news though is we don't charge until we ship out their eight box. So when we ship your eight box if there's any issue with payment or the address we will contact you. We got some out at the end of 2023 which is just feels like a couple weeks ago because kind of was and then we got out our batches in January so we are shipping keep an eye on a box.com. We can't tell you your place in it yet just know that we're shipping all these as fast as we can we'll ship them all but be sure to update your address and your credit card payment make sure it's valid. Otherwise, there's going to be delayed a couple more days as you get the notification and didn't go through and update better just do it now if you want to make sure that you get it. So it's happening it's happening it's happening it's happening and thanks for your patience and you know we totally understand some folks are going to say like I don't ever I don't want to wait. I want this great we have so many sign ups that we can't accept any more eight box subscribers until some some people go so we don't want to it's totally okay it's not your things totally okay. Totally fun. No no hard feelings one day we'll be able to expand how many subscribers we have that we are still recovering from you know a couple years of having to redesign everything how many redesigns are up to 637. Yeah, thanks for asking. So yeah, PCB thesis. Should be a thesis. I've redesigned every single board so I don't even know this is not really the same data for you. Yeah word this is a different one. Yeah, so there's some boards for instance we have different suppliers for almost every part. Eight of boxes we have the next few lined up so we should be able to ship on you know our quarterly basis but thank you everyone who's stuck around. You know these are the folks that kind of are into the world of electronics of the understand we don't want to quit doing it. We wanted to keep doing it so that's the latest with a box. Yes. Speaking of if you log into your account by the way. You'll start to notice we have more security features so when you log into your account you will get an email that says hey you've signed into your account. If anything sounds weird about this like you didn't please let us know and here's a bunch of instructions y'all probably use lots of online sites this is a pretty common security feature. You're going to hear about this more and more and more every single week there's another you know five billion login and passwords leaked out malware all that stuff. There's no security issues on it if it's just people use their login and password on multiple sites and then those login and passwords go into the dark web and giant the latest one was called the mother of all breaches nine billion login and passwords and so there's More than a number of people on earth. Yeah, yeah some people they have they have to log in funny it's like so one of the things that we want to do though is if if your account is logged into you should get a notification. So that's what we added just a security feature so when you see it that is what it is we also have a guide with all this on there so you can see it. You can turn off these notifications I don't think you should but if you want to you get and that means you wouldn't get an email but it has good information here's the IP address. Here's the last time it was signed in here's a device that was signed in on so this is all useful things, especially if you know you have an account issue something comes up when you want to know. All the social media sites do this a lot of science course financial company is a good idea you have two factor authentication do all these things it is it is it is what it is can't come fast enough yeah it is what it is. So okay. Another reminder and this is on a different daily though tomorrow, the IOT Internet of Things monthly it's coming out so if you go to a different daily.com and sign up for it, this is the newsletter that the IOT. The IOT team works on we have this go out through it for daily we don't like to have our newsletters on the same site as our stores and that's why we call it a different daily it's completely separate thing because once you sign up for something on a store website they usually spam you and market to you we decided we don't want to do that. If you want to see it for itself and buy it for stuff you know where to go at a fruit.com this is just a newsletter. It's sponsor free it's ad free. It's all the cool things that we see every month in the world of IOT especially things you can make and build. So that is some of our news and updates and more let's use the Python on hardware. Good stuff. Okay, Python on hardware this week if you go to a different daily, you can check out our latest. This is the circuit Python themed newsletter and Python on hardware theme newsletter. Little bit of reminder. Today, this is the last day that you can get your requests in if you want to get things like I want this feature in circuit Python will probably do it. You can go to adafruit.com slash circuit Python 2024 you can email circuit Python 2024 at adafruit.com. There's lots of stuff you can do all the posts we collected here. You can see some of the things that you want to have included IP over USB support. There's a lot of different projects that people have and you can see what's interesting to them. So take a look at them send it in and we'll probably end up doing it for. Do you want to send it to you? We're going to talk about something else this week. What do you want to talk about this week? First off, UBC video is super cool. I think Jepler is going on a small break but we'll be back. But Scott is going to help try to get this merged in. So on the RP2040 right now we're going to work on other boards but the RP2040 you can now have your device look like a webcam and you can draw to it. This is cool because now you can capture images from an RP2040 chip. So you can have a little di webcam but also you could have sensor data that comes in as a graphical display and then you merge that in with something else and you can pipe that video data or grab it or reuse or whatever. I think we can have with Tini USB we've had mouse and keyboard. That's the first thing but then we added MIDI and then we added disk drive and then we added generic HID and other things I can't remember off the top of my head. But other USB devices you can act like but UBC is a standard. We initially thought that you couldn't do this because you needed to have high speed USB. Turns out you don't. You can do it with full speed. It's fast but like circuit Python doesn't have gigantic display context anyway so it's like you know 240 by 320 and it sends it over and you can see at the bottom that image was drawn by circuit Python and piped in. So cool stuff also really good for documentation because now we can screen grab what circuit Python is drawing through the USB interface. Okay, you can check out all the stuff on the newsletter. We had our floppy drive preview Tom's hardware cover to take a look there. Making good drone using Raspberry Pi and Python. Ultimate list of Python YouTube channels. All the things that have something to do with Python and running on hardware. This is that was cool. So I am seeing more and more people use chat GPT for in particular to code in Python. I do it all the time. I'm just like oh man I just need. I'm trying to think like what was that coding. Oh, like you know I'll have like some code from JavaScript. Like there was some internet connectivity code that I found that I had to adapt and it was in JavaScript. I'll be honest. I haven't written JavaScript in like 10 years. So I used chat GPT for and I said hey can you port this to Python for me or Python for me. And it actually did a really really good job and I just had to do a couple tweaks here and there but you know I think people know that these LLMs hallucinate. They're not 100% trustworthy but they can definitely shave a lot of time off of porting work or coding work if you want to like merge things together. So I you know I think it's cool to see people using it and then explain to others like hey here's how to get good results out of these tools so they're not your eternal savior for any coding issue and they're not the worst thing you've ever seen. It's just another tool that you know how if you know how to use it can help you get your projects off the ground faster. All right. And that is Python on hardware this week. Get it from me for daily sent to you spam free you don't even need to sign up you can read on GitHub you can read on it for daily itself. All different ways. Let's do some open source hardware news which includes our guides. So we need a let's pop over to learn dot eight of her dot com. Yes. And we have some new guides what's on the big board. Okay. So they're actually you know you're going to see a bunch of the pie TFT stuff and updated. So we'll mention this and you see the little update they go up updated with their. So Melissa has done an amazing job going through and getting all of our displays for the Raspberry Pi working with Bookworm and the Raspberry Pi five which was not a trivial task she spent like weeks on this. Because all the drivers change and then like the display manager change like you know getting it just kind of working with one thing but getting it all working was like non trivial. So you guys have been updated if you're using Bookworm or the Raspberry Pi five believe us we're going through and we're trying to get every piece of hardware working with it. Not everything like a neopixels is still in progress because of the underlying GPIO change, but TFT is definitely remember. Okay, next up can you click on the memento camera board and then scroll down to circuit Python memento and then scroll scroll scroll scroll. So we've got time lapse. This is unlike we talked about this is from JP he did a guide on using the new time lapse mode in for the memento camera to make like you saw this this cool time lapse. And then also he wrote a page frames to give on how to take the JPEG images and use easy gift to combine it and turn it into an animated gift for easy viewing because it creates JPEG you have to merge them together. And then we also had a guide from Liz I'm using the can bff board. And that's it next week's gonna be a big guy some weeks you see there's a lot of guys and so many so then the can bff guide and the new email the email on new login guides. And then we also have playground so you can just click playground up there and you can see all the ones from the community where folks have the space for thing is super cool by the way I really dug this. So this is a port of like the like the first video game to the mag tag. So check it out the code is is there I think it's in circuit Python but I'll be honest I didn't actually read the code. But I just love the idea of taking this old old display and pouring it over. And then yeah we've got this like koozie. So I guess this person has a lot of koozie. So check it out this is you know your free place online where we don't have ads and we don't do any tracking. It's just free to post your projects and you don't have to have anyone log in to see all the steps. They can just look at your projects. No ads and do not track is as you say we also respect do not track track. Yeah so when we were showing these here if you did if you notice what was the circuit Python and then you go down to the gif. I think sorry the time lapse time lapse. Yeah if you notice by the way look that's what it looks like you probably don't see this on any website so we we support do not track so you have to actually acknowledge like oh yeah YouTube is probably not gonna you know probably gonna want to know more about me so our site respects do not track that's why there's all those warnings it says hey there's there's something else there but you have to click through. So anyways that is our it's our hardware of the week this week over 27,000 guys I think I think we're up to 3,000. Let's do some factory footage and that's factory footage let's go right to some 3D printing right away. This week we're going to do a speed up and then we're going to roll right into ion and PI so let's print it. Okay, don't forget the code is power BFF. All free stuff. All that stuff can get both mix and match it's totally okay. Let's do. This week is from NPS. What is the new product introduction of the week this week. Glad you asked this is NPS which we've not done yet so I'm psyched I always love it when we have a new company to feature NPS makes the MPM 363510 chip DC DC module, which we'll talk about NPS is that stand for monolithic power systems which is might be wondering like wow like like a monolith. And the answer is yes they actually make things that are kind of like rectangular and black and when you touch them. Your designs get much much better. When you evolve, I guess. Okay, so yeah. So NPS they make a lot of stuff with one of the things that I love them for is their step down converter modules and these are all in one kind of they look like chip they're actually inside there's an inductor and a chip. In a couple passives, and they make it really really easy for you to do a power supply that's very compact. So the 3510 when I saw this show up on digikey.com slash me who I got excited because actually I was just a couple days ago I was looking for a chip like this. So this is a module that can take 4.5 to 3.36 volts so like a fairly high voltage input and then bucket down to as little as 0.8 volts to you know 36 volts. At 1.2 amp continuous load current and because DC DC there's no heat sink required. It's very compact and the inductor as I said is built in which makes it so tiny and small and easy to use because all you need is a couple passive components. So like normally on a buck converter you would like me you know there'd be like maybe a diode or maybe you'll be driving a transistor or you know this and that or you need like a feed forward capacitor all that stuff is in care for you all you need is capacitive input capacitor on the output and then a resistor divider that tells it what voltage you want the output. I originally saw this series of chips on the nano every from Arduino I was like what is that power supply that they've got there so you know this board needs to be very compact. Very efficient and they want a lot of current from their DC DC supply so they use the npm 3610 which is like the earlier version of the 3510 but they're very similar. And we also made a breakout for the 3610 like you said give it V in up to this one does 21 volts the 3510 does up to 36 volts. And you see how compact it is it's just a resistor divider there's one extra pull up resistor and then two big bulk capacitors on the input output and you're pretty much ready to go 1.2 amps output. You can check our design files they're up on GitHub if you want to use them. But I also noticed that Digikey has a really nice new EDA footprint and 3d model page for almost every product so on the product page scroll down look for it says EDA models click on it. And you know this provided through ultra librarian and a couple other companies you can export for whatever your CAD software is so I use Eagle CAD but they also CAD CAD or CAD Altium etc etc. The footprint the symbol and a 3d model is pretty cool because then you can use it if you're especially if you're making something really small, you're probably going to have to, you know, make sure that the height and size of your module doesn't interfere with any other component. Like I said, the layout is super simple. You can do it on a two layer design, fairly easy and a circuit board. I would go with a two ounce copper if you can. I think I do for the little breakouts just because you know it's a fair amount of current. You just want to provide power in and then ground there's sometimes a couple other extra pins. Like PG for power good if you want to have external LED or I think there's also maybe a pin you can change the the mode for the buck converter if you want to go from like a high current load to a low current mode for low quiescent usage. And one of the things that you know because this is a you know it's all integrated it's really tiny and I'll show in the overhead how small it is it's it's fairly small and very thin. So the way they do that is of course they they have a very small inductor usually the inductors like the biggest part of your buck or boost converter not the chip the chip is is trivial. The inside it's the inductor that has to be big to make it big they have to have a very high frequency for the PWM runway which is I think like one ish megahertz maybe up to one and a half megahertz maybe two megahertz. So the higher the frequency the smaller the inductor the smaller the inductance you need for the rated current. However, that also does affect efficiency so you'll know that it's not bad efficiency you can get fairly good over 90% efficiency but you're not going to get like the absolute highest you can get. If you're willing to go down to like 400 kilohertz or 500 kilohertz or 750 on some chips I've seen and have a really big inductor that's the trade off personally you know I've had no issue with this trade off and you're not running off a battery or if your battery is big enough that the efficiency isn't going to affect you highly. So for that use case I don't have an issue but just be aware like it is a higher frequency chip so the efficiency will be as high. There's a wide family available of up to like 60 amp modules from different voltage input ranges. The higher the voltage input range the higher the current output the larger the module but you can get as small as that you know the MPM 3811 is 2 by 2 by 1.6 millimeters. So the family we're talking about here is that I've used is the 3610 and 3620 so it's 3 by 5 by 1.6 millimeters so let's look at the overhead real fast and we'll show it in stock so this is actually the power of the effect which is actually the product of the week. So you'll see I wanted to make a board where it was a DC DC converter from this you know 12 volt DC jack or terminal block and 5 volt output at one you know 1.2 amps and to do that I had to make it this small like the board size was fixed because I had to fit. Like so. It had to fit in this like 0.7 by you know one inch size. And so turned out that actually I didn't even have the size to put an inductor and a DC converter and the only way I could make this all work out is to use one of the MPM 3610s or I'll probably make another version now the 3510. And then you can see the bulk capacitance and then tiny tiny little resistor over there that's used to make the provider and then yeah there's an enable pin that you can use to for you know really low power usage you shut off the converter all come all together using these two pads over here. So you know I use this series of modules of time I'm really psyched that they have the 3510 because the only downside of the 3610 is it had that 20 volt max I really wanted to have people be able to use it with up to 24 volts. So I'm gonna probably revise this design to use the 3510 and the good news is that it's in stock so I can do that. Pick them up at did you key for a couple bucks 3510 but then check out the entire family. If you want something very small and very fast kind of can't beat this series of modules from MPM video. The electronics industry is evolving and these changes will have a big effect on the power design market design solutions can now be integrated into one package pre optimized by MPS engineers MPS power modules integrate the maximum number of components including the power IC and inductor while still providing comprehensive flexibility for the designer to tailor to the needs of the application. This provides an even more distinct leap in cost effectiveness and the highest performance over both discrete designs and other modules on the market. MPS modules create incredible space savings in industry standard packaging full integration allows for easy board design and layout which translates into faster time to market. The MPS power module family offers wide input voltage operation ranges between 2.3 volts and 75 volts with 0.6 amps to 800 amps of output current composing the most extensive portfolio of modules on the market. Simplify and accelerate the power design process with MPS power modules. Alright we're going to roll into new products in just a second if we get the code is power VFF. Veneta it's time. Okay first up. Okay we've got a revision to our very popular NAU 7802 this is a strain gauge and all digital converter chip. And it was WQT compatible and it's wonderful for sensing you know strain gauges but also anything with a wheatstone bridge. The one thing that I didn't have was pre soldered in terminal blocks which it now does. So now it's truly plug and play you don't do any soldering whatsoever because it comes with those lonely terminal blocks pre attached you just use a screwdriver open them up and wire in whatever wheatstone bridge you want and you're ready to rock. So a nice little improvement I think people will like it because WQT is meant to be plug and play. Speaking of making stuff more plug and play another thing that is now fully pre assembled is we've got the Stemma rotary encoder. You want to use a rotary encoder or multiple rotary encoders and you don't want to deal with the frustration of timers and checking interrupts and like multiple pins and then you ran out of pins and whatever. These are chainable I squared C rotary encoder backpacks that allow you to read the switch and the rotary value like you know if it's rotating freely can increment or document the value and you can chain them you have multiple encoders built in. The one thing about this was you had to solder in the encoder but no longer we do not live in a world like that. We now live in a world where the encoder comes soldered in already for you. It's the multiverse. Yeah this is the multiverse of rotary encoders. No because it's like the whole point starting QT was to make it so people plug and play stuff. So people have been asking us when are you going to have a version with the encoder plugged in. So the only trade off is you don't get to pick the encoder. We pick it it's a PEC 11 compatible with a switch. I would tell people you know if you have a special rotary encoder you want with more or less detents or whatever it is I think 24 detents per rotation and there's a detent field but if you want non detent field you want 12. Just grab the version that doesn't have the encoder soldered in. Another thing is it doesn't come with a knob. We sell a knob for like a couple cents. Pick one up or a human hand or you can just you can actually rotate it without. Yeah it doesn't come with the old. We have to show these things as a demo. But sometimes the things in the video like human hands aren't included in your package because if we started sending out human hands in the mail we'd probably get a visit. And get you a tow by like Friday. And get a tow by 10 p.m. tonight if I wanted to. Oh yeah. Okay next up. Next up we got a 12 pack of black linear kale switches. We got these for a special kit we made with the macro pad with a bunch left over. If you have a macro pad which has 12 buttons because it's a three by four grid. And you're like I don't want the red the red linears. I want the black linears. Congratulations you cannot pick up a pack of these black linears. We have them in a 10 pack as well if you're you don't want 12 but like always so bad people are like I have a macro pad at 12. But you only sell them packs of 10. Six hot dog buns eight hot dogs. I don't know. Now we have a 12 pack. Okay. Next up. Today we got from Pimaroni their new NVMe base very exciting. I know that there's been a lot of people making these PCIe to M2 adapters. I have not designed one yet maybe I will one day. But for now pick up this one from Pimaroni did a beautiful job. It goes under your Raspberry Pi five does not work with any other only works the Pi five because as that PCIe port and then with a little noodley cable you connect it up and then you can plug in an SSD drive which is apparently like eight times faster than the micro SD card like there. It's an SSD it's really fast. It goes over the differential PCIe port so really great if you want to make a you know network storage streaming something something data logging video playback and you want faster speed than even you know an Evo pro micro SD card. The NVMe base is your way at SSD. Okay. Start of the show tonight. So as you laid out our team our community our customers everyone who helps make the world a better place for you showing and sharing all their smarts open source world at least parts of it. Is this. Yes it's the power BFF is coming soon we didn't quite get all the demos in but I thought we would at least highlight if people could sign up to chat about this on API. But this is a board that lets you have 5 to 12 volts DC input and it will let you plug in your shower QDPI board on top. You also have a terminal block which you can use to get that power out or you can have power come in from the terminal block if you have a battery pack. And a feature of the MPM 3610 so it's a DC DC buck converter so it's very efficient and it'll give you a nice clean 5 volt 1.2 amps. I'll be honest actually got 1.5 amps out when I did my load testing but it's waited for 1.2. And then there's a little mounting tabs because we're going to plug it into a DC jack you know you want to have some mechanical strength to the version you'll get in the shop. You know you see has these four little nothing whole legs and you can break them off if you want to be more compact. And they'll show just a prototype real fast and next week we'll have like a bigger better demo. But this is my prototype before I added the legs. You can just plug into the DC power here maybe I can plug in here see if this will work and then boom now it's running circuit Python it's blinking focus. Yeah. And you can do like this is I think a nine volt but you know we want to do some projects where we wanted to power the cutie pie from like a car or from a DC or battery pack where you wouldn't necessarily get 5 volt clean. So this will convert it down to 5 volts for you. So it's coming soon. You can sign up and we'll have in the shop maybe later in this week. Now. All right. And thanks for the folks who are lining up your questions in discord. We're going to get to those just in a few moments. We're going to do some top secret and Lady is going to talk about that. So let's do top secret and then we'll start doing some questions and we're out of here. Okay. This week's top secret video I'm going to zoom in and zoom out at it but maybe you can talk about what's going on. This is from the memento camera. Yeah. Okay. So this is Brent and he does a lot of IOT stuff. And one thing he's really interested in is the ESP 32 S3 apparently has the ability to do like facial recognition built in using you know like the core and the risk 5 keep you know risk 5 coprocessor or something or maybe like the second core on the S3. And so unfortunately it's Arduino only it's not circuit Python but Brent was able to compile this code. The demo worked on like a web browser but he got it working so that it works live on the memento. So as it's previewing through the camera can detect if you see a face and it can detect a particular face as well. So you can like say hey recognize my face in the future and it does like a fair job of saying like oh yeah I detected Brent again. So we're going to have this. I think you just got working like this morning. I'm going to write up a guide for it and it's coming soon. All right. And that's our top secret for the week but I wanted to show this one off now. Lady is talking about because I was like this is really cool. I made a video. I'm like we're going to show this off. Yeah. Okay we're going to roll right into questions. We're going to line up. Okay. Put some in there. ESP voltage regulation to 3.3 volt etc using DevKit schematic as a reference but curious if there is anything more comprehensive. Yeah the DevKit schematics are very good. I'll see there's one thing about ESP boards that you know because I follow the application guides or the data sheets is you just have to watch out that there's a lot of pins that are special and you don't know what pins are special because they don't really call them out that well. So some pins are not actually available because they're used as like the PSRAM chip select or if you're using octal PSRAM like those pins are used or some have internal pull ups and you can't have them pulled low or pulled high during boot. So I think you know honestly that the modules themselves are going to provide them fairly good power like they kind of went on their own. That's not the tough part. So far as making sure that you don't accidentally use pins for capabilities that they should not be used for. Also like some pins are inputs only and they're not outputs and some you can't use the ADC when the Wi-Fi is on. So there's a lot of these like edge cases and I don't know the place where they're all documented. You kind of have to figure it out on your own. They're in the data sheet but they're just not always when the schematic is at. It's like in a separate section. Good advice. For our two factor authentication. Someone says we use if you use off these did some thank you. I love off the good. Thank you for letting everyone know it is super easy and you should get it better than SMS. Next up is our timeline for the aid from a mental camera enclosure kit. I'm so nervous that since the TFT isn't you know on there super secure. I'd like to make a cover but I'm not that good with a router. That's on me. I was actually going to work on it this week and I did not get to it but I'll try to get it in. The other thing you can do is look at the learn guide that Noah and Pedro did and they have a 3D printed case and you can. The 3D models. You can send it online or you can go to a local maker hacker space. Lots of different choices but if you're interested in doing that. Often with these 3D printing services unless you have something very specific that you know that works you probably are locked into it but this does. This could be one you could try. Okay what's the point of the orange stickers on the standoffs so. Through the manufacturing footage that we did. Oh yeah those little orange stickers. That's a great question. Those are the pick in place pickup stickers so when you have something like a standoff that's hollow and you have to pick it up with a vacuum. Think about it hollow stuff and vacuums don't usually like go together very well because the vacuum pickup goes and tries to pick it up and the air just sucks right through. So you have to have something that is flat and clean but moveable easily that the vacuum head can grab on to it and pick it up. But then later can be easily removed and so you'll often see little cap down stickers also on USB ports. You'll see them on the top because there's a little slots and holes or HDMI connectors. You'll see the little cap on pickup tape. Okay. Some connectors you'll see a little plastic cap. Here's a request a NVME hat that also allows you to add stem and nice by. It's not a bad idea. So I'll be honest like I didn't design an NVME or you know SSD add on because like kind of like everyone was doing it. And I was like you know what I'm gonna let everyone like do their thing because I was like I was like there's like way too many cooks. You know I think that the Pima winning one is really good. I mean like absolutely grab it. It goes on the bottom and also know that while as we pie themselves are making NVME hat but yeah if it makes sense I mean it's honestly the circuitry is not terribly complicated. It's like mostly a pass through and I think you need a power supply and some protection circuitry. Not that it's trivial it's it's just not like a you know you're not designing PCA from scratch. I might design a hat later. I don't have any plans right now though. There's a lot of coverage. Next. If you were put in charge of the next expressive chip and a team of pros at your fingertips what would you want to have. I think lower power Bluetooth is pretty is pretty key. That's one of the things that makes like sad but it's like I would really love if they had the low power that Nordic has for Bluetooth which is hard to compete with because they're pros. Versus the ESP which has Wi-Fi and Bluetooth but the Bluetooth traditionally has not been very low power. Wi-Fi low the low power in general on the ESP32 is really really good. It's excellent but once you turn on Bluetooth it's like the power skyrockets a little bit. Tell me if all these things are in one chip or different ones. HDMI USB BLE Wi-Fi. There's nothing that has BLE and Wi-Fi built in as well as HDMI and USB. There's a few things that can. Yeah you can do a couple. Well I'll say that I think the P4 has might have DSI out. I don't know that the P4 has Wi-Fi. So they're kind of like let's do this extremely like high GPIO chip but it doesn't have Wi-Fi built in and I'm assuming later that they'll add it. I mean they added native USB that was a big request and they did it. And here's another request. This is outside my my pay grade though is would it be possible one day for expressive or any chip maker to have either silicon or some type of emulation to do like x86 so you could get like all of the stuff from the past. Like running natively on inside or one of these things. Yeah it's kind of interesting. I think you know there are some chips that I've seen that have like you know FPGA you have an FPGA and a microcontroller built in and that's where you would have that you'd have the FPGA one your x86 emulator. I think more more likely though is you know I've seen like you know almost to to to form Commodore 64 emulators or Apple 2 emulators just because they're slow enough that even a microcontroller can emulate them. I feel like it's time right like and you get the entire library of software. Sorry there isn't that we did get an x86 emulator going on the ESP 32 but it was just very slow. We actually have to be Windows 3 1 but. And you had USB because then you had a keyboard and then you get all that and then it's like a microcontroller that can be pretty powerful. Yeah it's I mean it's it's it's coming. I think like you know the IMPI from last week we talked about the STM series of chips that was you know it's a pretty good processor and it has a DSI output and a lot of the secret is you have to need a lot of RAM. So this one has like three megabytes of RAM. So now you're actually talking about like a true you know computer. Okay next up I think this is a request featherwing proto with semi QT port for use with radio module feathers or is there another easy way to add a stomach QT port. We do have Spark actually makes a quick featherwing that we stock and they did a good job so I just stock it and it gives you for stomach QT quick connectors. Okay as shown in the top secret with the mental being able to take the face thought on I5 being used with Adafruit IO for user level notifications maybe learning guide as well. Thanks for all the things in Adafruit IO. There'll definitely be a guide I you know I'll let Brent know that you want it to integrate with Adafruit IO. I don't know if that was going to be he's doing a guide with Adafruit IO and the camera but I don't know if it's going to be this one. I don't know Brent. It's a mystery but he does this great. Is there such thing as wireless HDMI DVI. There is but what it does is you have a cable going into like basically a little links computer that then grabs the HDMI and then converts it to like Wi-Fi and then streams the signal or Wi-Fi to another device and then it pumps it. So you can get wireless HDMI kits but they do compression between so you're not going to it's not a pure signal right because there's no way to get that bandwidth over Wi-Fi so instead it's compressed video streaming and there is some lag as well. Okay and then some folks are talking about the USB 32S3 could do some of the HDMI Pmods from one bit squared. Yes you could do you can do TTL to HDMI but it's like just yeah use all your pain that kind of sucks like it would be great if it had a better built-in peripheral and you know I think the S3 like it can do video as the RP2040 cam but it's like you really need it. You need a lot of RAM and if you don't have a lot of RAM and I'm not talking about PS RAM I mean like ideally even like separately banked RAM that's like you can use just as your frame buffer doing it over octal PS RAM. We found you can it's very hard to get good update rates. Mem zisters become a additional solid state component. I don't know. Do you use Mem zisters? I don't know I use Mem zisters. So not none in the desk of lady idiot. I think I saw one product that had a Mem zister in it but I'm trying to remember it was. I don't remember. What's the difference between that and like space RAM? Space RAM is just like F RAM. So it's it's. Yeah it's basically it's just not affected by the radiation in space. Whereas Mem zisters are like it's you know it's a it's a device that can change its resistance. It's a can save its resistance. You can set and change it with voltage and current. But because we got capacitors and ductors and resistors this would be like. So they combine the words memory and resistor. Oh yeah. I mean it's concept I think conceptually got like a working like a decade ago but I don't know that's actually been used. I'll admit I'm not a hundred percent like a Mem zister pro. I could have gotten that wrong. Someone in chat might know. I can't wait for like that. That resistor fail. Lady Aida does not understand that zisters. With that is our questions. All right that is our show for tonight everyone. Thank you so much a little bit of housekeeping here. Power BFF is the code. Don't forget there is all these free things you can get added to your car. We'll do one more question that just came in at the last second. Since we have like one more minute. We got a hug report from making the analog switch into a little boost for the work at 18 makers. Thanks Bill. And then where do you normally get your symbols of footprints for PCV designs or do you tend to make them myself. Although like I mentioned it's key now has this EDA download. I'll admit I take those and I tweak them because the footprints are usually fairly good. The symbols I don't don't look the way I like symbols to be ordered a certain way and you know they there's no way they're going to get those perfect. They usually do I think in a logical order and I like it not logical but like a numeric order in order. And I prefer to do it in a pretty group like all the grounds together and have one pain instead of having like ground one ground to ground three. And also I like to have like you know the ports and the enables and settings and different little chunky groups. Okay. Well that's everything for tonight. Thank you so much for spending some time with us whether it be live or watching it somewhere else later. We very much appreciate it. Once again the code is Power BFF. Thank you for your support everybody. It's a source hardware company. We're not IPOing. Not anytime soon. So we could use the help. This has been native reproduction. Here is your moment of zener. Good night everybody.