 Ask an Engineer. Hi everybody and welcome to Ask an Engineer. It's me, Lady Aida, with me, Mr. Lady Aida on Camera Control and we're broadcasting live from downtown Manhattan. That's what we do, our engineering and designing and coding and supporting and all the stuff that you love to do with electronics. It's all coming to you right from New York City. But tonight, we're going to spend the next 50-ish minutes, 60 minutes talking about new products and guides and tutorials and the latest in Python that opens up to hardware and more. Then get right into it because we've got a jam-packed show. Mr. Lady Aida, what's on tonight's show? On tonight's show, it's a good translator, 10% off the native restore all the way up to 159 p.m. Eastern time, you lose it or lose it. It gets you free stuff and more things that you need. And want? For your maker hobby. We'll talk about the free stuff. We'll go over what live shows we do, talking about the show and tell, we'll have some main factory footage. We're doing a catch-up week, so we'll have a couple 3D printing videos and speed-ups. We have Iron MPI, brought to you by DigiKey and this week it's a product room, DigiKey. We have a whole bunch of top secret. We're going to be spending a bunch of time on that. We've got new products. We're going to answer your questions if we do that on Discord, adafruit.it slash discord. And as of right now, we have 39,000 people. Some of the biggest online electronic community in the world. We're going to have a bunch of great videos that you can find on our website. The biggest online electronic communities in the world. So thank you, everybody. We spent a lot of time keeping it moderated, keeping it safe, keeping folks working well together and it's a safe place online where people can just hang out and talk about electronics and more. So we'll be going over all this and more on Guestive. That's going to be here. Yeah. Okay, so translators, the code, the data, people get free stuff, what do they get? That's right. When you order from the adafruit shop, we will give you free things. Not only do you get that 10% discount code, but when you order $99 or more worth of stuff, you'll get this beautiful PCB coaster that keeps your hot drinks hot and your cold drinks cold and your desk nice and dry. Comes with four little rubber bumpers, too, to protect your desk from being scratched. 149 or more, you get this KB2040. It's a pro micro pinout compatible microcontroller board featuring the RP2040 chip. And it's got buttons, Neopixel and lots of flash and a step at your teapot. It's all ready to go. Great microcontroller board, free UPS ground shipping for orders $199 or more. And $299 or more, we still have our free Circuit Playground Express all in one development board. It's great for learning electronics and doing coding and wiring stuff up without needing anything else extra. You just need this board and a micro USB cable and you can use Arduino, code.org, Discoveries, CircuitPython, MicroPython, TVGill, kind of everything. Yeah. Okay. We didn't host the show and tell them what Pedro did this week. Thank you so much. Thank you. Do watch the latest desk of Lady Eda. We had it on Sunday. We're not going to do a highlight this week because we got a bunch to go through. So it's on all the places we published our videos, including the great testers and stuff. Yeah. And then we're two weeks behind on JP's product pick of the week, only because we had the unboxing last week. Yeah. So here is last week's highlight. It is a StemA analog SPDT switch Metro and it is running over the StemA for power ground and signal to the analog switch board. And then I have this orange wire is one audio input. This white wire is a second audio input. And then the green is the output for the audio, whichever one I'm switching to. And that's all going into a little powered speaker. Both of those audio sources are running into the normally open the normally closed switch. So here's every four seconds, the sound should switch. Switches to iPod, switches back to Mario there. Now make it a lot faster. So kind of like a little DJ fader is the StemA analog SPDT switch with the Max 4544 chip. Okay. And tomorrow's JP's workshop and then on Friday, deep dive, it's got 2pm, 5pm Pacific. Next up, it's whippersnapper Wednesday. We have some updates from the IO team and more, couple of things that they've been up to. Let's go over to it. What you can do right now, which is exciting and interesting is use Blockly for actions on each of them. So do please help us test this out. You can now build just about any kind of IoT device using an IO feed dashboard. And now you can add more logic with actions. Yeah. And this is the beginning. Yeah. You can use the blocks now too. Yeah. So what we do is basically, we had this system where you could have like, email me when a value goes above or below a thing, whatever. And all we've done so far is recreate that dialogue box that had like all those dropdowns in Blockly. And then what we're going to do after we kind of get this all stabilized and people test it is we're going to add more blocks. You can actually start doing more complicated behaviors like doing math or like, you know, not comparing multiple feeds together and like more than one feed and then like writing to a feed and reading from feed. So you can like do, like already this is more powerful than the original actions dialogue box, but we're going to add even more because we were like, we want to have, people always wanted to have a little bit more scripting capability, but we didn't want to create like a new scripting language and Blockly is great because it like works within the browser and you can use on mobile. So if you want to do actions, but you don't want to maybe dive into it too much, you can use Blockly. Yeah. And you can like send SMSes and emails and update feeds. So ESP32 is now on AFRIDIO. And for snapper, you can see the board there. New board, new ever. Yeah. We have usage documentation for footer to snapper components. Yes. And we'll get all the documentation. So. Links, links, links. Links. And then if you want to help us add new features to Adafruit IO, a little bit of a reminder, we're not a software as a service company. We have free Adafruit IO. There's pro versions for people, plus versions, people who rely to use it well outside. Look, I'm gonna be honest with you guys, we don't make money on WordPress now for Adafruit IO. It is not, it is not in any way a profit center. We spend way more money on it, but we think it's worth it because the community loves it. Yeah. And that's why it's not going away because. Yeah. Like no VC will want it. Yeah. It's not going away because it's not like, oh my God, we need to get more subscriptions or else. So please use it. Please check it out. And of course, spread the word. That said, do support it if you can because it does have paid bills. Yeah. That always helps. Okay. So that's what for snapper ones. They check it out on the blog and more good work. Right. Okay. Let's go over to our newsletter. Newsletter. So we just were talking about it before we got on air. Python 100 more time. Yeah. Let's kick it. Blink, blink. Is there a theme song for this? There could be. Could be. Blink, blink, your eyes are purple. Okay. Every week, Ann and team deliver one of the best and only Python 100 newsletters in the world. Thousands, thousands of subscribers. You send your projects and more this week in addition to CircuitPython 9 release. And she's 901 since this was published. Yeah, there's 901. Lots of bug reports coming in. Keep sending them in. We know that people are actually starting to use nine. We're taking feedback. We're updating things. It's software. Numbers are meaningless, but still try out nine. Okay. And then this week we wanted to talk about. This is cool. Genius week. Okay. So MicroPython. So one of the things is this is like a throwback. So when we, I tried to use MicroPython, one of the things that I thought was so awesome about the pie board was that it showed up as a USB drive and you could like save files to it. And I was like, this is so cool that when we were doing our MicroPython port support, we wanted to add MicroPython to all of our hardware and we started porting it over. Like one of the things I told Scott who was the one lonely developer, I said, we have to have this capability where you have native USB support. And I was like, I also wanted, I wanted like MIDI, I wanted HID, so keyboard and mouse because this is one of the things I loved about Arduino that it was really hard to use. So one of the really cool things that we were able to do is TAC who works at Adafruit has this big project called Tina USB. And Tina USB is basically the idea is to have a USB stack that is universal for host and device that works with any chip. And we needed this because historically the way every chip would work is every company would have their own USB stack and it would be completely incompatible with anybody else's. And so the PI board was an STM32 and that supported USB device but like no other MicroPython board did. And like to add support was really complicated because again, it was like every stack was its own thing. But with CircuitPython, we very quickly moved to having, I think we initially, the first release like 1.0 used the SAMD21 native stack but then we immediately like, well, like, oh my God, this is gonna be impossible to maintain. We moved to Tina USB and that's why in CircuitPython, pretty much every device that has native USB support then you will get keyboard, mouse, MIDI, USB disk, USB, a second serial port and now you can do custom HID devices too. We have a project coming soon which is gonna be a custom HID device. Just kind of neat. All because we have Tina USB universal across all of the CircuitPython ports. And what's great is I love it when we do something and then that stuff ends up going back into MicroPython since this is cool ecology, like MicroPython does stuff, we do stuff, we share, we go back and forth. So MicroPython, because they have added Tina USB support for so many of their ports, including the RP2040, which is using Tina USB, they're now supporting native USB devices as well. And so one of the things that I think people really wanted for the RP2040 was keyboard support. So you can act like a keyboard, you can now do that thanks to Tina USB. Thanks, tech. All right. Feel good. Good stuff. All right, so check it out. You can get this every week delivered at AdafruitDaily.com. We have a completely separate website. We don't have spam people, we don't sign up for newsletters. It's on AdafruitDaily.com. You have to go there and sign up for it and it's delivered every single week to your inbox. Let's do some guides and more Lady Aida since we're talking about open source. Can we have all the guides? Yeah. We have 2,999 guides right now. No. Yeah. School there at the bottom. I don't believe you. 299. Yeah, man. Almost 3,000. Yeah. How many till we get to 3,000? One. Wow. Wow. Yeah. Wow. That's a pretty amazing. Wow. You know, I have to, you know, there was a guide I never finished it, but you know what? Maybe Ed Jepler's guide will be the 3,000 guide. Could be. Could guide. Okay, he's gonna know the guide real soon. But speaking of 2,999 guys, wow, 2,999. Yeah. All right. Good guys, cause I didn't catch that. Highlight. Okay. Ninepager did a project with the Pico Bell Dubbler making a little like case brick that you can use it with Lego plates. Also made a little battery pack too. I think it's gonna be kind of handy. People wanna do projects with Raspberry Pi Pico, Pico W, and like a Pico Bell. Now you can attach it to brick type stuff. We saw somebody, I think on Hackeray they posted a project where they were controlling an Elgato light. Turns out that these lights actually have like a rest interface over Wi-Fi. And I was like, this is a perfect circuit python project. So they made a little light controller in circuit python using the TFT feather. You can use the buttons to select the brightness or the color temperature. Very easy, really easy demonstration of how to interface with something that has a rest interface. I also have the guide for that Pico Dubbler. There's also this guide for this single plate. They're kind of similar but they're different enough. Oh wait, keep going. And then Aaron has a guide on these very cool reactive paper lanterns. I think that's new as of this week as well. And we're gonna play a little short video, come here. Make your home dance to the music of the steers. Create a strand of magical addressable lights with Adafruit Neopixel Rings. Paper lanterns reflect and enhance the glow, creating a lovely backdrop for your home or garden. Take the animations to the next level with LEDFX, a free open source software program that uses your computer's microphone or native sound to make these lights sound reactive. This project requires some tricky soldering work but no coding. See the full build tutorial at learn.adafruit.com and remember to subscribe if you'd love making beautiful things. Okay, let's do some factory footage, how it's made. Okay, so we're gonna do some 3D printing videos we're gonna play them back to back to back to back. So we're gonna do the IoT. Oh wait, so that's a new guy too. Shoot, there's actually a couple of extra guides. We're gonna play these all back to back and we'll see you on the other side. You can develop Raspberry Pi Pico W projects with Adafruit's Pi Cowbell Proto Boards. The Pi Cowbell Doubler features Stem-A-Q-T, a reset button, socket headers and LiPo battery charging. It's also gotten on-off switch, extra ground and voltage pins and optional support for accolined batteries if you don't want LiPo rechargeables. The slim socket headers keep a low profile with access to all of the ports, not to mention visible labels on the pinouts. Make your project portable with a LiPo battery and charge it using the Pico's USB port. We designed and 3D printed Lego compatible mounting plates for prototyping your projects with bricks and plates. Just snap the proto board onto the built-in standoffs and slide a LiPo battery into the protective sleeve to get started. We think it's a nice and easy way to add extra boards like the Pi Cowbell DVI board for outputting to an HDMI display. Get the full pinouts, demo code, files and documentation from the product guide at learn.aderfruit.com. The screensaver demos for the Pi Cowbell DVI are available as UF2 files, so installing is as easy as drag and drop. You can 3D print the mounting plates in your favorite PLA filament. The plates are separated into two parts to prevent from having to use any support material. We hope this inspires you to check out Adafruit's Pi Cowbell Proto Underplates for building your next Raspberry Pi Pico project. You can build an internet-connected bird feeder camera with Adafruit I.O. and Circuit Python. This project captures images of birds that you can view on an Adafruit I.O. feed or dashboard. We designed and 3D printed a bird feeder to house the Adafruit Memento, a large battery and a PIR sensor. It's got a tray for holding bird seeds and a perch so birds alike can visit and have a meal. A PIR sensor is connected to the Memento and whenever motion is detected, a photo is taken and sent to an Adafruit I.O. feed. The Circuit Python code connects the Memento camera to your Wi-Fi network and uses the Adafruit I.O. API to get a feed from your account. When the PIR sensor detects motion, the Memento takes a photo and sends a JPEG to Adafruit I.O. On the Adafruit I.O. website, you can view the image within seconds of it being captured. Using the Adafruit I.O. actions feature, you can receive email notifications whenever a new photo is uploaded. Our build features a large battery that has about eight hours of runtime and it can be recharged over the Memento's USB port. We found the bird feeder isn't exclusive to just birds, squirrels and chipmunks are fans too and they seem to be more photogenic. We hope this inspires you to check out the Adafruit Memento for your next internet-enabled camera project. You can develop Raspberry Pi Pico W projects with Adafruit's Pi Cowbell. Okay, I think I played one video for a second out of order. Sorry, can only watch all these. We love this stuff. So it's so good. It's so nice to watch it twice. All right, let's do some IonMPI. IonMPI, I brought to you by DigiKey and Adafruit. This week the product is from DigiKey. Whoa. It's Vicky. Okay, yeah, this week I'm gonna show off the DigiKey standard tool kit. So it's from DigiKey, but it's kind of like it's actually cool. So I thought like I showed off. Okay, so let's go check it out. So this is their photo. So this is, the little web is sort of like the Adafruit, like we have a lady I took it. This one has a little bit more stuff in it. And also like that it comes in a really nice blow molded tote with like some cool bolts and stuff on it. And it's got the new DigiKey branding as well. So it's like a little latching tote we see and it's got DKSTK1. So I've noticed that ever since DigiKey started doing they did like a branding revision for stuff that's on a dash between Digi and Key, but also they're releasing more products as like in-house brand. Sort of like you know when you go to like the grocery store or whatever they're like, oh, we have the Whole Foods 360, whatever brand all over. So that's good because it's like you DigiKey will be able to get you stuff that is at a really good price and it's like standard items. Like they're not probably not gonna be making like controller chips, but they are gonna have stuff like battery holders with connectors. So this is something that isn't actually available from like any of the standard battery holder vendors. So they're like, okay, we're gonna make our own and sell it. They also have a proto boxes with the like brand boards that fit inside. It's kind of reminiscent a little bit of Radio Shack. Used to have these sort of things, but of course, but they don't have them anymore. Well, DigiKey's got your back a lot of different sizes. So check out these proto boxes. I also saw they've got heat shrink kits and stuff. This one, you know, also under the DigiKey standard brand. So we're probably gonna see a lot more items from DigiKey standard as they start. You know, they have this new warehouse. They have a lot of space but we don't wanna fill it with all sorts of goodies. Let's go to the overhead and we'll check out this kit. So it's kind of big, but so it's got these large connectors open and dun-dun-dun-dun-dun-dun. Okay. So this is what you get. So what I like is everything has its own little spot. So when you take it out, oh, so make sure I don't spill drink. After you like move it, there's a spot that you can put it back and it sits nicely in it. So you know where it goes and what you're missing. So you don't forget anything. So it comes with like kind of like a standard multimeter. It has DC, AC voltage, resistance, continuity, diode test, and current sensing. There's also, you know, it's got a little kickstand and little lead holders and the leads are over here. They're nice leads, by the way. Let me show them to you. These are not like the stiff leads that you sometimes get. These are kind of nice, you know, nice and pointy and sharp. And you can like remove this if you want to have the long leads or just use the points. And then these are all cat 3s, 600 volts. So that's kind of like, you know, for testing and stuff. It's not, there's a backlight, but there's no auto ranging. But like for, you know, if you want a low cost multimeter to get, you want a fluke multimeter, did the key will sell you one for a couple hundred bucks. There's also solder equipment. So they've got a hackle blue, 40 watt, 120 volt iron. I like that they, you know, it's a lower cost iron. It doesn't have adjustable temperature controls and stuff. But, you know, it's going to be lead-free since hackle makes lead-free stuff. You can change the tip out and they give you an extra tip, which I think is really nice. And the tip is good for like heavy SMTs like SOICs. 12 of 6 is 0805s. I think you could probably do maybe a six or threes and definitely through a hole so you can plug it in. And, you know, like I said, there's no on-off switch, but that's, you know, for a beginner kit, that's fine. And then they've upgraded the little holder. Like this usually comes with a little holder that doesn't have a sponge, but this one does, which I like so you can clean off. You can put water in it and clean it off. So nice little stand. 50 grams of solder. I would recommend, if you're going to pick this up, also get some more solder because you will run out. You know, it's very fast. You put together like one kit. So maybe get another 100 grams after this or another like spool. It's worth it. Solder wick, this is a nice copper wick and it's two millimeters wide, five meter, five, two millimeters wide, five feet long. You put it like this and then you can pull it out. So it's kind of good. And they put that in as well as the standard solder sucker. Usually you only get one or the other. So I like that they include both. So you can actually like do some rework. There's the battery for the multimeter comes with the battery. So, you know, it doesn't accidentally turn on or anything. And then over here, a really nice set of screwdrivers. So Phillips and flat, not too big. I like that they're the small tips. So double zero, zero and one on the Phillips. And then 2.42, sorry, 2.43 and two. And they even say on the side what they are, which is nice. So you know, and then they've got the little rotating ends you can, you know, you press down while you rotate. So you don't have to strip the screws and nice hardened tips. So that's very nice. Nice set for the tools here, definitely. And then these also have little spots that they live in. Wire strippers. So these come with the slots. They're nicer than like the $2 ones that I started out with at MIT. This is the set that has larger holes. This is good for electricians as well as, which I think is kind of the goal here was like electricians, technicians and makers, but it does go down to 28, 24 gauge. So breadboarding wire, it's definitely, definitely be able to strip with this stripper. And then yeah, locks open, sorry, sorry, locks closed or open. And then the tip can be used for bending. And then there's, I cut wire with this. But if you're dealing with heavier material, they also have diagonal cutter dikes. So this is definitely for like more intense cutting. It doesn't up spring. Yeah, for most uses, you know, I would just use these. And then for wedging stuff, you got your drop forged needle nose pliers. So a nice kit for about a hundred bucks. So I think I gave you the tour. And of course it comes with the case as well, which I think is actually like, you'd be surprised like cases are quite expensive. So definitely worth it, especially given that you get the full case and everything to put it in. And then you can latch it and put it under your desk. So I think it would be good for makers and technicians. Did you key? I said, did you key? Maybe you wanna go back to us or? Yeah, I was gonna go over here. Okay, yeah. It's in stock for about a hundred bucks. Good for makers, students, definitely like your first soldering, you know, kit. You wanna give a gift to someone. It's kind of a good gift. Schools and maybe like offices where you're like, oh, I wanna be able to do some quick repairs. You don't have it the full rework station. And this is especially for the price. It's a good, it's kind of a little bit of everything. Here's the other thing. If you get something on Amazon, it's probably gonna be junk. Sorry, it's true. But you know, Amazon has all sorts of weird ways they kind of subsidize shipping. Not really, but you could get it for a good price plus low shipping. Yeah, it's in details. Like using a Haco iron instead of like a cheap, like no name brand, I think is for example, like most places you get, you know, you'll get like a $20 kit, but like the sort of iron will like break immediately. Like Haco will, you know, it's inexpensive and it's the best of the inexpensive. Okay. That is, that's, this is this week's time for a good day. Yep. Okay, don't forget the code is translate or you get all these free things too, depending on what you put in your cart. But use the code, save bucket to, let's go to new products. New, new, new, new, new, new, new, new, new, new, new, new, new, new, new, new, new, new, new, new, new, new, new, new. First up. We have an update to the motor shield. It's a very small update. Basically, I added a VIO register, VIO selection jumper. So if you're using it with three volt or five volt Arduino compatibles, it'll work. The logical level for the I-Squirts, you will work either way, which I think people like. Otherwise, you know, for 99% of people, you're not going to notice the difference. Also, the silk screen. So this is now back in stock. Right. Trinkies. Okay. I got a lot of Sandy 21 E18s. And so we're going to see a bunch of Trinkies coming out. This is the first one. This is by request. Two versions of kind of the same Trinkie. It's got the Sandy 21 power supply, a little neopixel reset button, and then an SHT-41, or on this one, we have an SHT-45. This is basically, sorry, not basically. They're completely code compatible. In fact, your code can't tell which one you've got. This H2-41 I think is like 1.8% humidity precision and the SHT-45 is 1%. So a little bit higher quality. Some people really want the extra precision that you get with the SHT-45. Either way, when you plug it in, this is an Arduino and circuit Python compatible mic controller board. You plug it in and immediately start spitting out the temperature and humidity data, which you can then use to plot or to graph. Audit for down. Audit for a yo. Or you can pipe that data into Excel, or you can log it with Python, or you can use it in Visual Basic, whatever. You just basically get the data coming out of USB is a comma separated value file. There's also a touch sensor on the end. That gold area, if you touch it, it's a sensor. So you can use it as a secondary input. If you want, there's a little key chain slot if you want to tie it to something. And it's just meant to be very inexpensive way to just get precision temperature and humidity data into your computer. And you don't have to do any coding or soldering or wiring because it's just like plug and play ready to go. So I'll do a couple of projects with this, but I think there's a lot of people who are like, oh, I just want to get temperature and humidity data. And then of course, if you want it to be further away than your computer, just use a USB-A extension cable, which we have in stock with three meter ones. And then you can put this anywhere you like and measure the temperature and humidity that way. Okay. This is probably similar. This is the same thing, but this was 45. So it's two versions. Blue is the lower precision. Black is the higher precision. But again, code-wise, it's identical. Okay. And then next up, one of my favorite companies because it's a cause and a business. Yes. I fix it. Always fighting for right to repair. They also make some really great products. So they were like, hey, you know, we have new stuff you could carry. And I'm like, oh yeah. We carry some of their spudgers and toolkits. So this is their magnetic mat with an ESD bin area. And so you can come to the market, you can write on it. It's got this beautiful like blue architectural background. It also has these little bins at the top where you can put components and it's ESD safe. So it's great for chips and it's magnetic. So if you put screws and hex nuts and things that they won't roll off and fly off into, you know, the middle of your room, they'll stay put, which I think is really nice. It's also apparently stackable. So if you have multiple of these, you can like put one on top of the other and like your parts won't get disturbed. So I thought it was a really nice upgrade. We already carry their magnetic mat, but this is kind of like an upgrade to the magnetic mat. Okay, next up. Next up. They also make a really nice anti-static strap and they're like, this strap, not only is it a very good anti-static strap, but it will fit larger wrists than most off the shelf ones. They're like, oh, the ones that are often made for people working in Asia, which is kind of where a lot of electronic manufacturing is done, they're smaller wrists. But if you want bigger wrists, this one's adjustable. Don't forget, you have to clip the clip part to an earth ground and a lot of electronics work benches have like an earth ground explosive. They plug it into the wall to light the lamp, but then there's also a place you can clip your anti-static strap. So just don't forget, you have to do that. You don't leave it dangling. It has to clip onto something. But once done, you can keep the wrist strap on and you are earth grounded. Okay, neck it up. Next up, we also have, it's a really great idea. It's a very inexpensive, simple tool. It's got a magnetic base. So of course you can like easily attach it to your desk. All it does is it like grips two little things. And it's a cool thing on the back. Two wires and now you can splice the wires together with soldering and you don't have to like hold it with one finger and like your thumb is pulling the solder and like your other hand is getting burnt because you slipped and it's made of silicone. So it's, you can, you don't have to worry about accidentally melting it. So it's like a really nicely made wire holder splint for soldering cables, wires, or even like components that you want to like have solder tails on them. Probably also good for holding stuff while you're doing, you're heating it up with heat shrink. So altogether a nice little tool. So it's all handy. Yeah, three very nice tools like from, I fix it. Also like someone's just doing electronics. These are cool. These are good things to get them going. Yeah. And like, and these are not included in that toolkit that we just covered on INFEI. So it's gonna be a great addition. And you know, if you want to support a company that's out there making right to repair an important thing for people to know about. Support the company. That's right. I love them. Okay. Also great looks. Okay. Now you got a whole bunch of Adafruit products. So the first one is, this is the TCRT 1000 Breakout Board. And you can see, I'll show the sensor later. Yeah. I'll actually go to this photo. Okay. So this one on the end here is a right angle optical sensor and there's like two little eyes and they look so adorable. They're like we'll Google the eyes. But really one is an IR transmitter and one is an IR photo transistor. What happens is that one half, the LED half like beams out light and then it bounces off some object and then we'll bounce back into the other eye which gets detected and then you know that there's something in front of the eye. It's basically an analog, you know, proximity slash distance slash, you know, obstruction sensor. Not meant for big distances. It's like good up to like maybe five millimeters or so. But what's nice is that, especially if you, the reason I got this is that if you're trying to measure something that's rotating and you have a reflective metal strip around it and then like a little black mark like a sharpie mark it'll not reflect off that black mark. And so you'll know when it's spinning. So it's good for like detecting rotation as well as proximity. So on the little animation you can see in the bottom left there's a little red LED that's a signal. So as you get closer that'll get brighter and brighter because that's indicating that the amount of voltage that's getting generated from the reflected back light is higher, sorry, is lower. It goes, yes, it goes down when something is nearby. So it's reverse polarity because it's a transistor. Dependent diameter in the middle so you can adjust the LED current. You can adjust it from one milliamp up to 100 milliamps which is the max range. This is one of the few right angle optical reflective sensors. We have, you know, some breadboard-y ones but you have to like connect the resistors and you have to wire it up. This is kind of all in one, it's ready to go. You can plug a JST pH two millimeter pitch cable in and just like you're ready to go or you can solder to the wires, to the pins on the board. Either way, this is a very easy way to get started with a photo reflective sensor. Okay, I'm going to start the shift tonight beside you, Lady Aida, our customers, our team and everybody who shares and makes things go in this world. Okay, this is the LTC. Oh my goodness, we have to remember the part number. Can you go to the back? I don't get it wrong. LTC 4316, thank you. So I can go back here. Okay, so this is a really interesting chip from Linear which is a little expensive but it's interesting enough that maybe it's worth it. Now owned by Analog. So the LTC 4316 is an on-the-fly iSquared-C address translator. So why the code is translator? So if you use iSquared-C devices you probably have the experience of, you know, I have a device that is iSquared-C address 0x38 and I can't change the address. It's fixed. Sometimes you have little address jumpers but usually not. You want to use two of them or maybe you have two devices that have the same address. You can't share the same iSquared-C bus. Every device has to have a unique address. This is going to be fixed in i3-C but we're not there yet. Still using i2-C for a lot of stuff. Well, sometimes you have two iSquared-C buses, you know, just have two buses and one each one, you know, talks to each sensor. Sometimes that's not possible either. And so this is chip, it's kind of a solution. So on the left side is the input port and on the right side is the output port. And so there's basically, you know, it translates between the two buses and in between is a little bit of logic that if it sees an address on the, coming in from the left side, it will twiddle some of the bits before sending the address onto the right and only does this for the address bits, which means that basically the controller connected to the left side, you might control your Raspberry Pi, we'll see a different address on the device side, but the device has no idea. The device is like, it thinks like, hey, I'm good to go. So this is a little example, just showing a QT Pi board. Oh, can you like zoom out a little bit because this will cut off? Yeah, I can zoom out. Or zoom, yeah, you want me to do that? Yeah, because it was just because it's showing all the devices. Okay, so in this image, you've got on the top left QT Pi board, you know, whatever has a STEMI QT iSquared-C output. And then it connects to an HT20, which has a fixed address, it's a temperature humidity sensor, and then the translator, and then another HT20. And this STEMI QT board, the controller, will see one on address OX38, that's the first one, and then through the translator, it'll see another one at address OX58, because you flipped a couple of bits. It's a very interesting chip, you know, because again, it does it on the fly, you don't need to use an expander or multiplexer where you have to tell it, no, I want you to change, it's totally transparent to the controller. And the way you set the bits is if you click on the back, the only thing is to set the bits is a little bit weird. It uses voltage dividers, and there's a high divider and a low divider, and I went to this in one of the videos, it's a little bit complicated. The upshot is I couldn't make it so you can change any bits easily. It would have been a gigantic board with tons of switches and resistors. So instead, the board will always flip the highest address bit, A6, and you can switch four or five with the dip switch on the front. So basically every address will always have A7, sorry, A6 flipped, and then you can also flip A4 or A5. So it basically gives you four options for different addresses, which I think will cover 90% of cases. And if you still need more address options, there's a little spot for the XORL, the low XOR bit, three bits, and you can solder in a 10K resistor or 50K resist, 47K resistor, and it'll let you flip other bits as well according to the data sheet, which is check the data sheet, there's a table showing all the resistances you need and what bits will get flipped depending on their assistance. Interesting chip, a couple asked for it. Again, it's not as inexpensive as a multiplexer and a multiplexer will give you up to eight, four, eight options, but this is a nice transparent way of changing the address. So I thought it was kind of a cool hack. Another warning, I don't believe it supports clock stretching, because that's probably gonna confuse the heck out of it. And secondly, it obviously doesn't support what's called a multi-master where there's bi-directional I squared C and the third thing it doesn't support is, well, think to watch out for is the driver for the device has to let you select the new address. So if your driver has a fixed address in the firmware and you can't change it because it's not expecting you to be able to change it because it was like, why would you have a different I squared C address? You're gonna have to go into the code and edit it to change that up. So, you know, a couple things to watch for, but still a very cool, weird chip. So thought it would be useful for some people and it's in the shop now. Okay, don't forget to code to translate. Tor. Translate Tor, 10% off in the store. Because of the translator. Yeah, because of the translator. Okay, we have some questions lined up, but we're gonna do top secret, show some videos and show some stuff and then we'll do questions after. So let's just jump right in. All right, I did it with this. Okay, sometimes I have a lot of faith in humanity and then sometimes I get products that have center negative. So you see here, I actually even like use some Sharpie marker to really highlight this. The outer connector is positive and the center is negative, which is like opposite the 99.9% of DC connectors. So like if you look at, this is like a 12 volt power supply and I've got my multimeter here. And if I check this, like I said, you know, 99% of products is center positive 12 volts ish. But then what's this, this, this is a magical cable. It does exactly what you think. It's a flippy floppy, reversey poppy. So now when you check the polarity, it's center negative. Okay, very handled little cable. So I just finished testing it. So I'm gonna try to get into the shop. This is a USB trinky, which has a temperature humidity sensor. And this is a QDPI board with a USB host BFF attached. And then if I plug this in and on the computer, you'll see that I'm getting the USB serial data from USB host through to the QDPI SAMD 21. So if you look over here, the way this is working is QDPI board, which is a USB device is plugged into this on the go cable into this micro B port on the BFF board. And then this is a USB host chip that does serial, sorry, SPI to USB host is called the max 3421E. And what this does is allow something that only has one USB port to basically have a second USB port. This is a great demo because it just reads the serial data from here and then pipes it back out over USB, but it tests the enumeration, tests that it found the CVC device and you can see the LED telling me when data is being transmitted. So this is kind of fun. It could be a really good little board. I can sort of directly off of the back to save some space. And this will give you basically two USB ports. You can do USB host to device translation or conversion. That can be good for accessibility projects or you know, keyboard mods, et cetera. This is almost working. One little fix I have to do for the power supply and then I can get this into the shop. All right, Lady, what's this? Okay, so during the part shortage, you know, microchips sort of require that we book a year or two's worth of inventory. And so I ended up buying a lot of SAMD21s because we use a lot of SAMD21s. But then they shipped me like two years worth all at once. So now I've got like 50,000 SAMD21s. So you're gonna see a lot of SAMD21 products coming out like this Trinky, this is the board, the SAMD21E plugs into USB and it can run circuit python or do we know or even micro python. And on the end here, you see this nice cut out with an SHT45, that's a precision temperature and humidity sensor. Oh wait, hold on, there you go. Temperature and humidity. And there's also a capacitive, tachyne, neopixel and a reset button. And this is the tester. So this is a Pico board that is able to program a SAMD21. It does it in about like five seconds, ding dong. And test complete. All right, and this is where I need to go into the shop. So it sends humidity, temperature and the serial number of the sensor out over CSV. So it's gonna be perfect for people who just wanna like get that data in to do data analysis or environmental sensing stuff. So that's a little, that's a little dev board. All right, lead it was this. Okay, I'm testing out this new board I designed. This is a 38 kilohertz IR receiving decoder board. So what this has is two IR decoder chips like one right angle and one like straight up and down. It's basically the same as these kind of like red board IR decoders. They look for 38 kilohertz IR remote signal and they decode it. And what's important is that they're actually kind of designed with the game and the decoding logic to handle remote control specifically. So you can see when I press this remote button, it's telling me, okay, I got some signal. And then if you look at the Arduino output, I'm seeing NAC data being decoded. So this is good, this is working and it should be a lot easier to mount. And of course, having two selectable decoders means you don't have to worry about bending this sort of sensor up and down. And I like that it tells you when it's getting signal as well from the IR LED. So this is ready to go. All right, lady, it was this. Okay, I just showed off my 38 kilohertz IR decoder and this takes remote control messages that are encoded in 38 kilohertz infrared and decodes them. And this is a different breakup or this is the TSSP 7738 demodulator. So it's the difference between a decoder and a demodulator. Well, if you look at the oscilloscope over there, you'll see the difference. So on the bottom, you see a 38 kilohertz on off pulse. Basically, I'm sending 38 kilohertz IR and then I stop for 10 milliseconds on and off. And the demodulator can very easily detect when there is 38 kilohertz IR or not. But if I change this for a decoder, which is looking for infrared signals, it has like internal logic that's looking for valid infrared. So what happens is when I plug this in, you'll see it does detect it, but then it eventually disappears. Oh, quickly, plug it in and plug it. Oh, can you, I'll look at this. So you'll see it's like, oh yeah, I found the signal, but then the internal logic is like, oh wait, that's not a valid infrared signal and it turns off. So this is good for infrared remote signals, but it's not good for just detecting 38 kilohertz IR in general. For that, you need a demodulator. It could be used for non-infrared remote projects that still want to do infrared signaling. Okay, cool, what are these? Okay, so this is the board I just showed off in that video. So this is the diode demodulator. Doesn't have any smarts to it. All it does is look for 38 kilohertz infrared and then gives you the envelope output. So good for like, some people use this for like proximity or distance sensing or like other kind of weird sensing that's not, that uses a modulated IR, but doesn't use infrared remote controls. And this is, you know, we showed off this chip on the great searchers looking for precision humidity and temperature sensors. And this is like incredibly high precision temperature humidity sensor from TI, the HTC 3021 and 20. Assuming a little breakout board for it. This is that PWM. I think I talked about this a couple of weeks ago. I designed a little PWM output board because somebody was like, oh, I just need to generate like a 250 Hertz or 25 kilohertz signal. I actually got the prototype for these and I messed it up. I got to re-design this board. And then made a little mistake on this. I'm also sending out new pointers for it, but this is a USB host VFS. So you solder onto the back of your QDPI board and using the Max 3421E, it gives you an extra USB host port. Just a secret. It is very top, very secret. Okay, we're going to do some questions and then we are going to bounce. Okay. You have something lined up. Bring it out. Okay. First one, triple answer, but you can also answer this one. The circuit Python line socket stuff allow for more ethernet targets more than with net. They're not really any other chips that we support. So you could add other ones, but wasn't that the only one that we have drivers for right now? Okay. Next up. Brr, brr, brr, brr. If I fix it, Matt, what kind of a marker would you use on a dry erase? Yep. Yeah. Yeah, I think so. Check, to be honest, I don't, I'm assuming it's a dry erase, but I'm sure I fixed this documented. What kind of? Okay. Next question, is there a 38 kilohertz visible red receiver instead of IR or 40 kilohertz or 56 kilohertz? I've never seen a visible light module. You could make your own, but I don't know of any like off the shelf, ready to go. I will say that the infrared sensor sometimes have a little bit of a wider band for the detection. And so, you know, for IR, you might be able to get away with some red LEDs and might, you know, might actually, like it gets triggered by light, you know, you could probably try red and it might work. Okay. This one was answered in chat. Who handles circuit pi fontite download site, the ESP32 entries in the programmer page. They found that the bootloader.zip bundle was possibly missing. Maker Melissa is the one who handles that and just up an issue on GitHub. She actually has been working on it lately. And those folks just connected in chat. So that is how you do it. Great. Thanks Melissa for being in chat and answering it. Next up, since the Memento has ESP chip capable of Wi-Fi or ESP now, I'm curious with possibility of having two of them sending captured image to the other one display. I thought how fast they could complete and be ready for another maybe five frames per second purpose like completely offline doorbell. I actually think, yeah, I think five or 10 frames per second, you know, could be possible. Especially if it was only 240 by 240 and it was JPEGs, because then you could just, you just send over this 5K file over Wi-Fi and then display it using JPEG decode. So yeah, I think you can do a couple of frames per second. I'll see why not. It's totally possible. It's not a project we've done yet. Okay. And then where to put the issue if you see something on CircuitPython download site is just github.com slash Adafritz on circuitpython.org slash issues. Next up, MXC sense distance for the TCRT1000, a few inches, I guess. I think it's like five millimeters. It's a very, it's a trend. It's a reflective sensor. You can use proximity, but it's really for detecting white or black stripes, like something passing by. And then if you sign up for Adabox now, which one does it start off with? 22. We'll be shipping that one probably this summer. This summer. Okay. I think, let me check the questions. What's the symbol of weatherproof a project? I'll say this. You could probably do weather-resistant. I'm always reluctant to say waterproof or weatherproof. I'd say resistant because weather is pretty intense. However, check out our guide on learn. We have a lot of making things water-resistant. There's sprays, there's coverings, there's depending on the closure. There's enclosures depending on what it is. We have an entire guide. I think there's an old video of me getting like doused with water too for different things. Yeah. But enclosure is kind of the best thing with some of the gaskets. Yeah. Speaking of that's kind of the best thing. We have to be careful. I can't make one mistake. The water gets in. Yep. Okay. And with that, those are questions. Okay. Thanks everybody. That's nine o'clock. Yeah. We did it. Okay. That's our show for the night. Don't forget the code is translator. All the free stuff is there. This has been an Adafruit production. We will see everybody next week. This is your moment of Xenor. Thanks everybody.