 Hey, hello, and welcome to Adafruit show and tell it's a it's a weird one because it's me It's not Lady Aida and Mr. Lady Aida tonight. They're off doing Lady Aida and Mr. Lady Aida things a little busy with with Adafruit business So here I am stepping in for a guest slot Which I'm excited about because I love doing show and tell and I love to see what kinds of things people are building and If you want to come on show and tell if you're watching this right now You're like, hey, this is a live show. I wonder if I can get in on that action. You can head on over to discord the Adafruit discord is adafruit.it slash discord and If you head over there, you'll see that there's a link for the stream yard to jump into this very show and tell you'll be able to take a couple of minutes to show us your project talk about it and if The show and tell is full when you arrive. Don't worry as people drop out other people can join in so Let's first of all check in with our very good friend Kevin Walseth from Digikey. Hey Kevin. How's it going tonight? Yeah, you're doing it's going good. What's new? What's new? There's so much new in our industry Nothing ever slows down does it? This is true So a couple things I want to chat about today I'll share my screen in just a second or actually I'll have you share my screen because I can't do it sounds good But something kind of not really Digikey related that I started playing around with today that I don't know how I never Did this in the past was Octo print on my 3d printer. Oh How how did I miss this and not use this for so many years? So for people who don't know tell us about Octo print how you've installed it and what you're using it for Octo print it's still taken apart. I'm getting a better camera for it, but I had it working today It's basically a Raspberry Pi That you put a firmware on it and you can control your printer from there so I can go on a web page and control my printer from just logging on logging into my Raspberry Pi and Then you can do really cool time lapses. You can monitor your print I can monitor my print for my phone and you know it's not a Digikey product This is just something I personally am working on right it just blew my mind for one How easy it is to set up for another how helpful it is and what kind of So you're using a Raspberry Pi as the Octo print and then your printer is plugged into it for controlling over USB And then you're talking to the Octo print from talking to the Raspberry Pi Which is can basically controlling the printer. Yeah. Yeah. Oh, that's excellent. Very cool I had it installed on a printer a few years ago And I since got rid of that printer and I haven't reinstalled it But I should look back into it because I know people people love it Yeah, and it's actually part of the Raspberry Pi OS now when you go to install your OS You can just go through couple options and pick Octo print and it's just It's great. It's too easy. Yeah So it's great. So the the next thing Digikey related which is really cool is I shared this a while back is Our makerspace startup guide and this is now done It is going to print and we're gonna be starting to distribute these and you know send these out to Universities and schools. That's excellent. Basically. This is just a guy that walks you through. How do you set up a maker space? What is involved involved in it any maker space from a very small maker space? You know 500 to 1,000 square feet to a very large one basically a full building full of all the really cool tools soldering stations CNC tools any type of prototyping laser cutters even woodworking So it just kind of goes through and you know, obviously I'm not gonna read this to you guys. It'd be way too much but oh, so you're distributing this as PDFs as well as are you sending this out as print? So boy, we are printing them and we're also gonna have a PDF on digikey.com you know the URL will be digikey.com slash maker space and You know, we'll have that available for people to check out and then Like I said, we'll have a print version that we can give out a different events Such as open source hardware summit, which was a virtual event last week and hopefully one day We can go back to in-person events. Yeah Seeing a lot of you people I'm open the silicon tundra of Minnesota and there's not much here Silicon tundra And so your guide does that cover everything from like small mobile maker workstation types of things that a school might Add up to like inside of a company to a standalone community maker space Yes Everything in between and if we get towards the bottom, you know, this is a tentative layout of what you might Look for in a small maker space. And then actually this is an image of one of them that we have inside digikey Obviously the red kind of sticks out. But then you go into these big ones The the standard maker space and then the mega maker space, you know, this is an entire building You have a lot of room and a lot of Equipment that you need to put in there. So It kind of gives a tentative list of items as well You know, what are you going to need for the workshop for the woodshop for the electronics area? And it's it's a pretty cool guide It's we we try to be as thorough as we could because we really want to help people start maker spaces. Yeah that's great and the timing is good because people will be getting Vaccinated and hopefully back together in person again in the coming months and years So this is a good time to help people out with with setting up a maker space. Very cool That's the goal Well, whoops, sorry mark. I was trying to pull your your share off of there and I added mark's camera It was red. So anything red. I I assume is a digikey thing. Sorry about that All right. Well, thank you so much for stopping in and we'll talk to you again soon. Thanks jp. Take care All right, uh, let's see next up. We've got jeppeler jeppeler. You're the next contestant on hello on I'm good. So if you want to bring up well, actually, I'll show you first I've been working on circuit python driver for these little cameras, which are the ov 7 6 70 They're pretty inexpensive and so far they worked with arguino, but we're going to bring that support over to circuit python So, um, if you want to bring up my screen share I've got kind of a real close in on an lcd And like here's the video you get i'm getting 10 frames per second At 160 by 120 I think and I mean the video quality is fine for what it is I was really surprised and so there's a pull request in to add support to the core of circuit python And then we'll have a library to configure individual cameras Because the next thing we're going to look at is support for a newer style of camera module with a little more capabilities Um Which I don't know if he's joining us tonight, but uh, phil b is doing the heavy lifting on that one And I'm just assembling the pieces, but uh, yeah, that's what I'm up to and it's one of these things that will be in circuit python 7 In the future. That's great. So I'm curious these modules. Uh, first of all, what interface is this running over? You might have said that but I so I didn't uh, these use uh a parallel system So there are eight data pens along here and then about six control pens And uh, basically so it can send eight bits at a time From the camera to the computer because spy would be a little bit slow Um, since it only does one bit at a time And there's a special peripheral to support that on like the samd 51 chips And uh, that's where we started this is working with the grand central like I showed The next microcontroller we're looking at is the pico and there we can do it with the p i o peripheral It's really good at dealing with lots of data and we think we can maybe do it on some other microcontrollers But those are where we're starting at and where do these cameras come from there? There must be some industrial use thing or it's it's a I'm not sure um from the literature this newer one was designed as a cell phone cam If you find the data sheet for the ov 2640 it shows a lovely flip phone And these modules I don't know where they came from But like you can buy five for 15 bucks on Amazon so if you want to experiment with them you do have to do a little bit of surgery you may have noticed There's a guide on the 80 fruit learning system that shows what you need to do to do that But yeah, I had not done cameras before like last week and now circuit python is doing it. So fantastic. That's exciting. Thanks. Jeff All right. We'll see see you next time Uh, all right. Let's see uh next up. We've got Noe and Pedro where'd you go? I was going to bring you on you've disappeared. Okay, uh, erin. How about erin? Are you ready to go? Let's see Hi, erin Hi So I don't know if we're gonna be able to see too well. Um, and my wi-fi is a little weird So if I drop off I apologize, but my project this week is Is a baby mobile. So I'm here in my brand new baby niece's room And I made this, uh mobile out of sunflowers, which is basically made from craft foam on my vinyl cutter It's got see if I can get below it here It's got five active sunflowers using very, uh high density neopixels. Um And it's just really cute and beautiful. She she loves it my little baby niece Um, the other cool thing about this is it is bluetooth controllable. So I'm using the adafruit app here And I can change different modes for the flowers, uh just by pressing the buttons here But the coolest mode is the sound reactive mode So Now when baby cries or mom sings or anything like that the sunflowers Will react to the sound of my voice which is that one is endlessly entertaining for your niece. I'm sure that's really cool I think yeah, she's gonna when she figures out how to how to work this thing We were hoping there's not a lot of screaming How is that, uh Is sound reactive, uh, you have a uh a mic on your microcontroller. That's not the phone and bluetooth, right? That's the the build itself has a mic on it Oh wi-fi is being a pain. Let's see seems like Seems like we'll never know the answer to that That's my guess. I'm gonna guess that uh that she's got a mic on there Uh, all right. Well, hopefully we'll see more about this project because it's beautiful And I think Aaron's working on a guide for it. So we'll uh, we'll see if she if she comes back into the stream We can ask her, uh, but moving on Let's bring on Brent you ready Brent. Here we go. Hi Brent. Hey, John. How are you? Thank you? What's happened? Um, I basically Built a little keyboard You can see it. Sorry about my camera, but I got the little Um, trinky guy Right here when you click a button, you know it Does the little animation I've got an esp 32 in here Uh for wi-fi So if I click it, it'll tell me the temperature. Oh, that's great outside. Oops. Sorry If I do this one, I'm calling into ate a fruit i o to get the temperature on each of the different levels of my house and then There's another one. Can you bring up my uh screen as well? Oh, yeah, let's see. Do you have one shared? Oh, I maybe I don't I'm not sure where to do that Uh, let's see Well, I'll just tell you rather than take up time. Um, I've got slack integration to my company slack as well So I can send slack messages at the click of the button It was initially just to yell at my boss But for show and tell I had it toned down so I could Say something nice in the chat Thoughtful of you Oh, that's great really cool built. So you you said you have a esp 32 Yeah, um, I use the The original uh perma proto um What do you call it? Let me take this part real quick Um, it's like a workout. Yeah And so, yeah hooked up all these and then the new, um What are those boards that just came out like the Keycap feather. Yeah Those I got two of those the individual ones though. Yep. Yeah, those are really nice Yeah, yeah, yeah for sure Great. Oh, well nice build and uh, what's uh, is that written in arduino or circuit python that you have a good python Great python. Oh, very good. Yeah, of course. Yeah So nicely done. Yeah, thanks for sharing that very cool. It's all about mechanical key switches these days They're fun. Nice build and you did something with them a lot of times Uh, some some, you know the fact that you're going to ate a fruit IO and grabbing your temperature That's uh and using a slack integration. That's pretty great. I I end up making keyboards with them, usually HID uh And usb nitty. I do have the most working on this as well. I just switched modes. Um, I just Haven't done too much with it because it's slow and doesn't work that well. So Besides do other things. Yeah, but that's not all very nice. Thanks. We'll see you next time. All right All right, let's see. I think uh, next up. We've got liz Hello, liz Hey, how's it going? Good Um, so I've been working on the robot pooch project Um, so if you want to yeah, uh, so I'm moving the solenoids to cover the holes for the food And then um, we've got this air pump that blows air into it Uh, and so I have a little demo going where you'll hear um, four different notes. Hopefully, so I press this button I press this button I don't know how well that came over but um Nice Illinois going yeah So next will be midi and then I also need to figure out a better power situation because um There's a lot happening here with a couple different breadboards and i'm pulling five volts off a metro because the program using doesn't have The five volts, but I found that even using um a five volt, um can amp posh supply I was not really able to comfortably have three solenoids pressed down at the same time Probably because there's a limit on how much power can go out the pin So once I get that set, then I should be able to get more notes going and then add in the midi functionality Yeah, that's great And then uh, the way that i'm covering the notes is just these little ninja flecks like little nubs Um, that I printed that actually fit over the uh, come on out of focus Or not, uh, it's a little nub that fits over the solenoids fits so then um, it's just kind of squishy because originally I was doing um this kind of Almost like a chain thing. I think I thought I'd be able to press them down Um, but that was probably a problem. So I switched up to this single Simulated fingertips for each uh each solenoid so they get a bit Yeah, oh, that's great. Nice progress on that. Yeah, that's gotta that's gotta chew up a lot of current. Uh, if you're Holding those things down for long. They'll get nice and hot. So yeah, this is probably a little um Excellent nice progress report. Thank you for bringing that on list Thank you. All right. Take care Okay, uh, let's see next up. We've got uh Our good friend Todd bot. Hello Todd She I just I know I just lost my light No, what happened to my light? All right, well, I don't have much light um But but that's okay because most of the things I want to show is on this other camera And uh, let me switch to it. Um So you might remember me showing off this little capacitive touch Thing on the uh on the raspberry pi pico running circuit python. Well, I made a circuit board for it And it Works pretty great Then I can change many channel And so that's uh, that's what I've been working on so far So those are uh, essentially just capacitive touch breakouts for everything on a bunch of pins Exactly. Yeah, this is like this this highlight is one of the best things about the raspberry pi pico Is that it has so many pins and because of the way they've uh the way the circuit python has often been a capacitive touch It's available on pretty much all the pins and so the circuit board is really simple It's just traces going out to copper pads. You can kind of see it from the backlight here and um And uh, and the only the only uh extra circuitry that's needed are one mega ohm resistors that are soldered down on each One so let's see if it'll kind of focus in you can kind of see those those little little surface mount resistors And so I was thinking this is actually a pretty good. Um first There we go first project for if you want to learn how to do surface mount soldering because it's basically all the same component and There's really hardly anything you can do wrong with it Yeah, and you even did this the you're using the castellated pad footprint for surface mount the pico on there as well Exactly. So the so the So the end result is that it's really really thin Which makes it um really puttable in a bag. You can just kind of slip it in. Um to make it a little bit more protective I designed a little uh slide on enclosure for it So you can protect it Um on the bottom and then if oh you want to just stick it in your bag There's also a top Just stick the bag on and now all right, so sorry Just stick the top on and now you're fully enclosed. Just stick it in your book bag. You're ready to go Oh Of course one of the fun aspects of this is it because it is uh Is capacitive sensing just putting your hand over here triggers everything I'm sure Yeah, that's like uh industrial noise mode you just start Yeah, just just bang on this side of the board if you want to cause havoc Uh, and does that uh do a calibration on boot up for the capacitance? So you like you kind of don't want to be touching it when you start it or does that matter exactly that? Yeah, and um and uh, the hilarious thing is is that the the the default In uh Calibration that circuit python does I think assumes a much smaller track size much smaller smaller sensor size Because the default setting was way too sensitive And so when you were trying to play a key over here It would actually trigger keys down at the bottom because there's traces going across kind of under your finger But there's a there's a nice little software hack You can just sort of raise the threshold of the sensitivity of all the pads and then it just works great I was really happy that uh because when I first hooked it up and I was like oh it works Oh, but it's all these false triggers down here But you know just raise it all up and then everything everything works great That's great. And is that a calibration or is that a sensitivity change you had to make in the library or can you do that in code? Just in code. Yeah. Yeah, just at the top and this is all in circuit python The let me see if I can share my screen here real quick Everything is up on github at uh At pico touch github comm slash pico touch slash todd Sorry, sorry Todd bot slash pico touch and um, there's the schematics and there's the gerbers if you want to order from Osh park you can do it there. There's a list of all the materials you need which is three materials the pcb Yeah, and um, and the installation is like pretty simple too. You just install circuit python You install the needed libraries copy over the code up high and you're done Like all this can be done like once you've got it all it takes like five minutes to get running So super awesome Really nicely done. And uh, I also noticed you had movies in line there in your github. That's a new github feature Right. Just drag it mp4 right into the yeah, so this is this is one of the things that uh, if you've ever done a lot of github stuff you might have like we've uh Try to make gifts you can embed in your in your read me so that you can like kind of show videos What's going on and sms because gifts are like bad for that But now github allows you to put movies in your issues in your prs in your read me's and um, I'll get it works again All my mashing made it made it good to a midi channel that I wasn't I wasn't recognizing But uh, just today I implemented I implemented midi chain midi channel change so you can And then different midi channel And then of course house music Excellent all right. Thank you. That's really cool. I want to all right. That's it I'll post the link in the discord discord also. That's awesome Cheers All right, that was way cool. Uh, hey, there's scott. Let's bring scott on. Hi scott. Hello So I thought I would nerd out with you. Um, yeah, I know I can suck you in. I've got a giant box There's a bunch of digi key bags, but in these bags are a bunch of keys Keycaps for different uh keyboard stuff. So signature plastics who makes keycaps. Yeah, they sell grab bags I didn't know they did that. Um from time to time. They're they're a hot ticket I know so you have to subscribe for it, but I picked one up I don't necessarily recommend it Because I like you were saying like I bought it, but I don't really use it Yeah, but I thought I'd show some of those off. So, um, what they what it is is it's it's all sorts of stuff that, um, doesn't pass their quality control. So that's a bad example This is a good example here. So here's a a delay key But you can see that it's like got this black leaking through so it's a double shot key Which means it's two different plastics and you can see it coming out there Um, but it's all sorts of weird Yeah, weird keys like there's this delay key Um, some some keys are not double shot. So here's an example of one that like um Got stuck in the machine or something and had like different Like legends stamped on it repeatedly um, you can see from the back that it's got, um You can't see at least the double shot there um There's let me show one more So I I I tried to separate them out. These are the the deformed ones um And I thought it would be cool to see all the different shapes and colors and stuff Um as a way to try that. So here's here's a weird deformed one Like it it wasn't fully injected or something Um, which is kind of neat. Yeah, looks like someone ran out of plastic Right. Yeah, so I thought you know, these these are perfect for macro Key pads that people have been doing a lot. Um, I haven't actually made one myself But I'll probably pick one up When we have one in the shop. Um, and then I'll finally be able to use Uh, some of these keys, uh to to do something perfect. Oh, that's fun. Yeah And I saw I had some odd odd like two u sizes and oh, yeah, so like here's like a full keyboard key Yeah, here's like base bar, you know backspace or Backspace or shift. Um, I've got them kind of partitions by different things Um, here's like military delete style thing All sorts of stuff So this is so yeah, just just taken out of like one grab bag that I ordered from them And I kind of like split it by color and things like that. So a lot of fun. I'm I'm very excited about that I had no idea that they did that they they're they're a terrific company one of uh, one of our community members, uh Steve and Rika who has been on here a few times with some of his keyboard based Music he had customs Made their little light pipe ones. So they oh nice double shot But one of the shots is a clear plastic, uh, slightly frosted so you can see leds shining through Yeah, they're definitely like, uh Definitely a really reputable reputable company for it. Uh, this is just the ones they don't guarantee Uh, which is kind of neat Thanks for bringing those on Yeah And uh, do you have a show this week? Are you on on friday? I'm on on friday and I've been toasting myself doing micro python merges So for anybody who's wondering our relationship with circuit pythons relationship with micro python I'm sure we'll talk all about it On there. Um, am I the last person? I have one other thing I can uh, we have a couple other people but we also don't have an ask an engineer tonight So I don't mind going long. I always go long when I do show and tell this time. I won't feel bad about it I'll save my other thing. What uh, I I can always come on next week. All right. Sounds good. Thanks so much scott Thanks, John All right, uh, how about stewart. Let's bring stewart on. Hi stewart. Hey, how are you john? I'm doing well. How are you? Okay? Um, I need to share my screen All right, please do uh And I'll bring that on or if you're going to switch your camera go ahead Okay, this is my first time doing a share screen, but can you see? Let's see I don't see it yet. Are you sharing it with the little uh share plus icon down at the bottom? Yes Okay, sharing screen was canceled. Make sure you click share screen. Okay. Just click it again share screen Sometimes your browser will demand that you agree to some settings to allow the share on the model not cancel Uh, maybe I should uh wait and get it together I'm hitting the share screen then it comes up your entire screen I select it and yeah there And it comes up with sharing screen was canceled. Make sure you click share on the model and not cancel Uh, you know what I'll do I can I can pull you off for a second You can try to get it and I'll see if you get that screen up and uh, it might be a system Accessibility permission depending on your operating system where your system has to allow your browser to share a screen So give that a shot. I'll I'll bring you back on All right, uh, let's see how about Michael mica who's been patiently waiting. Hey mica. Hello. So, um, I've been working on a couple things. I'm going to share the um The most complete one first. All right, so you might not a guest, but I'm a teenager and I play minecraft. So I'm normal in that way. Um, but I've oh my god. Oh, I'm sorry. My my cat is I need to get her out of here Um, you can tend to your cat if you need to we're in a hurry. It's fine. Um so I've been working on a minecraft modification or mod for short that lets me control a robot So, um I don't have a real robot to demonstrate it on so you're gonna have to use your maker imaginations, but I'm ready. It It's the concept that matters. So I'm gonna share my screen real quick. All right. Oh my gosh Her name is ida and she's not not normal Um All right, I've got All right, so I've got my discord open here. Um So this is minecraft Pretty normal. Um if I hit escape Well, no if I hit v This and I'm using. Oh, is it messed up on your screen too? Is that just on mine? Uh, it's sort of window in window looking something went strange with a bad driver or some guessing Uh, I'm on an m1 macbook Display drivers are not fixed for that yet Uh Is it uh Well, if I hit v Up here it says make robot friend requester config. I'm using their make robot friend hashtag Okay, because why not? Yep. Um and in base url I can type um Http colon slash slash and this is based on a web Requestor so how it works is I have a block in minecraft And when I use minecrafts kind of wires to switch on That block like to power it Um The block will make an http get request to a web server And that web server can be anything and it can be running on a robot That's cool. So like if you if you use flask it could just move the robot That's excellent one two seven dot zero You can probably guess what i'm doing right now Um, I have this web server. It's just a python http server And if I type oh, I need to put a slash here f b l R and if I hit okay Nothing seems to have happened if I hit us. Um if I open up my inventory now search fwd Can't type today And if I place this down That's a custom block I added that in my modification So now if I take a button Just any any kind of button And I place it right here Watch this wait, uh watch this screen right here. Okay when I press this button It used to work Uh I have no idea what just happened, but what oh, I know um one two seven zero zero zero. Oh it's http I forgot to specify the port Right on sorry No worries. No, hurry. This is really cool And if I type f It makes the request that's awesome. Ha ha really cool. So you've created this mod yourself from scratch um Yes, and no I use software to make it because I'm lazy For sure for sure. Yeah, and because java I'm gonna be perfectly honest. It's it's not it's not pleasant. It's Java not cool um So It also works for If I just search block because all of them have block in it. It's got all these So if I can I can put these in my hotbar and I can place them around I'm I was thinking that because basically right You've made a big joy stick essentially for driving your robot Yeah, and the whole thing is you can integrate this with any redstone contraption redstone is like minecraft's wires. Um And you can link this up to anything because it uses default minecraft stuff. It's no weird It has to be a player interaction. Right. Oh, that's great. That's really cool. One thought I had is I've been playing around with uh these Uh lifex brand rgb light bulbs their wi-fi light bulbs. And so they can uh receive http Curl command so imagine you could have real world light bulbs that react to what you're doing inside of uh minecraft with with the control scheme you've built Yeah, it there's a lot of things you can do with http requests, although There's a lot of things you can't do with them Mm-hmm Can we just take a moment to appreciate how html is a language that can make http requests, but doesn't have variables Um, I'm gonna I'm gonna uh, ask you if you have more to show come on again Next week because I want to keep moving along so we can all right people on thank you so much All right. Bye. Bye. Bye Very cool. Uh, all right. Hey john proctor. You ready because here we go. Hi I am ready. How are you tonight? Good. Thank you. What's happening? So I want to talk about um leds and computer cases. All right I love leds, but I don't want to be just blinky. So I have um a bunch of these neopixel jewels in my computer case and let me I have four uh temperature sensors um, there are these uh one wire temperature sensors in there and they're all hooked up to uh pin five um on um On on the board that I have in there and So I have the let me switch over to this Inside my computer. There's different. Um There there's four different zones where it's a sensing temperature. There's an air intake up top There's the bottom of the radiator um Ambient air temperature inside the case and then the gpu um exhaust out on this side And so you can see this uh, this one up here is is yellow right now And if we had a heating event, this is just to simulate that Um, I like that heating event slow to respond But but this sensor will heat up and now it's turning red inside the case So um, I've got this on a uh on a board plugged into an internal usb device So it's always just showing me the temperatures inside the case. That's great. Yeah, so that's a really cool. Yeah It's a really cool visualizer for what's happening. Yeah in in the real physical space. That's really cool. Yep And then since uh since everyone seems to be doing uh keyboards. Um, I've got a little uh My pico and a little keyboard going and right now I've got it set up as a midi Um, so I'm working on a midi and a macro keyboard on I'm you know, always working more hardware. I want to do a second version of that circuit board to get it working Really cool. And uh, so john for the uh computer case you have a Microcontroller in there that you said is plugged into the usb for power and it's it's what's running the um temperature sensors and the neopixels that how that's built. Yeah Very cool. Nicely done. That's a that's a practical use of all this stuff. I love it Yeah, it's a fun way to see what's going on inside the case and um It reports the temperatures out and you can see like there's a 14 degree temperature difference going across the radiator Um, so that's you know, it's always interesting to see how effective they are and what's going on Oh, and I just realized you probably can Code it anytime you want from that computer because it's always plugged in as a Yep Bit of a problem because I've got For microcontrollers plugged in right that's why I always have to figure out which one I'm going to Yes, this happens to me a lot actually where I'm like, oh gosh, what did I just save code dot pi two? Maybe it wasn't the one I thought I meant to Well, I'll give you a hint. I I put like temperature control dot pi Yeah, so when I when I go save as I can go figure out or open I there's something there to give you a hint Control you're on. Yeah, that's smart. And you can also rename. It doesn't have to be named circuit Uh, uh, see python drive the the circuit python drive you can rename that drive Which sometimes is a is a help sometimes you aren't paying attention like me and you forget Uh, but uh, yeah, very nicely done. Thanks for for bringing those on. Appreciate it. You bet But All right, let's uh, let's check back in with stewart and see if uh, you've had any success with some screen share Okay, yeah, I believe so. Can you see the screen? Let's see I still don't see a separate screen showing up to share. Okay, hold on. Let me do this And what about no still same things coming up? rats Yeah, um, maybe I'll join next week Okay, what are you working on? What's your what's your project if you can describe it? Well, I it's it's at the office. I built it last year and uh, it's like a periscope Uh, I interfaced a microcontroller with a nexian display that talks two ways to the controller And I have a 360 degree pri on the other side of the cubicle. It hangs on the cubicle and it's a a reverse car Video and I have a camera that escalates up and then my the video is by my computer And as people walk by I have a neon A neopixel on there and the next on display has a Has a password a punch in the password because you can make menus and once I open it I I have a menu for my neopixel in my motor where I can test it and press it and but um, yeah, I'll try to Um Good now. Well, I'm glad you've described it though because now we have some anticipation for when we get to see this That sounds amazing Thanks, steward. Okay, we'll see you next time. Okay, no problem. Oh That sounds cool. I can't wait to see that. Uh, all right. Let's bring on danon Hello Hey, how you doing? I'm well. How are you? Oh, not too bad. Did you have a good trip to new york city? I can see that you're an Eight of when you're in the food factory. I think or In the workshop, maybe Oh technical difficulties. Hey, um Um, I wanted to give a quick shout out if I could to dan H uh dan and the brothers did a Was it getting started with circuit python back on circuit python day in 2020? Great video. I was enjoying that before this and yeah, excellent lost alone. I'm actually going to go back and Find find my cpx and then like work along with them But when I came on to show I I lucked out and I managed to cross An electric bike on facebook Had a decent price But it only has a seven and a half amp battery and I'm like 250 pounds. So it doesn't get me too far So I uh lucked out and I came across a bunch of rayobi lawnmowers And so I have a few batteries to work with so I thought I'd do a mobile charger And I'm no engineer or whatever. So if anybody on discord has to tell me I'm like Shouldn't do that. That's going to explode. I'd appreciate getting that's a good. Yeah, that's a maybe a good one to run by people. Sure Um, but it it sounds to me in theory But yeah, it'll uh Just whoops and of course live dough Anyways Well, okay battery goes in that far And then plugs in charges the bike While it either while it's in motion or when I'm at a store, obviously when I'm at a store I can shut it off and charge it um, but yeah, and also another thank you to the uh, was it um Holy vague I'll pick up my mouth later Another thank you to the brothers when they were playing with Arrays, I uh went and picked up one of my own And this I'm going to try I don't know what I'm going to do as far as waterproofing or whatnot But I thought it would make Oh, do you really? Big old tail light. Yeah, that's smart Be all from the side as well. So helpful for cars The whole thing not wanting to get run over, you know, silly little request, but Yeah, I used to uh I used to I was fortunate enough to be able to ride my bicycle to work uh here when I worked at disney animation and I Think the very first thing I ever bought from ate a fruit was the Spokes the led spoke Persistence of vision thing to put on my wheels so that cars wouldn't hit me from the side because I was riding home at night But that was like maybe the very first ate a fruit thing I ever got That was awesome. Yeah, that was such an awesome kid. I love that Yeah, yeah, I had a batman. I had the batman logo on my front wheel and just like flashing red on the back or something like that Nice Riding in style. That's right. Well, very cool. Yeah, we're looking forward to seeing that and uh, Definitely use the the resources of uh of the discord ate a fruit discord to uh to run High power charging things by them Well, because the voltage the voltage on the on the uh, riobe batteries, they're 40 volts and the charging The stock charger for the bike is 42.3 So it's not a big step Right, so I don't know. I just didn't know like if they're like the whole wave signals and all of that Funkiness that I honestly have no clue about I didn't know if there was anything in that realm. That's like To throw up some red flags or whatever, but yeah, well, it'll be it'll be a learning experience for sure This is true Experience it blows up and smoke Yeah, yeah, and even that's a learning experience. All right. Well, thank you so much dannon We'll uh, we'll look forward to seeing some of that progress next time Excellent. Have a great one. Thank you. All right. Uh, we've got uh, ariel who's been waiting patiently in the wings here. Hello Ariel, how are you? It's ariel, but ariel. Hi ariel um, so i'm a first year engineering student and uh for our final project because semester is just ending Uh, we had to help this woman out who had um, a couple disabilities and she couldn't really move but she really liked to paint So, um, I took an rp 2040 which is in there and some l tune nine eight n motor drivers Um and made this little flip But here let me turn that on and then you can see As you move. Oh, it's green. So it's messing it up But as you move this we move this thing and then here You press it and it goes down Press it and it goes up. Let me reconnect my headphones one side Which one is this left? Live demos these things happen. These things happen. Yeah live demos. Okay. There you go. I can hear you now. All right Um, but yeah, that was my final and that's terrific. Yeah So you have uh joystick control motor driver and uh x y axis as well as an actuator for uh Sort of brush down. Yeah on on Thingiverse the person who designed the actual like mechanism of the paint plotter His name was diy machines. I think so check him out. All right, but uh, but yeah, no So she she doesn't like to like grip things. So we built this uh joystick. Uh, this custom 3d printed in green by Um, yeah, so I just turned it on to like one of those casino style. Uh, or not, you know, what am I saying? arcade Yeah arcade style joysticks, which just has like a screw and then you can put your hand in it so you don't have to hold it Yeah, nice Yeah, we give us another demo. I'll I'll pull your full screen and if you can uh, okay so Here so as you so you put your hand in And then you move it and let's say I want Then it paints so right now there's hardened paint on the end, but Yeah, so you just move it around However you want you can move it on angles. It's an eight axis. It's not uh, infinity axis not an analog But it still works Uh, and then yeah, you can just turn it That's the whole thing I posted a youtube video for it. We made a funny little pitch Unshow and tell a while back. Oh, that's great. Uh, and someone asked in the chat, uh about loading the brush Do you set like little paint pots off to the side? Maybe so you can go and So so we we were wondering about that and we were like so we only had six weeks to do this Which is a very uh, short amount of time relatively So you could have added like just like paint here and then it can just kind of run into the paint We had ideas for that but in the end we needed to just finish it and make something So, um, what we said was when you're painting you have like a little Kind of like thing to grab paint out of if it's like a really deep, uh Like here before I have it right here one second So this is too deep to grab with like a paint brush So use this little tool just to like stick it in and grab the paint So what you can do stick it in grab the paint rotate it to the side and then just put it on And then just turn it back Nicely done. Thanks for sharing that ariel Yeah And if people want to find out more about it or check out your youtube video pitch Uh, where would you put a link in the chat? Sure. Sure. I'll put uh, it's on show and tell. Um, But here I'll put the youtube video And the github is in the description for all like the cat and everything Super. Oh, there we go. It's over in the discord chat for anyone who's wondering Thank you so much. We'll see you next time. Thank you Uh, all right and mark, uh, I think you're gonna be uh playing us off here. Hello. Hello Yeah, just a small update on the Show and tell badge I showed last week. I finally got revision two Where I actually had the correct pad placement for the imu I've never Soldered anything this small before and I put the lego piece on there just to show all my friends what I was talking about I'm actually remarkably surprised. This is now working after I put it through the toaster oven numerous times to both try to solder it back and to remove it to remove bridges and Um, one thing I'm discovering that I really should just buy as a hot air gun um to work on small areas without having to fry everything but I figured at this point it's there and If I I love the lego stud for scale. That's excellent And a one by one lego stud works so well because everyone knows how small those are And then I think that really got it and then I was telling them it's like and there's 16 pads on the bottom of that thing Um, where is where I'm discovering I'm older now I needed to find a old magnifying headset that my dad had In the basement and that's I hear you invaluable But the best part is when I actually hooked it all up I'm actually getting sensor data from it and If I move it around the gyroscope is responding Uh, this I finished in circuit by thon literally 15 minutes before show and tell started well That's all great thing. So, uh, yeah, I still have to actually write a driver and make it work better than it is, but Um, yeah Great comes along Can we uh, was that a photo or do you have a camera? You can show us the badge with was that a still? It was my camera, but I think it's disconnected. So this is the bad badge that I've been working on um If I flip to this view Oh This webcam is not nearly as good as the slr. I've got going. Uh, yeah, so this was the previous version that I showed last week um I will still need another revision as these header pins were Not quite Far enough or sorry not quite close enough together and that's exactly what I did. I kept telling myself I need to bring them closer. They're too far away. So when I went in to change it I promptly made them farther away because it's the last thing I said in my head So Yeah, didn't help my uh cause error and I figured I'd probably mess something else up but uh, yeah The fact I finally got uh a chip that I never thought I'd be able to get attached to anything. Yeah, that's impressive. Nicely done All right. Well, thanks for sharing your progress and uh, we'll see you with uh some more on that next time. I hope Thanks a lot. All right. Uh, all right. Well, that's gonna do it for us. Thanks everyone for joining and uh Thanks for sticking with us. This was a long one because why not? Uh, there's there's a ask an engineer happening tomorrow night rather than tonight So we have a little bit of free air space here. So uh, we took it up with some cool projects Thank you everyone and we will see you next time and be sure to tune in tomorrow at one o'clock pacific for o'clock eastern time for my jumpharks workshop show and then at uh, I believe it's going to be eight o'clock eastern for ask an engineer But check our blog for details. Uh, all right. Well, thank you everyone. Bye. Bye