 All right, lady. What is this? Hey everybody and Welcome to show and tell is that time half an hour of the internet's most interesting and beautiful Makers hackers engineers and more come by and show you what they're working on We'd love to see it. That's some people from eight foot community We got some people in the outside community. Come on by we're here for another 30 minutes or so I just come to buy the stream yard. We got a couple slots open gonna kick it off first up with Kevin from digikey Hey, hey I was gone. Good. It's going good. How's the eight of her factory walking out air condition? Good. We have I'll say this live on the air We we're working on our next eight of box Kevin and we're gonna send over so digikey gets a sneak peek everybody So you'll you'll have something very the benefits of working. Yeah. Yeah, you'll or eight of fruit and Our both and we'll send over some stuff soon. I think you're gonna really like it I'm excited to see it. I can't wait for the next eight of box a lot of fun I don't know how you guys seem to do better each time. So that's right looking forward to it So I'm working on uh sensors expo demos and I decided to use This co2 sensor that you guys carry this thing is great And it's starting to look like the air quality in my office is not that great. Oh, yeah So seconds ago, it was good in here. So I don't know. Maybe the sensor needs to be calibrated But well, you could be breathing on it if you just held it up to your face It could be I I came in kind of late to uh, you guys probably noticed I came in last minute. I was Literally running down here. So that could be why yeah Well, this also might just be a good indicator of maybe something else. So I don't know follow through on this, man Yeah 400 500 Cool. Yeah, I'll bring it upstairs. Actually, I know upstairs is way better. Well, maybe that's a second here Yeah, if you guys don't see any tweets from me for a while, maybe you want to check in No, all is good. All is good. I know this is look there's a reason why like the sensor You know if you buy the sensor and it says your air quality is great You didn't you know, you didn't learn anything now you learn something which is um, maybe put a fan or some get some more air circulation going on in there Um, especially in the winter, you know when the when the doors and windows are closed more It's going to be very handy. You want to keep that kevin bring top notch condition? That's right and printing with uh abs is probably another thing that isn't good 3d printing. Yeah, yeah, yeah All right, cool. I think this is a really good project for you. Yeah good I think I need to do some some figuring out here. All right. Thank you. All right I'll give it in. Um, we will probably be sending you a thing about a box in the next few days Looking forward to it. All right next up trev Updates, what's up? What's up? So this is what I got going on. All right. So right now. Let me share my screen real quick Uh, share screen I'm not use this. Here we go All right. Can you see that? Yep. Yeah, awesome. All right. So this is our pie leaf app In motion. So basically what pie leaf is it lists our It's an a list our um device enable guides So right here the first stop is basically just transferring using the glider transfer service. That's in our that that's It's another after we're also putting together We're using that transfer service to just transfer files over to your hardware So this is an action right here. It's pairing Let's see. There it is Very complete All right Live demo live demo. There we go now. We're gonna press that So that's gonna download the bundle. Okay And now we're gonna transfer with the rainbows And bam Amazing wireless programming. There we go. Future is here. The future is now. That's right now. Nice work trev Cool. So we're gonna be showing this off on ask an engineer and uh, we'll have some more previews The internal team is currently in uh test flight mode, which is um, you know, we're testing all this If you want to see a preview of some of the type of things you can go to our learn system And we have the device enable guides, which uh, will be Ones that easily allow you to get code almost instantly. In fact, we're going to get in trouble for it being too easy That's fine. Um, but we really want someone just be able to pick up their phone user blue fruit and within a few seconds, uh Have rainbows or have whatever whatever whatever thing they see on their screen that they want to do It downloads it and moves it over all without doing anything. So as easy as Circuit python with dragging dropping code On a drive. This is as easy as maybe turning on your phone. That's right. It's gonna be, uh, Totally wireless reprogrammability. It's gonna be it's gonna be great for people who don't have access to a phone Or don't have a sorry don't have access to a computer. Um, I want a program on the go So we're going to be doing more and more of that also let you um connect to some of uh, our usb less microcontrollers Yes, all right. Thanks ref. So that is and trev's live demo. Thank you trev desk All right, next up. Let's go to no Pedro Welcome to the other side of show and tell I know I was gonna say we haven't been on this side in a while The other thing That the pi leaps gonna do for us in terms of design is make our designs where we don't have to route a usb Cable like around and like have to do like all these 90 degree like turns and then like things into our design So, I can't wait. Oh my gosh. I'm like so Fanboy and ian over here. It's going to happen. Okay. What are you all up to? Yeah, so this week we got a video out. We'll have a learn guide out soon on cnc milling some keycaps So I have a couple different flavors of wood here and a couple of different boards. We have the one by four and the macro pad Um, so it's it's a two-part kind of thing for cnc milling So this is like what it looks like when I do the first operations Which is making the internals of the keycaps of making this requires a couple different tool a couple different, uh, Flat and mills. So what I had to do was to figure out, okay So I got this piece now How do I turn this into this with all the concave and all the drafted angles? So what needed to happen was to create a custom fixture that we can adhere to the spoil board And it has all the same geometries, uh as this Except without that little cross there because we really don't need it So the the thing here is you press these in and then with some strips of tape you can Secure several of these in the fixture and then have this set up And then you have uh an alignment bracket that you can set up so you can have The origins all cleared out and then you can mill out these tops So I walk through the whole this is the challenge, you know, a lot of cnc is Fixed string and jigging and I think that it absolutely is that this is cool that you actually showed You know the process of the process. This is the really hard part That's what this is what takes it from like you did one by accident that kind of sort of worked out to It's a reproducible Project and you can actually learn something from it. So good work on this one. I think this is really This is basically like a year's worth of machinist education 110 So yeah, definitely check out the video if you haven't already and I hope folks make it with their desktop mills and seeing a lot of new Mills on the market. They're more affordable and the software for them are getting better And now you can always pick up a free version of fusion 360 Do some cam stuff or just the step files that has like sort of the recipe on how to recreate all of the Operations are going to be yeah, it should be applicable across all the CAD packages. But yeah, all right. Love it this week stuff Thanks, Pedro. We'll show that video on ask engineer All right next up and and what are you working on? um A quick work in progress The macro pad is a really nice thing for like a phone keypad where you you know the numbers on them But in security if somebody can see which buttons you're pressing Um, they can read it can be reproduced or you know If you use one key more than another that starts to wear down So in high security applications, what you want is something that randomizes which keys you have to press and the Industry standard is called a hearse scramble pad where the numbers all scramble and then you enter in But uh, we don't have quite the hardware here. So I'm developing one where you press a button and The keys the key sequence is here on the display. Sorry. It's a little bit bright and um And so you enter in your your your pin code with the numbers in the sequence They are here and if it works then you can trigger all kinds of things I'm looking at a solenoid to open a door But you can also send digital signals to another board or something like that. So, um, This will be done. Um later this week. Um, it'll be in the there'll be a quick learn guide and, uh, you can check it out All right. Nice work, Anne bringing state level security to make community right Thanks so much. All right. Thanks Anne. Uh jeb lurer mixed up Good evening. What'd you get going on? I have some 3d prints to show off tonight So a couple of different things that I've shared around on discord already and I'll put links in the live chat But I love the silicone covered stranded wire, but it just flops everywhere. So I made this little Holder it snaps in and then you feed the wire out through the little, uh Hole here and you can kind of pull it out as you need it. So fun little one Next up I don't think I showed these on show and tell before these are a 3d printed key cap That really lets the light shine through And also lets you see the uh the background a little more. This is uh based on an idea. I saw on twitter, but it's my own design But then the one I'm most excited about Is this is similar to what I think jp showed where you can go to a website and design your keyboard layout But I took mine and did it as a truly hand wired Keyboard with a feather. I think this is the feather m4 can because it's what I had But it's not that much work to wire up the keyboard with the diodes And so it's basically 3d printed and then just a few Few cards and you can go wild with the keyboard layout, which is what I wanted to show here This is the inverted t. But then what is all this stuff? It's whatever you imagine you want it to be I kind of like it. It's it's a very um esoteric looking. Yes Yeah, it's like one of the alien keyboards from star check generation. Yeah, it's a go if you have like 10 fingers on one hand Yeah, I thought maybe with the inverted t and then like I don't know the top button could be duck and and all those other things But it's not super ergo ergo. Yeah now make No, it's supposed to look cool Well, it looks really cool and it's purple. Thanks. Yeah, we're uh come by jebler. All right. Yeah, shout out to josh for giving me the purple filament All right, thanks. Yeah All right next up. Liz from Hey, Liz right in prayer time. Yes so, um, I Met my synth shelf um and I followed a tutorial that the aflour has on how she designed her big honking button Should do a gate in circuit So that then you can basically have your rock signals communicating with Microcontrollers so in this case a feather and four. Uh, so it's happening when I start up my sequencer Every time there's a gate input the party pair triggers and you can hear what it's sounding like So um and I had the idea to do that after uh, nah, and I talked about um from the um Kitty um paw keypad where every time uh, you press one of the buttons advances Also, I was like quote you had a gate in with your rack then you could have like a fun little Thing going so I'm hoping to maybe do like almost like a feather wing kind of board And be able to mount it into uh my um my rack um have like kind of a little novelty module Okay, it's hot since summer Yes, for sure All right. Thanks, Liz. Thanks so much, Liz. I always love how you combine music and party parrots in this group really I think every year we actually have like a party parrot module. So I'll just party parrot. All right next up Andy Hello, Andy, what you got going on? No pressure, but you got all that up How you doing, uh I'm gonna try to share my screen Here we go prototype of An evolution to the coin Oh nice make decisions for you. Uh, it's got a hundred neopixels around the edge and A keyboard button Yeah, and then you press a button and it will spin and wherever it lands up here at the top. That's who wins It's a blue one But then the killer feature is this is a passive touch on the edge So if you want to buy And get to blue Yeah, touch where you want it and then you can Spin it I like that because you're like, uh, I like 75 percent of the time I want Thai food But I'm also kind of thinking about a burrito, but only like 20 you can then have it Uh bias choose what food you're going to eat tonight. Exactly. And love that ever since uh Yeah, y'all came out with the mag tag with the magnets. I just I love that idea of having something on a fridge So yeah, this guy has some magnets on the back And it's a really good idea to put on a fridge because like what should I eat? Well? Yeah, let this thing I love the capacitive touch thing. That's that's cool. Good idea Well, is he uh closer to finishing up and everything? Let us know. We'll post about it and all that Yeah, send over send over some photos. We're easy to get hold of I'll publish it up And my email's ptdataver.com. Thank you All right next up Chelsea and carl. Hey, what you got going on? Hey, hi, I'm carl Hello, hi, um, we're we joined last week for the first time and then we had a wi-fi problem So we're back to finish what you look right now. We're here every week. Good work. Yeah Yeah, we love that Chelsea is my summer intern. We work at a small semiconductor company in california And last week we forgot to say the name. It's kinetic technologies And uh, we started a line of rgb led drivers And those products, uh, we have evaluation boards And so this is a demo be the intern Oh, yeah, so this is a 12. She said meeting adjourn. She can't see that. No, no, I said I said Show us the demo because you're the intern. Oh, okay. Yeah, sure You can't really show because the lighting. No, I see it. It's swirling. That's cool. Yeah So this one is programmed with the feather rp 2040 And we use micro python to program it. Cool. Here's us. We have a We have a small bar. This is a third of the other chip and it does What is this the cutie pie board? Yeah, it uses the cutie pie board and that one uses the arduino ide Right and we're converting all our boards to use the stem connector Um And this is this is your summer internship. Chelsea. Yeah, are you going to school nearby? Um, I'm going to davis. So it's like pretty close to where I'm from All right Davis but my daughter went to davis. You've got some great experience. You actually got to build hardware and write code Yeah, it's a great. It's a great mesh for learning about engineering at school Yeah All right. We did great. Are you in our different chats and discord and all that where you can put a link to The company and the dev kits and all that last week during this call We said the name and somebody after we had lost wi-fi was still a chat and somebody you put a link to our Well, and to mauser where they we sell one of our ev boards But we're going to upgrade that board eventually right now That's using a micro python board and we want to change it to using a cutie pie They're more available cheaper And that has the better connector on it And then there's a couple things we would love it if you guys would do projects with our our led drivers because Really need advantages. I I know i'm familiar with some of the things you've done in the past and so we um We use charlie plexing to do these rgb drivers And we've divided into four four three four wire buses and so the three four wire buses Run at 25 percent duty cycle per rgb with the charlie plexing and that lets us Hit the 25 milliamps with 100 milliamp peak which is key Because then we can get full brightness while charlie plexing And then and it reduces the pc board layers for most one thing i'd say is um, definitely put the links in the chat and uh, if you're looking for Uh projects to just see how your stuff Uh could Be part of like some of the aid of fruit projects we do Look at some of the neopixel guides and some of the things that we've done in the past and then just see like Oh, can we could we remake it with our stuff? And if you can then it's like, all right, this is this is now getting closer to things that Correct that we might um or actually the people out there the audience and the community will want to remake so check those out Yeah, we've we've been looking at a lot of that stuff. That's a treasure trove You guys are awesome There's 2,500 something guides. Yeah, all right. Well, thank you so much. I'll see you carl. All right. Thank you Bye. Bye. All right next up Gustav Gustav Hello, what's going on? Hi everybody. Hi first time i'm crawling in today. So that's good to see you Hi, um, I made a uh board game timer remote control so i've developed a um A uh a board game timer and i'm just connecting it up to the Thing now, so let me move the camera so you can see when i'm done so This here is my board game timer and i made a little game here with three people gus adabot and lady adab And i want to give my users a way to put the screens away and then be able to Do things like end the turn and so on we have a remote control So i used to went bluetooth standard to connect these two if i press both of these buttons together That should work Lie demo here. Yeah, so it's bluetooth is like that. Oh, yeah, it's all right So is it yeah, we connect it Yeah, I was just about oh, it's not connected. Okay, so this is the connection process. I can show you that can you see this Yeah, yeah, yeah So i made it so it can connect to anything So this is just one of the things it can connect with but it's got a really flexible open way that it connects with things um, so Here's all the commands that the remote control can send to the game And if I say connect now And pair Now hopefully when I press both buttons Oh, shoot. Why is this not working? It's okay. It's a live demo. How about we'll we'll go to uh, someone else will come back and you can It's totally live demo Can either come back or you can also come back next week whatever it is. Yeah, all right. We'll stop by Okay, so let's go to so we pre-recorded our All right, we're gonna go to How's it going, Seth? Hey, I'm back again. So can you hear me? Yes? Yes? All right, great. So I uh, last time I was on I shared a little rgb matrix with the esp 32 S2 that I was making and I thought the rp 2040 was a great Ship to uh to throw on one of these because it's cheap and you know, it's basically the high-end rgb driver if you want it to be so I made a version with The rp 2040 I threw two little stem of connectors on there and everything so It just creates kind of like a cool little way that you can Um, you know set up a little like monitoring so like if you have like environmental sensors you can You know do easy indicating and you know as I showed you can like write text on it too Um, so that was one cool thing that I'm working on. Um, spring into my shop And then uh, another thing I made was this little board I made it during the board tour like Over the course of the whole video I designed the board I remember you're saying that you're like I'm walking boards making boards while I'm walking boards and making boards So this one is um, it's a bread 2040. So I didn't know what else to call it. It seemed like a funny name. So It does basically everything the um That you can get out of the pico except you get your neopixel and you actually get your Uh reset button and everything and you know fits, you know very similar With as some of the uh the feathers so it's not, you know, feather compatible But you know, it sits in a breadboard pretty well and it's got everything broken out very easily So you don't have to worry about soldering any like weird headers go in different directions. So Looks great Yeah, and it worked the first time so I was very proud of myself on that one So I'll post a link in the chat for people to to check out your board tour video so I can see it Well, no the um, it was watching our board tour video to your yeah post a link to your shop and everything Um, I know sometimes folks come on with their stuff and they're like, oh, I didn't want to I didn't want to say what my story was or post anything because that's spammy. No Not here and not for this. So yeah, please do let everyone know what you're working on and thanks for being part of the Uh various ecosystems that we've been putting out there Yeah, and they're all circuit pipeline compatible. So it's just you know adding more boards that people can You know get going. Yeah, right on. All right. Thank you so much. Thank you, sir All right. All right. Gustavo. You want you want to try again? Okay, go quick and then we're gonna All right, so um, if I press both buttons at the same time, I'm gonna unforce the game So now whoops, uh, it's gossips turn and he's currently in his fourth minute So as the time clocks up The lights turn on showing him how much time is taken The whole point of a game time is to encourage people to take less time To hurry up because you can spend too much time. So if I press one button It goes to adabot And then adabot if she wants to pass her round she can press the b button Next up lady adab and then if uh, he regretted having passed this round and he wants to Undo he can Shake the remote control. I like the shake to undo. That's nice. Yeah And then if uh, they start arguing about rules, they can go into admin time by the switch And then it's not It's not measuring anyone's time. I like I like using all the little user interfaces, but very intuitively Yeah, and so what I just want really quick here Just to say I I don't do I'm not a maker like I'm not really a part of your community I'm a software engineer and I make web apps But for me discovering this that with web bluetooth I can reach outside of the app and make physical things happen Is amazing. It just opens up a whole new world. I can I love web bluetooth and web usb I think it's really I I think it's underrated people don't understand how amazing it is that we now have A platform agnostic way to connect to hardware. It's always been a hellscape It's so cool. I I made it. I started this as a joke. I was I had this little Teddy bear a vibrating teddy bear and I thought I would put it next to the game table And when it's my turn the teddy bear would shake So I made that and then I thought oh, I wanted to make it a remote control And that's how I found you guys and and made this so I'm I'm now obsessive about this Well, thanks for sharing that story because when we when we talk about the things we want to do you just kind of summarized Years of work to make it easy for people just to do the things that they Have ideas like oh, let's see that teddy bear I'm gonna have it do this and now you can glue all those things together You know enough about coding and now you have a physical thing that can happen with The bits of code that you and circuit python being able to like it's code. I can do code. It's amazing I'm I'm I'm hopefully I'll be on here showing other It's a really cool project love it Once if anyone if anyone listening is into board games and want to collaborate with me playing around with the game timer and Hardware stuff. Just reach out to me. Oh cool. Yeah, go down to discord. I'm sure there's tons of game players there Right. Well, thank you so much. All right. Last one at least steward always bringing in the cool tranix What are you up to steward? Hey, how are you? Hey, hey, can you hear me? Yeah. Yeah, go go for it. Okay. Okay. I need to share my screen because it's already hooked up. So Okay, can you see that? Yeah So so what it is is I have a glow forge upstairs You know with the big button So what you have to do you have to go up turn it on put the material and then come back down I have to come back downstairs Put the you know put the design shoot it up to the glow for is not to go back up To press the button. So what I did was I used this the large solenoid here And I created a case for it For the So it can press the button And I also created a web interface for so I could do it remotely over wi-fi in the house And so what it is is there's magnets in here here And I had the laser this so it fits right nice and tight around the button Those are the measurements here. There's magnets here magnets here So it's secured like that onto that so Then here When I was testing the button I had to put a rubber bumper on it because the the solenoid was too hard. You can't adjust it So I put a rubber to gently push the button so now So what what I have now is that I can remotely control over web The web interface for that And then there's the solenoid And I press the button here It automatically hits that and then the job starts on the The glow forge good work. Now we'll have to keep running upstairs back and forth Awesome right on Well, congrats here This is like one of the many like iot devices that we always talk about like there's Oh, I just want to get an alert when like the basement floods Oh, I just want to turn this thing on instead of going upstairs and like you can finally make all these things Um, and it'll actually work. Yep. All right. Great job. Sure. I love I love the uh, the hacking spirit you bring to everything Thanks, I can't wait to see the evolution. I was like, I don't want to walk over there and turn off the light switch Yeah, you have something new every week too. I'm always all right. We'll see you maybe next week or in the future, sir All right, thanks to our Oh, yeah, it's every every day is halloween. All right, everybody. That's show and tell thank you everybody for making this the best Happen hour of the week every single week for us. We're here Every wednesday at some 30 p.m. Eastern time. We'll see everybody next week. That's gonna engineer starts in like one minute Bye everybody. Bye. Bye