 Hello everybody and welcome to show and tell What are we doing for the next half an hour? Good question? Well, we're gonna hang out and sit here and all these cool people from the maker community and a for commuter gonna come by with their 3d printing They're sovereign their synthesizers their IOT platforms and Pixel circuit forward pixel art and more and they're gonna show up to us and other people can show up Because this is our show and tell where anyone can join. We're gonna be here for the next 25 minutes checking in with folks First up is gonna be Jay. Jay, what you guys thinking this week? Hey, Jeff and did you key? I finally finished my new pair of glasses. They just got done How it's still warm from the printer. Yes, you're very still warm all pretty from all the layer lines The iris works pretty much better than the last pair which makes me happy And then of course you have the actual working functioning. I which is pretty good as well I can kind of see a little bit I'm trying to get the camera a little bit the micro the This stuff you can see where you can actually use these and I am happy with them I have to add a resistor to this motor speed, but other than that design wise They're wonderful and now I am going to be working on a smaller version That's gonna be more of a monocle for people to make at home I just have to figure out what components to use for that one, but at the end of the day I am very happy with these I'm gonna tell everybody that these are the new Apple augmented reality goggles Because these are actually lighter than the last pair I had Which is like I guess I figured out math and science a lot better to make Because they actually feel a lot better. Don't fall off my face. Yeah Yeah, you can carry a lot on your head like I've had like heavy headsets and like VR stuff You could get away with a lot, but eventually it's like it like you'll leave marks or it gets hot Because I use plastic frames not the metal frames the last one I kept being stuck in my hair plastic frames a lot better from I know this But I still need to test them out for at least a week and then mark the good and the bad before going It's a full-on like All right, let me cat out a pair of glasses type of situation. Yeah, that's great All right, so folks want to learn more about these buildings or do something with these one day What's their what's their go? Where are they you can find me on Twitter, of course But also look keep my own digickey and our make die-oh because that's where I publish all my work now Okay. All right. Well, thanks so much and come back as you refine this design And I'm looking forward to waiting in line for these at the Apple store Next and what you get going on this week. Hi everybody. I think I've teased on the interweb And I released a guide finally on making a PCB jewelry. I can't These look like little floppy disks and they they're made with Oshpart purple PCBs and but If somebody's more nostalgic for black or even pink, you know, they can send it off to their favorite Ford shop The all let's see most of the software is is open source and One is a trial where so it uses a winter blooms gingerbread website, which is free and that converts your vector art into Kikad Footprints which you can just paste in and then That generates all the art files that the board Place will want to make them so you just send off and you get several copies of your Your circuit board and you can make floppies or you can make almost anything you can think of Just thinking about layering different Parts of the PCB and making that the various colors in your design All right And it's so iconic you can tell you know exactly what it is for the young ins is to save icon But for you know, everyone else that's like well, they look great and there's more to come Definitely, there's more PCBs to keep an eye out on the learning system. Okay. Yeah We'll be talking about tonight on ask an engineer. All right. Oh, thanks. Thank you and all right next up I think we're gonna go to Lauren Lauren you want to Show your demo absolutely Everybody say hi to Lauren Would you yeah? Yeah, I came to show off some a new firmware installer that we've got live on I own now So I've got myself a nice No, Lauren Laura so I just want to introduce Lauren cuz Lauren's a to fruit team member We have a lot of a to free team members on here Lauren's one of the folks who's been working on whippersnapper and a to fruit IO, which has been going absolutely great We just had a ton of people visit a different and they're like, oh like Whoever's working on whippers up right now tell them. Thank you. They're making it because our joke is like we're making it too easy But anyways, I'll get out of your way now Do you demo? Thank you as a great intro Yeah, so so yeah, I've got a feather ESP 32 v2 here that I want to get on whippersnapper So I'm gonna show off the process now. So I simply go to new device. I'm just gonna type v2 knowing that the search will find it There it is I meant to do this beforehand, but I'm gonna type in my secrets right in front of you Now if you've used the old installer you used to have to type in your aio key that's automatically handled now I'm actually behind the scenes for you and Now via web serial we can actually install The firmware straight from the website due to the magic of the web serial API So you don't see the pop-up here, but it's it's actually having showing me Having me picked the device from my various serial connections and I picked it and now things are cooking so It's connected to the device it's it's erase the flash It's downloaded a zip file full of firmware files Turn them into firmware files that are signed with my key or they have my key bundled in and it's actually flashing them onto this device now Yeah, that's kind of it it's almost like there's not a whole lot to show off because it's like a one-click installer It just works. Yeah. Yeah, it's too easy. It's like, okay. You installed software like But this is This is this and like, you know folks Google it or look at our Learning system whatever web serial is really amazing really powerful And I think we're really pushing the boundaries of what you can do with hardware like we have like real examples It really works and it makes things like it was so hard to get anything on a device and do anything Now it's just like boring like look it just you know your demo Maybe it was you know a few seconds of dead air there, but it was really only about a minute and the whole thing is done so I'm just gonna press reset and click the next step here on the installer and Pray to the demo gods. Oh, it's working. Yeah, I don't know if you see the lights flashing That could be anywhere in the world Yeah, there it is There it is in the end no code no command line just clicky click click on a website plug a USB cable in and Your device is connected to whipper snapper Yeah, what's neat is once you connect the board like the the feather As a stem of connector you can you do sit more sensors and we're adding sensors all the time Okay, wait, it's like I feel like let's do I'm gonna just like Speed around Lauren. Can you add an LED connected to the pin 13 LED and turn on or not 13 the onboard LED Yeah, the LED built in In fact, I didn't have to do anything it automatically detected that would be there Okay, and then show it when we can make him large. Yeah, all right, it's a small LED Okay, so now you press the button on the website Yeah, I'm pressing the button on the website even though you can't see that now Yeah Yeah, oh, yeah, look you a little Slider and it just works Just works no code For you This is a dream. I mean, it's just like it's so easy Even a girl can do it. No, like it's so easy even a front-end web developer can do it Like I just want to know when my basement is leaking. That's it It's all I just wanted that's all I wanted. Yeah, and these are the you can start to cobble together your own custom things without even Doing any coding at all But it's really powerful. You can if you want there's a lot of other things I mean, we've had reports from people who know how to do all this stuff and they're like look there's too much work I just like you said I just want I've got the board. I've got the component I don't want to go download a bunch of stuff. I don't want to write the code if I could click click click You know, I don't need to learn all that stuff. I know how to do it And if I could just do it fast, I would do a lot more of this I mean, you just you basically been did been did what normally would be like a four-day. I and by the way everything is SSL It's all secure connected You know, you have it all set up. It's working perfectly and you did it in under two and a half minutes That's the thing for like IOT demos like you spend like 20 hours on it and then it blinks and it is a big deal But it is kind of better if it's only like a minute and a blanks like look I spent like a minute look blinks I think that's the right amount of time like for the Fast too, so yeah, it's variable, but it's only getting better lots more coming this year. So all right, Lord. Great demo. Thank you so much Exciting all right and Brent or a power team next up Scott. What you got going on this week? Oh I'm I got nerds nights by Lady Aida So nerd sign big is a term that I I brought along to say that like you distract the nerd with something interesting and the more brought up the The bus pirate and how it's becoming an Unobtainium due to the chips that are used in it and she's had this idea of re-implementing the bus pirate in circuit pythons. I just wanted to share a Window I've been working on Reimplementing it. So I'm using the dual CDC nature of circuit python So the top part of this window is the output I'm getting from circuit python And the bottom part is the second CDC connection that is acting like a bus pirate So you can see that I can type like question mark and there's debug stuff at the top And then the like regular bus piratey stuff at the bottom that you're getting So you can say like what is it? This is on the RP2040, but it's generic circuit python code So it should kind of work across everything Although there will be pin mapping that you have to do And then there's also like a history that you can do so you can do like I want to rerun command too That's all standard bus pirate stuff. So if you've used bus pirate, I haven't actually used it before But if you've used it or you do use it Please ping me on discord and let me know how you use it because there's a lot of stuff that bus pirates can do And I kind of like I don't have a great feeling for like what the thing things are that people actually use So that'd be super helpful if anybody's had experience with bus pirate I ordered one. So I'll be able to compare the two Yeah, actually this project is six years old It's one of the first thing when we got the Sammy 21 going it's actually one of the first things I tried doing and I hit a bunch of roadblocks There's only one USB you are and so it's okay Let's yeah, I support for the second one that will happen a couple years ago Yep, didn't run out of memory very quickly and we did the same 51 But then you know I ended up not finishing the project then that second you are another RP2040 is excellent for this kind of debugging and A couple other things that came together and I was like, you know, now might be a really good time to revisit this very old project I love bringing out stuff from like six seven years ago and being like last commit five years ago And I'm like today is the day This useful tool that everyone had and then it's kind of not available and also There's been a lot of Advancements and chips so we can do a lot more not to so it'll be nice to have this Does anyone say like Swiss Army knife? Say that anymore Trademark, so I just think they have to use multi-tool. Okay. It's like it's like a multi-tool of Electronics, okay, right? Yeah, and and you know if people have code that they wrote for a bus pirate Like this this allows them to use that with any circuit by them device Yeah, it's interesting. We used to stock it. Actually, we were we put in a restocking order and they're like We don't know when it's gonna be available because of the chip shortage Yeah, I wasn't able to buy any v4s. I got a v 3.6. There's a couple after We just sold out like two weeks ago and we can't get any more. All right. Thanks so much Scott. Cool Next Chippler, how are you doing? I'm doing good. I was out for a couple of weeks Doing picon and seeing Utah Park, so I don't really have a cool new project to show off I have one that I did probably like 15 years ago So it's just in this little shadow box here. Okay, and I'm gonna reach back and turn on the power Is it oh It lights up. It's a giraffe. So this I gave to my mother-in-law. She loved giraffes and She passed away a year and a half ago and now it's mine again So it's a plexiglass cut on a CNC machine with some yellow and red LEDs at the bottom and bottom And it just lights up in this kind of I thought it was a giraffe orange color Yeah, and I'm gonna sit on my bookshelf over and I'll remember That's what I got tonight. That's really and thanks for all the stuff that you did a picon bringing people together Yeah, it was a really great time. We met so many folks at the open spaces and at the Sprint And yeah, I love it. So take this kind of as your early warning. I will want to go next year. Yeah Okay All right, and You can record this and play back to us. I saw 350 days. I saw where do they do is it gonna be in Pennsylvania? Yeah, it's in Pittsburgh and it'll be in a next year. All right. That's not too far from us, too All right, we could make a countdown Clock with a pipe roll. All right, that would be fun I think so and JP will come by in a little bit and show what I've actually been working on in circuit Python lands All right. He's up next. All right. What a good segue, you know, we script we script all there's a writer strike But we've been managing all right JP I was just intercepted by Jepler. That's amazing. So Jepler Jeff is a little too modest because while he was on vacation and at picon and at the national parks, he was writing Code for the synth IO library in circuit Python specifically code for doing essentially amplitude Envelopes or volume envelopes I've got this code running on a Metro M7 right here and it's reading MIDI messages coming over sort of serial or you are MIDI from this little keyboard and the cool thing that's going on here is that when I Normally press a note when you when you tell a note to make some some noise and a synthesizer So the most simple thing you can say is what's the pitch of it? And are we playing the note or are we not playing the notes? That's just like a really simple hard-on off something like this Right, so that's a little Like it's a buzzer on off and a buzzer like yeah, it's just on off hard off So what an envelope does is it allows you to ramp up gradually? How the from nothing to full volume goes you can do some other stuff in the middle But then also when you release the note does it gradually fade off? And that's making those changes is what sort of gives you a lot of the interest in in synthesizers notes So I have that actually in this code, which is from Todd bot who's also been late playing around with this I have that envelope of how softly it comes in and out What's the word I'm looking for attached to or mapped to the velocity of these keys so how fast I press them You'll notice I press them real fast And they're on off very quickly if I press them a little more slowly You Can hear has a nice sort of tail going out there you can hear it a little better probably with more notes Right versus if I hit those real hard Which you might want that effect to and so we've got the options now So jeff has worked on this a DSR, which is a taxis stain Decay and release. It's a sort of typical pattern It gives you a bazillion options And one thing I wanted to show off in this is that Todd also started implementing a sort of mixing of wave shapes or wavetables So the notes that I'm playing even if I just play one hold it I can kind of mold the harmonics that we're hearing and sort of shift between the different wave forms And I'm using the off key. You can't see it over here, but there's a little control I'm wiggling over here kind of like a mod wheel and we're going to do that So super exciting and I'm going to be Integrating this into the very cool computer perfection 1980s that looks like 1960s size by ashtray toy thing that Pete he discovered So it should give us some really nice with these long Sort of releases it should give us some cool sort of pad type of Ambient sounds which I'm looking forward to doing with it. All right Cool, and they can tune in tomorrow and your show and I think in the daily builds you can folks can grab this and play long That's right. Yeah. Yeah, Jeff can can point you at it if you can't find it, but it's I think it's in the Amazon So this is great, this is really cool. Yeah, this is as you're making the joke during that we have a meeting beforehand that You know JP and Todd bot are like they're just completely disfigured synth heads like And and jebblers like this like pure-faced Frodo hobbit Who's like who knows nothing about synthesizers and so I was like well I'll just implement whatever seems to make sense and it doesn't have the analysis paralysis Right questions. Yeah, it doesn't like any assumptions about it And so I feel like you know jebblers throwing you like meat on a stick and you know, you're just like Sitting in the dark I mean like I'll see that I Designed the first part of emic was since too, so I'm I'm a hundred percent guilty of you in there Right, I speak of myself. So, you know, the less you know, sometimes if I have a quick second, I also wanted to show the Guide that just came out is for this beauty. Yes This is a little video and you're gonna show the guide to great. Good. Good. Yes. I just wanted to give it give it This is great. Loving Pat before it goes off to it's rightful owner. It's my friend Ryan who actually owns this Card L cars panel from the set and I built the the rest of this to go with it This is exactly the right amount of Star Trek that you probably Needing your home because you know, you could turn your living room into the bridge But like this is kind of like hey like I really like it. We'll talk about it's real Yeah, but you're not on the bridge in your living room That's right And he has a couple options with the buttons on the matrix portal here We can switch to just still if you don't want to blink in all the time Yeah So that's one of the the choices and then with the other button I can go through different levels of brightness So depending on how that's nice how much that's bothering Oh, I kind of watch Picard on the TV or something like that Yeah, this was a tough project There's like how do you blink only subsections and we were like looking at how they did it historically and it's Wire it and I was like well, yeah, like what if we just put like an RGB matrix behind it And you just like map out the pixels and that looks great, you know So even has a little bit of that nice kind of classic and condescent look. Yeah. Yeah. All right. Good work TV. Thanks so much Pedro do you want me to bring no yarn to the side here, too? Are you both doing this one or no? I think I think he has something else from Star Trek into Star Wars May the 4th We like both sides use the force Picard. Yeah, does the start of a holiday? Yeah, yeah, yeah, because we've changed our logo on our side your Star Trek day Yeah, you're right. Yeah, anyways, I was showing off the I don't know who The Bo-Katan and like some of the other Mandalorians and Ahsoka I think it's supposed to be like a communication thing. So I know PT you like like wearables I have the subtle like LEDs in it. This was definitely Wanted to give a shout out to Billy Yeah To do the diffusion and then the thing I'm really proud of is the the coin saw battery just a little What's my call it? I'll come on The head dance from like Cloud City except for it doesn't have the big, you know cans on the side It's like you're like one of the air traffic controllers talking to land out cruising. It's like the deal change better. Hope I don't change it more It's so hard to do DIY Props that have such a such a fine element is actually like Hard to do something so subtle usually it's like I know I've been looking around and of course Disney does not make one or have one with LEDs in it Like the ones on Amazon. Okay, this might be cool to Also gonna tell everyone this is the augmented reality headset from Apple Yeah, we'll release this next week I was six up I wanted to have it for this week, but good make it I'll be out next week He variable except we're gonna go know it and then we'll wrap up with Brandon Lynn. Hey, would you go on? I? Was muted. There we go. All right. So yeah, this is last week's project, but I wanted to share it this week So I made a little snap fit case for the new feather RP 2040 with the USB host So we just got a little There we go. There it is. So it's a simple two-piece enclosure No supports needed and no screws. So this just fits in here and Then we have a hot glue bit That's as used as a light diffuser and the in the top cover And I like doing these little button actuators on the cover so that you can actually press the button with the cover on And then I also have a little hole for the stem of QT port So you can use that and then we see if I get there it is Got a little USB cable and then with that tip that Bill Binko gave us It makes a really nice light diffuser when you add a dab of hot glue So you just add a little chamfer to the hole and then the hot glue doesn't seep through It just kind of bubbles out a little bit so that it gives you a nice viewing angle For the onboard new pixels. That's really nice. I also add some tabs So folks can use zip ties or screws to attach the case to something else I'll set a little slot here if you want to pass some waters through That's always nice to have and that's pretty much it. It's a pretty simple place Thanks, and I always like doing the button reset the button presser so I can still use the Button or the reset button But does it even pop it accidentally? It's like you've heard of purpose Yeah, exactly you have to actually press it in there. So that's nice So folks want to get a little case for their shiny new feather check this one out. It is up on The learn guide and on printables and thingiverse. So all right Yeah, thanks so much and don't forget folks You can tune in to learn how to make all these things or go behind the scenes of making these things on 3d hangouts every Wednesday There you go. All right All right, you want to play us out? Hey, yeah play out. So every year I do Each challenge coin which is a little these are small. I mean these are really small But you're always restricted to what solder mask and silk screen color You can use and it got me thinking solder mask is ink So screen is ink and so this year when I designed it. I Started out with that and then being a maker and doing a you know small volume of you know a couple hundred of something I Have one of those manual solder paste stencil printer things and I realized I could double-duty that thing into a silk screen printer Using old-school silk screen technique and so I went through the process of teaching myself The nuances of doing silk screening on to hard surface and I was able to take this and turn it into this And so this year for my my challenge coin Again, you can see it's small It actually is in addition to You know soda cryptic challenges You have to you have to do with the touch sensors and the buzzer and the LEDs and it's got side mount LEDs that shine through that It also has a you are connector and it's got a story every year And you have to read through the story and solve the challenges that the protagonist has But but now it's actually got some games in it. Of course, it's got that particular game in it But yeah, it was it turns out that you can actually do Old-school traditional silk screening and and use solder mask ink Yeah On a silk screening machine and so this will actually reflow it, you know standard reflow temperatures and the inks don't change color and anything else and so This is my this is my can it be done. I guess it can I'm gonna try kind of project Yeah a while ago there was folks that they got like the PCB printers They would or like they would do color printing on top of PCBs and they're like they're really beautiful designs but the machines are like ten thousand dollars or whatever and You didn't get the functionality I think with being able to like touch the electronics and they still could do things. So this is really neat Yeah, the challenge with you know, we always say that you know, the the the holy grail is UV printers where you can get full fidelity full color printing But they're still struggling with what happens when you reflow it at you know, 275 Celsius or something This is solder masking and those are actually capacitive touch underneath all that ink and it works fine Yeah, I've had one of these in my pocket for weeks to just field test it and it works great So yeah, it turns out you can use old-school silk screening technique to do with with solder masking ink to Color your PCBs Want to find out more about this how could they Learn something. Yeah, so I learned a lot I've made some mistakes along the way and I've got what I think is a process the three producer will buy anybody So I'm designing a new PCB specifically to take through this process And it's it's it's gonna use all sorts of fun color and it's gonna do Like you could because it's old-school silk screening You can actually put multiple colors down mix them together and spread them through and get like a rainbow effect And so I'm gonna be playing around with that and I'm gonna write up a whole tutorial on it It's gonna take me probably about a month right now. I look forward to the first tie-dye PCB Put on a spinner. Okay. Well, thank you so much for sharing. This is beautiful. Thank you Okay, everybody, that's our show. Thanks so much for joining us this week This is our favorite half an hour of the week every single week We're gonna be here next week some 30 p.m. Eastern time and ask an engineer starts in about a minute. We'll see you then bye everybody