 Good evening folks. Welcome to the Adafruit Show & Tell. My name is Melissa and tonight I'll be hosting. We're going to start out with Jeff Epler here and I'll bring him on to the screen. Hi, so as I mentioned on a couple of show and tells recently I'm going through some vintage 80s computer stuff and I ran across this book from elephant memory systems their slogan is never forget and Because it was already coming apart. I picked it apart and I've taken some pictures of it and I remember this brand from the 80s. They made floppy disks and of course they thought theirs were the best and I just when I looked inside this little book I'm just like I want to share this with people because there doesn't appear to be a scan of it on the internet So you can bring up my screen share here are just some of the quick photos. This is actually from family computing magazine I guess I didn't write down the year but Issue five so the truth the whole truth about floppies amazing book reveals all For one and one-half earth dollars And in Massachusetts to order it you can call collect so there's a six one seven number there for you But from here on out are photos that I took of the book. It opens with this Elephant in space with solar panel ear flaps and like some kind of grippy nose and just kind of establishes or what looks now retro to us and Then there's other weird photographs like a Carillion photograph of this disk shows the magnetic field of 40 million magnetic crystals that sounds like a lot and then Hard and soft sector discs hard sector discs have just totally disappeared from the world by now But and by the way elephant made both kinds of floppies the five and a quarter and the eight inch ones The ones you think of might be the three and a half. So this was a long time ago parts of the disk label I Like this one you only need Five eight inch discs and then you can in store then you can store the whole old and New Testament of the standard Christian Bible, so how's that for information density and I don't know the priest here has a little neon neck collar. It looks like Here we have an x-ray of a floppy drive x-rays cool And then this one I didn't quite understand they talked about how flat the disc has to be and they're using lasers to measure the flatness which I think in about 1983 lasers were pretty hot technology and The stresses that the disc render when they rotate it 300 rpm if it if your disk is not perfect if it's not an elephant You just might have trouble There's a whole list of the tests that they do they measure for extra bits and missing bits the smoothness The substrate material the coefficients of expansion. They just measure everything There's a lot of these cute little elephant arts throughout the book and Then at the end the elephants have successfully reached the moon and they're looking back at earth So I hope in the next couple of weeks to actually do a high-resolution scan of each page And put that up on archive org but for right now. I will just share a link to this album on our discord And yeah, that's what I'm up to reading vintage paper computer stuff that isn't anywhere on the internet that I can find Nice and did you have a video that you wanted to show? Yeah, let's come back and do that in a minute We were short on people Do you want to just do that? No, that's great. Yeah, let's do it. It's a short one. So, all right. Yeah Hey Jephler, what have we got here? Well, this is my friends a Kim one Which we have just gotten running today and so we've already put in a program in hexadecimal to add two numbers together So let's see. We are gonna set the numbers to add those so we're gonna go to address zero and enter some data and why not add 37 and 12 and Then this is the first byte of our program at address two and so I will hit go and With any luck those numbers that I said add together to 49 in hexadecimal and that is a real program running on a real original Kim one Yeah, so the Kim one is I think the very first Computer and I have to put that in in air quotes made with the 6502 microprocessor, which was later famous for being in the Apple one Apple II Commodore 64 and a bunch of others and This is Like a real vintage older than the Apple one Computer and it was just a blast to be able to hook it up power it on and still have it work Which was amazing? Yeah, so that's another thing that I had going on recently. So thanks for letting me share that. Yeah, that's like a lot of fun Thank you So next time I'm gonna go ahead and we had John Park drop in here quick. So I'm gonna add him Hey, hello hi So it is Crazy hot here in Southern, California. They're asking us to reduce our power consumption to try to prevent rolling blackouts so I turned off the AC in my workshop and so I'm Inside the house where it's nice and cool, but that way. I'm not pulling a second building and So what I wanted to show though is I've been working a few weeks ago. I showed I was working on essentially an mp3 player that I'm calling the walk person and I just recently went from that version of it, which was on a couple of breadboards I've stolen the tft display that was there as well as the Buttons and knob for it and I have now transplanted them into this beautiful Case that was designed and sent to me by no way. It's a little blown out Let me just see if I can tweak my my camera settings here. I'm not used to broadcasting from in here. So Bear with me one second and I'll adjust the Exposure there There we go, that's a lot better So you can see here I've got this this great look in case for it all of those guts are crammed in there And what this is is a feather rp20 for it 40 There's an SD card reader that's built into the display. So I got this nice display here And here I have the SD card reader extender So we can treat the SD card essentially is mixtapes when I power it up It just checks for mp3s and then it includes those in the list of things it can play Right now I've got it plugged into some external speakers, but ideally you'll have some some headphones for it I got some really cheap Old-school Walkman style headphones on Amazon for like eight bucks And I've also got a volume knob here. There's a little rotary coder These are some of our neo-key switches. So if I go ahead and hit play and You'll see we have Progress bar that's gonna march across as the song plays and if I tweak the volume to see that Vertical progress bar One thing I can't stand is when rotary coders are used as volume knobs Especially on car stereos instead of potentiometers, and they don't have enough granularities You can't get it to where you want there's like 10 steps on it So you can see I made mine have a lot of steps of granularity for adjusting volume So we can hit fast-forward go to the next song And we go backwards And I'm gonna stop it there and then if we turn it off It was a nice little recess switch here for turning powering it down take out the SD card put it in different tape And and where we go. So That is the guide I'm working on I just took photos of this today as I assembled it And I'll be putting learn guide together the code is up now for the learn guy called walk person with persons spelled with mp3 in there, so And so that's the project that's what I'm working on. Oh, that's really nice. Yeah, I like how the volume works I have you thought about maybe like making it so it does different granularities by clicking on the Into the button or anything like that if it did up. Sorry. I missed that different different What does does it is it a clickable button for the knob? The encoder is yeah, and I and I have left that as an exercise to the user to use that for something I thought mute might be nice on that But I didn't I didn't add that before I uploaded the code and decided to be lazy and let people decide what they want He's had for so you could use that for different things be interesting to see what people do You can go in there and adjust the code. I put a little simple graphic there I'm not trying to animate that graphic, but I was really excited to use these Progress bars as a library for circuit Python That's called the progress bar libraries a horizontal progress bar Vertical and you can adjust their size what they respond to but they seems to work Great without any like glitches in my audio because that was something I was worried about is taxing the system I didn't come up with a good way to do like big animated graphics on the screen without running into issues I'm sure it's possible, but I was I was content with just having a simple Stationary graphic of the tapes and then just move those two little things around. That's really good. Thank you. Thanks a lot and next up we have Charlene and Hello So you have yeah Awesome So I published a new guide today and it's for this little thing it's a little led cube made with dot star matrices and it has it's connected to Wi-Fi so if you give it a little bit it should finish its request of course it like stops Working right as I get online, but it's powered by the ESP 32 s3 So it has Wi-Fi. It has Bluetooth It has an accelerometer in there. So if I and might have to reset this thing But if I do this no no no. Wow. It hates me. Okay. We're gonna restart again But it's gonna take a little bit of time but Yeah, this is all off-the-shelf parts and It is Definitely one of my maker dreams. I have only show my face here. Yeah, I have I've been waiting To be able to actually make something like this Without needing custom PCBs because I don't know how to make my own PCBs So it was really really fun to be able to at least Get that get that going with all of the parts that are off the shelf Yeah, so I can actually show you another cube here I really hope that our internet is not down. So that's that's why it's like maybe a little broken, but it has a ESP 32 S3 actually this one has an s2 And then it has a little SEMA board in there and then a tiny little battery sandwiched in between. So it's very packed And these are prepped LED matrices matrices in there So it definitely Needs to sort of be sanded a little accurately But and the and the frame is made of PETG so that if the dust our matrices heat up It doesn't warp as much and then I put a little switch in there a little notch for the switch Yeah, it doesn't have a long battery life. I think it has like maybe 20 I wouldn't say maybe like less than an hour But it's really fun to just be able to even have something like this And I am kind of really sad that it decided to break Is it your wife? Well, I mean you have Wi-Fi because you I assume you're connected with your internet right now Yeah, exactly the video Yeah, I know it's really it's really unfortunate, but the guide is up. There's definitely cool Animations on the guide itself and I also wrote about it on my blog post I think the one thing that I wanted to maybe share This Little webpage that I made for it. So here is a little thing that you can like draw pictures. Oh, wait Oh, oh, oh, it's happening something. Oh good. Oh good Maybe maybe we'll see. Oh There we go, yeah Let me bring you back to the full screen here. Yeah, and then maybe I'll get rid of my face here But yeah, here it is it is scrolling the words show and tell And I can paint a picture using this webpage and then I can send to cube and it'll change Well, I changed the top one first because it only pulls when the scrolling is done So now There it is eat a fruit and then it also has an accelerometer so I can do this like cool animation when it's When it's upside down and then go back to the thing That's it I'm really happy with how it turned out and it's just super fun to hold There definitely is some, you know internet issues to be figured out, but yeah, it's fun Yeah, and since it has the ESP 32 s2 and s3 in it That could actually work with the Circuit Python code editor that I've been working on in order to like be able to edit the code without having to Worry about any chords or anything Yeah, agreed. So now you don't have to I put a little notch to like sort of pry it open But uh, maybe you don't have to if you can just code it wirelessly I mean you have to charge the battery still, but that's true The next version will have inductive charging and then you won't have to do anything. Oh, there you go. Perfect Thank you so much for letting me show this and thank you And so that's all the people that we have so we're this is going to be a kind of a short show until the day and so thank you for joining us and If you have any projects that you want to show up come back next week. Bye