 And here at the Hakkade area, you're playing Pac-Man? Yeah, so it's one pixel Pac-Man. So cell phones are so good these days. If you want to make a video game, people are gonna be disappointed with the display you use because how can you beat like a really 400 pixel density? So when I started thinking about this, I'm like, why don't I just take a great retro game and make the display worse? So how many pixels are there? 32 by 32. That's awesome. What is this? What is this right here? Yeah. So we're actually showing off like how original synthesizers and keyboards were built back in the day. And these are just some oscillator chips. But we have several weeks worth of instructions on how to build things. And this board is kind of the culmination of it. It starts off over here with oscillators that create the sound. And then it goes through simple logic chips to make the sound different, to add rhythms to it, to add things like drum sounds, and ends up with outputs of powered speakers. Nice. And display output. What was that? Display output. This one? Yeah, how does it display? Oh, this is audio. Audio only. So audio-based display? How do you get it from there? So these are separate projects, right? So this one is a pre-scale microcontroller. This is called the TNT 3.1. And these display panels actually made for like LED billboards and large displays. I mean, you can buy just a single one. How much is it? It's about $40 or $50, depending on where you get it from. It's got like a nice LED. Yeah, I'm guessing at the markets here in Chenjian, you can get them for quite a bit less. But I don't have much experience with that. So you put this in front and then? Yeah, this is just a piece of frosted acrylic. So did you win a competition with that, or was that an example? I didn't. But a friend of mine named Louis actually came up with this idea. He calls it Smart Matrix, and he sells them. They're made to go inside of like a square picture frame. But I've seen them displaying like a lot of video, and I thought, how can I make it a little more interactive? And so I just soldered on this wire so that I could add Atari, a joystick, which you can get from eBay or other sources. Is Pac-Man open source? No, well. How do you get all the game engine in there? So I built the game engine from scratch. There's a really great website called Pac-Man Dossier that has gone and researched how the original Pac-Man was written, and it's really fascinating because there's like AI for the ghosts on how they chase you. And it's really simple AI, but it's so clever that when you play, you feel like they're actually intelligent. It's scary, right? Yeah, and so I think doing a project like this where you walk through something that's already been created, it makes you grow and learn and think about how other people are doing this. You're a reverse engineer at Pac-Man. Yeah, I mean, I didn't reverse engineer and someone else has done that, but I followed the rules and the things they discovered and made them in code. What does hack-a-date? So hack-a-date is a website for engineers and engineering enthusiasts, so people that are excited about learning about electronics and building electronics can go there, get skills, talk with each other, ask for help, share advice, that sort of thing. Do you work with that? Yeah, I'm the managing editor of hackaday.com. And we also have a community website called hackaday.io that has 72,000 registered users that are building these sorts of things. So for instance, like the audio projects, that's projects 5,992. So you can go and look through thousands and thousands of these projects, you can build them or just be inspired by them. And all these guys can get jobs at any design house here in Shenzhen, right? You know, that's an interesting question. One of the things I tell people is this is almost like an online resume. So if you build these things and document what you're building, it shows that you can engineer, it shows that you can write about it and it shows that you're a social person and those are all very valuable things for employers. You've been around Shenzhen for... Yeah, I've been here for about a week now. And so Shenzhen is pretty cool. Yeah, there's lots of design going on here for hardware. Yeah, I'm really shocked by the number of engineers that I've met from all different countries and the interesting stories that they have. I also had the chance to go to the markets and see what's going on there. The Huasheng Bay? Yes, Huasheng Bay, that's what it's called. So it's amazing to see there's like a used area where you can go and see people are actually repairing things and putting them up for sale. There's new area, blocks and blocks and levels and levels of really interesting things involving electronics. So if people are bored somewhere else in the world, they should just come and live and work in Shenzhen and show off what they can do and they'll get a job, right? I think that there's a good chance that if you're motivated, that will happen. Cool. So you took a demonstration in certain circumstances like a couple of really simple logic-based oscillators and then, you know, two of them and then people can just essentially make random connections and try to produce meaningful sound. So it's like circumventing on a big stage but on a red board. Where are you from? Where are you based? I live in Madison, Wisconsin. Wisconsin, and you? Los Angeles. Los Angeles. Cool, all right. This is it, activate.