 Okay, so Top Secret this week is part of our My Little Hacker series, and I like the intro that I made for this, so I'm gonna do it again, and then we're gonna talk about the latest instance of toy hacking. My Little Hacker! Okay, so we posted this up on the socials, and I'm like, hey, try to guess what this is. So, what is this lady in it? This is, and this is the 3D rendering. I like this rendering, so they really give me a good sense of what it is, and this is the CAD output. I finished it out in this morning. This is schematic, so this is replacement brains for the Baby Einstein Tick-A-Long. No, no, no. This is the Baby Einstein Tick-A-Long, and this is a replacement board. You can pop out the board that's in there, and then you can put your own music in it, and if you know what this thing is, and know how it repeats the same songs forever, you probably would put different music in it. All right, do you want to? Yeah, it's like this weird chiptune-y. Yeah, let's go the other way. So this is the toy, which is now off. It's a little like, you know, you need a toy to entertain a young kid, or maybe an adult. Anyone can use it. It's inexpensive. It's less than 10 bucks, and it's got this button that you can press, and then there's like this little LED, it's like a weird, like, it's like an AI version of an iPod, you know what I mean? Kind of like weird, like mutant, and it plays kind of random songs from the memory, and they're kind of, the speaker's pretty good, but the tunes are just kind of like your generic classical tunes that have no copyright infringement issues, and like make your baby smart, whatever. But we want to have it play nine genaels, or maybe a podcast. We don't know, whatever you want. So if we did a previous video where we opened it up and we saw what's in it, it's, you know, of course, this blob chip. There's like three LEDs. I mean, look, they have to make it cheap. I don't blame them. It's a single-sided paper phenolic board. Here's the switch. And then, you know, we did some hacking experiment where like, oh, you know, can we boost this to run a ESP32 S2? And we tried our I2S BFF to make music and like plug in the speakers. We know, you know, we basically got a proof of concept of what we wanted to do to replace the brains, because we thought like, let's make a new circuit board that fits in here. And instead of playing these pre-programmed tunes, you would be able to customize what audio you want to play. So you can go back to the... This is what it is. Yeah. So it's got a microSD. It's kind of visible on the top left. And the main processor chip is the ESP32 S2. I thought it'd be cool to have Wi-Fi, because then once you've enclosed it in the case, you could use Wi-Fi. We have a Wi-Fi workflow in Circuit Python. And there's also over-the-air programming, of course, in Arduino. And then you could, you know, once you have it set up to look for your Wi-Fi, you could reprogram it and then also upload new files to the SD card. So you can have like new songs. You can change it out. Your kid gets really tired of the pixies. For example, you could change it to Depesh mode, you know. And then if they get tired of Depesh mode, I don't know. I guess they can go to the cure, get tired of the cure, suzing the banshees. I mean, like there's infinite 80s goth music that you can have your kid play. So you can put any size SD card and the ESP32 S2 can definitely play Wi-Files in Circuit Python over I2S. There's an I2S amplifier, our favorite, that Max 98357, which we adore so much. We put it in so many things. There's a STEMI QT port so you can attach sensors or devices. Maybe you have it read data or send data or have an OLED or whatever you want. USB-C for uploading code or, you know, direct communication. If you don't want to do this wireless thing, a little boost converter is kind of on the bottom center there. It takes the three volt battery because we want to use the enclosure. So we'll take the three volt battery pack and boost that up to 3.3 volts because, you know, if you're using rechargeable batteries, it's like 2.6. And we tested it. The ESP32 does not want to run. S2 does not like running off of two rechargeable AA batteries. You really want to have a booster to give a nice clean 3.3 volts. And then we kind of sprinkled a couple neopixels, like five neopixels around to have the same background animation. But it'll be full color, not just three LEDs, a single color because we like color. And then the outline is the same. We kind of, you know, moved it out a little bit, but the same pads for the battery and for the switch connector and then the elastomer. So it should be a dropping replacement. And then, you know, of course, it's you can't expect them to make a product like this would be more expensive than most people want to pay. But for people who want to hack their toys, you know, this can be like 20 bucks or something. And then you can. Yeah, this is this is a nice. Gettify the boy. So, you know, Kitto has one of these. And then eventually it's hard to the music. You can replace the circuit board in it. Wirelessly put any music you want in there. Basically make your own Kitto Spotify or like whatever. It's like it's the music that you want. And then you can, over time, put different music on there. And I think that'll be kind of a neat, you know, parent kid thing. And it's sealed up to an enclosure that's like battle tested. These are super cheap. There's like millions of these out there. They're never going to change the design either. And so I thought this would be a good project enclosure. Yeah, it doesn't change the behavior like maybe a double click does something or like a hold like you can change the behavior a lot easier. I did make the switch do the gain on the amplifier because there's a gain pin on the max. So when you put the switch on to low power, it like drops the gain by like 90 B. So that's still that's still functional. But one of the things I wanted to try to do is one thing I do kind of like about kids toys is you don't have to turn them off. The quiescent current is really, really low. I mean, you use your transformer batteries anyways, but it would be really neat if it's like, if you forgive, you know, you know, you're like, I have so much stuff for you. You're not going to remember to turn it off. And so the ESP 32, another reason I like using the S2 is it has very, very low quiescent current when it's in deep sleep mode. And so I have to, you know, want to experiment, but I'm pretty sure that I can make it so when there's no after some playing a song, it goes into this deep sleep mode. And then when you press the button, it'll wake up in between. It should use like 30 or 40 microampere. So it'll be able to, you know, not as little as whatever this 80, 51 or is, but enough that it should be able to run for a couple of weeks on a low battery. I don't know. We have interesting. I mean, you could also like use text to speech. Like when you press the button, they could say, you know, what the weather is going to be or it could have like personalized messages. I don't know. Like I like the idea of like we're using these like really durable enclosures. And then we have, you know, they're not like waterproof, but they're weatherproof. And then using the Wi-Fi workflow to reprogram them. And then, you know, these use double way batteries. So this will be kind of a fun, you know, mod, moditoy type thing. Yeah. That you'll be able to do a lot and, you know, give these as gifts to people on there. Here you go. There's some fun songs. Emojin Heap has a neat song that they engineer to help put babies to sleep. You could just have a single serving thing where it's like, here you go. Yeah, we could play a really nice song. Drift, you know, the drift song. They could play it on loop. And then another thing is that you can change the timeouts. So I don't know. I think it would be kind of fun. Like we've done quite a bit of toy hacking. And, you know, it's interesting. It's like toy, toy hacking and circuit bending is kind of like an old style. Like, I remember like the, you know, the early make years, that was like a really big thing. People do toy hacking. They open toys and like change resistors and values to try to retain that. Someone asked, this will retain the baby proofness of it because you're just opening up, changing up the circuit board and then sealing it up again. That's why the Wi-Fi is so cool is that as an adult, you can go in and you can change the code over the circuit, Python Wi-Fi workflow. But like the kiddo like can still chew on. Yeah, it's kind of neat that baby toys are all screws. They and it's like it's funny. It's actually repairable, even though that's probably one of the last things people repair a lot. Anyways, so then we have a little bit of an update. I'll just play the videos. Thirty eight seconds. This is the Teddy Rexman modification that we're doing. Short version. There's these Bluetooth animatronic bears on eBay for $20 or less. It's a rebooted Teddy Rexman company went out of business. So they're just sitting around. You can't put anything on them custom until now. So this is our progress with that project. Not this Wednesday, but the 10 days ago, Wednesday is when I got the audio working in the morning and I don't see which version this is. So now. Let's get this. So now I've got it playing custom audio. So that's a song, a sticky bubblegum that our Aida kiddo likes to listen to. Yeah. So that last picture, I went over to my journey and I typed in Teddy Rexman, Miss Rachel, and I was playing around with a couple of different images. I'm like, oh, that's pretty. That's actually what I'm going to do. I'm going to dress up the Teddy Rexman is Miss Rachel. If you're familiar with Miss Rachel's, she's a music teacher that does like singing videos for kids. And so I made the the graphic. And of course, you know, I had to then later on deal with dudes on social media and said, why do you have to change the gender of the bear? Because that's what you do now. You wait around until there is a picture of a teddy bear that's in overalls and you care about if it's a boy teddy bear or girl teddy bear, because that's what people do on the internet now. That's what we're at. So anyways, that's what that that event is. I thought it was cute. This is cute. So anyways, that's this week's My Little Hacker.