7:36 The bottom right two unpopulated connections on the board are an external mic/line input. The left connection is the positive side and the right connection looks like ground. I have two of these and yes there is a different mix of songs on them. I am going to install a line input and speaker out jacks because there is an unpopulated mic input on the board to tie into theres a micro built-in microphone on the board. At least on mine there is. I connected an audio source to the mic in on the board and hit record and the audio quality is pretty good. I got mine rapping out good vibrations by marky mark & the funky bunch.
Oh no. I got an "LOL Surprise" ad on this video 🤦 I've done one such teardown before, on a robotic bear that inadvertently terrified the children, for the parts... Of course it's all unmarked or blob ic's and geared down 130 motors. Kind of surprising they don't reduce the wire count somehow.
Oh yeah, I took apart an RC car the other day and noticed the wireless chips (both transmitter and receiver) had no part numbers. That would explain it. The motor controllers were still marked, at least.
Oh man, that JL company makes basically "all" the Bluetooth speaker chips in cheap devices out there. They are so ubiquitous, you've totally heard their Bluetooth tones. (Doo-DOO!) Kinda funny it has external flash, I'd be tempted to dump it and throw it in Ghidra.
