upcycle-electronics / game-and-watch-hardware Goto Github PK

Minor: The schematic shows STM32H7B0VGT6, but I it should be STM32H7B0VBT6

I noticed that you are not yet in Discord dealing with game and watch hacks.

Except for the power switch parts, all parts were found with the help of me and several people.

Type-C Connector : JAE DX07BN24JA2R1300
1.9V Reg : dialog semiconductor DA9230
3.3V Reg : STMicroelectronics LD39020DTPU33R
Audio Amplifier : nuvoton NAU8315

If you are interested, how about joining Discord?
https://discord.gg/P7uPM3Sy

Hello!

First of all, thank you for this amazing effort of reverse engineering the Game And Watch. It's been incredibly useful to me and I'm sure to others as well.

I just wanted to kindly point out an error I discovered in the colored trace images (GnWtrace1v0.png and others). In the 1.8V regulator area there's this SDM component that is an inductor in a 2016 package (it's right besides the M-1 label). Both ends of the inductor are colored the same, which suggests that they're joined together. I'm afraid those are different traces, as they show very different signals in an oscilloscope. This inductor is part of the buck converter circuit and has the output switch at the end that leads to the regulator IC and the actual power output going to the rest of the circuit at the other end.

I hope you find this little bit of information useful. Have a nice day!