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Results so far: the chip can be programmed using SWD, so it's an ARM device. Good.

But the only test points on the board are for the various motors and sensors. The serial port doesn't have an interactive console, either.

The chip itself seems to have little RAM, so maybe it's best to get rid of it, and use the board as a general robotics platform. After dumping the firmware, ofc.

@eb Frankly, it's all Chinese to me :P

I don't see any diagrams, so it seems more about the tech used rather than this particular chip.

@dcz this is the diagram I’m talking about. It’s not much but maybe it’s something? A part of interest is:

> The MCU main controller reads the IO port level to obtain the DIP switch encoding value to know the CHIPID of the SOC chip under test. For example, 0000_0001 represents AM380S, 0000_0002 represents AM380E, 0000_00003 represents AM330

Which makes me think maybe also if you found the sheet for the AM380S that could be helpful.

@dcz Finally, I would try looking for china localized name of the company and possibly chip. I don’t have time to do that but

@dcz No problem. I hope to dive into the electronics field someday, so it's very cool to me that you're doing it, it's so foreign to me! Lowest I've ever gone is kernel & RTOS depth for a brief moment but usually my work is pretty high level.

@ruff Good find, but the one I have is LQFP with 64 pins.