Help me about LSW 1570 controller

Ciao guys,
I have a controller like:


(LSW 1570 Lishui).
I don’t know if it works. How can test it?
I have a scooter decommissioned by the rental company and I don’t know the problem. I can’t test with its hardware because the link whit the rent company no longer works.
I think the dashboard communicates with the controller via CAN bus, but I have no idea about the connections (standard?) or the protocol. What hardware can I use to test it?
Thanks

Caio, @rbacchi , welcome to SimpleFOC!

To reverse engineer this thing you should consider some of the following:

  • take it apart and keep careful record of what pieces go where. Put screws back in their holes after unscrewing things, and take lots of photos!
  • Get some good photos of the electronic parts where you can see the chips used
  • Make a diagram of the different modules and how they connect up
  • Identify which connections are for power and what voltages they are intended for
  • When you power it up, which parts get power? Does it look like it is working electrically and you have a software issue, or is it an electrical problem?
  • an oscilloscope with analysis functions will help you decode protocols like CAN and I2C

Feel free to post more details here, and maybe people can help, but at the moment i don’t think we have enough information what is not working to be helpful.

Thanks, Runger,
The controller I posted is filled with a soft resin (silicone), and I can’t currently find the schematic or the components used. Since I saw a Fluctuator post with an image of a similar controller, I assumed it was a common type. Before I commit any further damage, I wanted to see if there was a way to test its functionality by accessing the bus.
Thanks and bye, Roberto