The plan is to mount motor also for the rear wheel to climb the uphill better.
I have ordered a new motor controller and display module. We have investigated the interface between them.
The communication is UART with 9600 baudrate.
Looks there is enough place behind the battery pack for the rear controller.
The controller almost fit.
If the communication is broken from controller to display,
the roller works further properly, just the information from controller is missing on display. E.g. speed flashes. This means, if I connect the two controllers to the same display interface that way, that rear controller transmitted comminication wire is not connected, the two motor should work well. Just the displayed current consumption value will not be correct.
I grabbed a half millimeter from the edge of the rear engine control board. Now its size fits to small size.
Power off command: 0xFF 0x00 0x00 after a frame.
This is the PHP script I have used to check the checksum algorithm: kugoo_s1_communication_checksum_checker_script.zip
Next is to build in the motor wheel.
Next is to build in the rear controller circuit.
The communication must be connected. I have also connected the switched power line, maybe it is needed for proper power off procedure.
I have removed the other wires.
Wires are put into the house.
Capacitors are fixed with glue gun.
The controller can be mounted into its final place.
The final soldering and isolating of wires.
Here is the motor connector.
It looks like this.