On last version of firmwares, the system is a bit more complex and yes, it reads first the firmware version from the motor controller so if it shows the version "0.50.0" that means it is communicating with the motor controller.diagonti wrote: ↑Jan 03 2020 5:43amThank you for your reply. The display successfully determines the firmware version of the controller - tx/rx do not appear to be switched. Brake sensors are not currently connected for simplicity - do I need to pull this to +5v or GND for the display/controller to init? Obviously the 850C does not directly connect to the brake sensors.
The firmware on display is done in a way it will not advance to main screen while you keep on/off button pressed and you keep it pressed otherwise the power will be gone.
For testing, I think you can disconnect the wire that power up the motor controller from the display, then, connect directly that wire to the battery voltage. That way the system will work but you will need to cut off the battery power to turn off the system.