esaj Posted September 9, 2015 Author Share Posted September 9, 2015 What have you done with the BMS input cable? Connected it to ground ?The BMS and the Mainboard imho should only share the ground line. So the way to "communicate" for them would be that the cable has a pull up resistor on the mainboard and the BMS shortens it to ground or leaves the cable "open" (unconnected) to signal the two states (accu can be recharged/accu is full)Or did you mention in your post that the wheel did not start at all when you left the cable unconnected?The wheel did power up if the cable was disconnected but started repeating something like "low battery or <unclear> in battery" immediately, I didn't have the motor connected (except for the hall-sensors), so I don't know if it would have driven the motor, but I doubt it would have let me do anything... The 1Rad Werkstatt guys told me to what to do with it, and then asked me not to tell it forward, not sure why, maybe they suspect it would influence their business or something. But from the little I know, it seems there was more to it than just connected/not connected, as there seem to be some extra chips around the point where the cable seems to go in the BMS:So probably the BMS somehow did tell the mainboard when the batteries are "too full" for regenerative braking, and the firmware would then switch to some other type of braking. Link to comment Share on other sites More sharing options...
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