larsb
1 MW
Couldn't get the bike moving today. I checked for faults and it seems controller is busted.
It doesn't read correct voltage and "undervoltage" error and "controller failure" is shown. After something like 50 on/off attempts finally controller turns on correctly. It loses the voltage reading again after two more attempts so driving is again lost.
Controller ON is full battery voltage and the B+ and B- is solidly connected, the other parameters like revolutions, high level and low level switch is shown correctly. Don't understand what can cause the voltage reading to get lost,
? maybe someone with controller build knowledge can explain how the voltage sensing circuit might be designed ? maybe it's fixable.
Or is it done in the microcontroller? (ie non fixable)
View attachment 3View attachment 2View attachment 1
This is sooo extremely annoying. I've had too many controllers dying on me in these five years in the ebike world. Maybe i'll just quit building and buy an e-scooter or something.
It doesn't read correct voltage and "undervoltage" error and "controller failure" is shown. After something like 50 on/off attempts finally controller turns on correctly. It loses the voltage reading again after two more attempts so driving is again lost.
Controller ON is full battery voltage and the B+ and B- is solidly connected, the other parameters like revolutions, high level and low level switch is shown correctly. Don't understand what can cause the voltage reading to get lost,
? maybe someone with controller build knowledge can explain how the voltage sensing circuit might be designed ? maybe it's fixable.
Or is it done in the microcontroller? (ie non fixable)
View attachment 3View attachment 2View attachment 1
This is sooo extremely annoying. I've had too many controllers dying on me in these five years in the ebike world. Maybe i'll just quit building and buy an e-scooter or something.