Hi
This has been done in the past but not for 5 years as far as I can find.
I want to make a speedometer using an Arduino and one of the hall sensors from a sensored brushless motor.
So far I have managed to solder a wire onto one of the hall pads inside the speed controller, when measured on a voltmeter turning the wheel by hand very slowly the meter read either 5v or very close to 0v.
I connected an Arduino to this wire and to ground using an interrupt to read the signals coming from the motor, I used an lcd display so I could see what was happening.
First I turned the motor by hand to establish the number of poles in the motor this worked fine one revolution and I had a reading of 22 to 24 it must be in there I will just have to make accurate marks to mesure one revolution.
I then started turning the motor using the throttle very slowly. That’s where everything went haywire the readings went rapidly into 4 figures and I had only done a few revolutions where have I gone wrong?
I know the cycleanalyst uses the same thing as I have another bike with the same controller on it and using the same connection.
Geoff
This has been done in the past but not for 5 years as far as I can find.
I want to make a speedometer using an Arduino and one of the hall sensors from a sensored brushless motor.
So far I have managed to solder a wire onto one of the hall pads inside the speed controller, when measured on a voltmeter turning the wheel by hand very slowly the meter read either 5v or very close to 0v.
I connected an Arduino to this wire and to ground using an interrupt to read the signals coming from the motor, I used an lcd display so I could see what was happening.
First I turned the motor by hand to establish the number of poles in the motor this worked fine one revolution and I had a reading of 22 to 24 it must be in there I will just have to make accurate marks to mesure one revolution.
I then started turning the motor using the throttle very slowly. That’s where everything went haywire the readings went rapidly into 4 figures and I had only done a few revolutions where have I gone wrong?
I know the cycleanalyst uses the same thing as I have another bike with the same controller on it and using the same connection.
Geoff