Gav from Shrewsbury needs help with new controller

[Gavb]

By the way, it was mentioned somewhere that there will be 3 out of 36 possible combinations that will result in forward movement. I have 6 working combinations all spinning forwards. Other combinations span forward too but made interesting noises. 6 were all ok but some made the wheel spin much faster than others. Is that normal? Do I need to test the current of all 6?

 

[Gavb]

Great news! Made the shunt connected up my multimeter and got some readings. 3 were initially much higher (5.0+ mv) then setttled down. These were the false positives that you mentioned I think

The other 3 readings were all very similar. Full throttle initially and all went up to 1.8mv initially and all settled to flicking between 0.13/14mv. So how do I choose which one of the 3 if they are all measuring about the same?

 

[Deleted member 4366]

You can choose any of them then, since they work OK. There should always be three good combinations.

 

[Alan Quay]

Well done Gav, glad you have it fixed.

 

[Gavb]

I just made a new shunt out of longer and slightly thinner wire and I have got slightly different readings between the 3 good combinations now. Readings were between 0.72 and 0.80mv for one combo and the other 2 were flicking up and down from 0.75 to 0.90. I have gone with lowest option. Thank you so much for all of your help. I have my bike back up and running!

My only concern now is that I have done something to my hub motor as when it comes to a halt it has started squeaking for the last few slow rotations. When i push my bike forward the motor is also slightly squeaking.

 

[Deleted member 4366]

Are you sure it's not the brake?

 

[Gavb]

No it is not the brake. disconnected the brake cable so no contact with rims. Def. coming from hub motor

 

[Deleted member 4366]

There's nothing that you could have done to spoil your motor. There's probably a washer touching somewhere. Nothing to worry about. It'll soon go away.

 

[jackhandy]

Useful thread _ Thanks

 

[Gavb]

I would just like to say thanks to all who offered their advice. My bike is back up and running and I have happily commuted to work and back with no problems. I have learnt a lot in only a few days. Many thanks again.