Help please? Power comes in pulses

[bigsacs]

Thank you thelarkbox, i'm working on the loss of magnetism from one or some of them. I've tried the smallest magnets l can find around the house and i can get them to stick at all 7 of them on the disk. I still have no idea how the 7 i've got correlates to it being a 12 pulse sensor?? I've also ordered tiny 1mm x 2mm magnets from eb*y and after nil response from NCM main dealers Leon Bikes in UK, Germany and Australia i found a replacement in Canada!! Good grief. So i hope to remedy the fault somehow. I'll post when l get any updates, thank you everyone for your assistance.

 

[thelarkbox]

Looking back a your pics,, is this a 'one piece' sensor you have split open??

And if none of those silver coloured lumps is magnetic at all I doubt they are magnets and perhaps used to interfere with even smaller magnets in static proximity to the sensors all encapsulated in the other half. yes i am guessing??



IF your into a deep rabbit hole dive - $5 arduino clone and the example hall sensor sketch.. wha wha wha !!!!

 

[thelarkbox]

Re-Read the earlier posts.. Yes, as @saneagle says its a standard 1 piece sensor and any similar shaped/configured sensor will work the same.. Just take heed of the wiring difference warning and confirm +5v, ground, and signal wires on the controller side before connecting any replacement,, so go get $3 ali express special

 

[bigsacs]

thelarkbox, thank you for the input and suggestions. The photo is of the magnetic ring which houses the magnets, I held iron nails close to them and there was attraction to each of them so l assume them to be magnetic. It snaps into place inside the sensor with the led blinking light. Its a rudimentary 5 plastic lug snap together type affair and comes apart with minimal effort however once on the bottom bracket shaft the sensor is stationary and the magnets spin in perfect alignment. I'm at a loss to understand why it fails to work properly. NCM in their wisdom?? have made the sensor and controller with soldered joins to make it almost tamper proof and then filled the controller with resin making access to the wires without damaging other parts nigh on impossible! If l cant get it to work i'll try an eb*y sensor and solder it in somehow or maybe connecting a throttle instead. Moral of the story is avoid NCM.

 

[thelarkbox]

Prices start at 59p

 

[bigsacs]

I'd never heard of them till now, thanks.