Throttle for 3.3v torque sensor bike

[pdarnett]

I'm trying to add a throttle to a torque sensor only bike. The sensor has three wires, a 3.3v supply, a ground and a signal. Shorting the supply and the signal give me wide open throttle but connecting a standard Hall effect throttle doesn't work at all. Is there such a thing as a throttle for 3.3v supplies?


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[Deleted member 4366]

First, try is a 5K or 10k linear pot on the three wires. That will allow you to study the response curve. A 5v throttle gives an output of between about 1.2v to 3.8v. The SS49 hall sensor's spec is 4.5v to 6v, which might be why it doesn't work.

If the pot works, you could try changing the hall sensor in the throttle to an Allegro A1318 or A1319 or similar. They're 3.3v sensors.

 

[pdarnett]

That was my next port of call to change the hall. Also I've left the sensor in cct and that may be pulling the voltage down. I may have to build a little impedance matching cct like I did with my metro.


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[pdarnett]

These guys reckon the ss45e works at 3v? http://pages.ebay.com/link/?nav=item.view&alt=web&id=281782377861&globalID=EBAY-GB


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