see attached drawing of an oil damped pendulum that uses a ratiometric hall sensor [ 503] to sense the pendulum position [ tilt sensor] I use a polulo simple motor controller [SMC] to power an electric actuator to adjust a platform according to any sensed imbalance .
My problem is getting the SMC to communicate with the hall sensor.
I have a good voltage signal out of the Hall sensor but the SMC wont accept it on its analog pins.
It works fine with a potentiometer but why not with a hall sensor output signal?
The hall sensor seems to be similar to a pot and appears to be putting out a suitable signal.
Any assistance ?
Thanks Rod
Hello @rod 
Seems like you forgot to attach a drawing, because it is not visible
BTW, some basics about Hall Sensor can be found here: http://www.bristolwatch.com/hall_effect/ratiometric_hall_effect.htm
sorry its now downloaded. The problem is with the communication between the hall sensor and the polulo simple motor controller. I have read all I can find but nothing about if the Hall signal is a suitable replacement for a potentiometer to provide the signal. I spoke to Polulo technical and they ’ did not see any reason why it would not work’… As long as no voltage exceeded 3.3v so, I made sure this was the case. I also powered the signal from an external power source [ as allowed in the users guide]. This signal from the hall sensor WAS recognised but could not be scaled because the readings were "out of range’
I have no luck despite concentrated efforts Cheers Rod
Nice scheme @rod
Maybe you could also take a photo of your wiring, so we can make sure that problem is not in that?
One of the options also could be that your Hall sensor is broken, so replacing it with another could be your last option.
Now tell me also, what is your voltage on power supply of the Hall sensor? It should be between 4.5 to 6V I think.