fechter wrote:The hall sensors on a Crystalyte are powered from the 12v regulator through a resistor. I forget the value of the resistor. When the hall sensors are connected, the voltage drops across the resistor. The motor halls in a Crystalyte motor are really hall switches, so the output is either high or low, no inbetween.
Most hall sensors are 'ratiometric', which means the output will be a percentage of the supply voltage over a fairly wide range. My guess is they will work at 5v, but it will be hard to know without testing. At 5v there is no real risk of blowing up the sensors. Running a 5v sensor off 12v could blow something.
If the actual hall sensors are visible somewhere, you could read the numbers off it and look up the specs.
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