Quote:
Originally Posted by brVex
The Innovation First RC Reference Guide tells how connect a potentiometer to an Analog Input. He suggests the use of 250Ω – 100KΩ potentiometers.
I have a lot of 22R potentiometers and I would like to know if you can use them?
if not, why?
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Don't use them.
Your potentiometers have a resistance of 22 ohms. That will place a relatively high load on the sensor power supply. At 5 volts, it will be drawing more than 200 milliamps and constantly dissipating more than a watt of power. It will probably "work", but it's outside the recommended range of values by an order of magnitude.