DougieLawson wrote: ↑Wed Dec 06, 2017 12:22 pmYou will need a ADC that can read between 0V and 3V3. With 3V3 as the reference voltage. You can do that with an Arduino (which give you a 10-bit ADC) or MCP3008 8-bit ADC (but it may not have enough resolution).
http://rasp.io/analogzero/ gives you a simple to use MCP3008 and the trivial code to drive it.
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