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Topic: Can Arduino Mega 1280 get input from more than 16 potentiometers? (Read 305 times) previous topic - next topic

SpaceOne

Can Arduino Mega 1280 get input from more than 16 potentiometers?

The Arduino Mega 1280 has 16 analog inputs, can the digital in/out be used to get data from potentiometers?

I need to get data from 25 potentiometers.


pylon

You can use a few digital outputs and an external analog multiplexer to switch multiple analog sources to a single analog input of the Arduino. The Arduino's analog inputs do the same by the way, they just have an internal multiplexer.

Example: http://playground.arduino.cc/learning/4051

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