Questions tagged [analog]

Electronic devices with a continuously variable signal. The term "analogue" describes the proportional relationship between a signal and a voltage or current that represents the signal.

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Can't figure out source of interference reading 10k POTs with 74HC4051

I realize this gets asked a lot, but I feel like I've applied the most common fixes without success. I have 10 10k potentiometers plugged in to an arduino via a custom shield. 2 are wired directly to ...
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ADC register always returning high

Regardless of whatever voltage at A0, the software is always returning high (1023) volatile unsigned char* ADmux = (unsigned char*) 0x7C; volatile unsigned char* ADCSRa = (unsigned char*) 0x7A; ...
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How to Measure many voltages (Uno) - Analog extenders a good option?

I am trying to make a battery capacity tester (3.7v li-ion 18650 battery) using arduino uno. If possible i'd like to test 20 or more batteries at the same time. I need to measure the voltage of each ...
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Is AREF a stable output Ref voltage with analogReference(INTERNAL)

I'm using an analog input on a NANO board to measure the midpoint between two photo resistive (Cadmium) cells, with the two outside ends tied to GND and a source voltage. Basically a simple voltage ...