I'm researching the LM567 tone decoder circuit and find that I will need four circuits for a project. I'm wondering if an Arduino would better suit my needs.
I have an Arduino hooked to a decoding circuit now that works in this way:
Three frequency pairs are used to initiate three different functions. Frequency A is active for .5 seconds then frequency B for 2 seconds in secession. The decoder has an output that goes low for .5 seconds. This activates a function on an arduino via an input pin. Frequency A and frequency C initiates a different function. Frequency A and frequency D initiate a third function.
Can Arduino be used to decode these frequencies and then run the corresponding function. My project could be reduced to just a single Arduino Uno.
I've seen some examples on the internet using circuitry that could be on a shield protoboard to convert the sine wave to a square wave. Then the Arduino counts the pulses, but that programming is way over my head.
