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Thanks for your help.
Brian, that makes more sense now. I guess I need a better understanding of how the uC hardware can switch between being an input and an output. I assumed there was some kind of isolating in place to prevent the pin from acting as a ground.
Andre, what's the purpose of the...
https://www.sjsu.edu/people/burford.furman/docs/me120/FFT_tutorial_NI.pdf
NI has some good info: "According to the Nyquist criterion, the sampling frequency, Fs, must be at least twice the maximum frequency component in the signal. If this criterion is violated, a phenomenon known as aliasing...
Thanks, could you explain how switching the ground violates the maximum voltage and polarity ratings?
Also, I had tried using a P Channel mosfet, but the issue I had was the supply voltage is 9 volts, and the allowable DIO voltage is 5 volts. I couldn't figure out how to drop the voltage to the...
Hello, the issue I'm having with the circuit below is that the DIO pin is sourcing current while the push button is open. There are actually several push buttons that are arranged exactly as shown in the circuit below, but I've only shown one. The device is running on a battery, so I'm trying to...
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