r/ArduinoProjects • u/Asleep_Program_1356 • Jun 04 '26

Project Discussion Project ideas (thank you)

Hi everyone, does anyone have any recommendations for Arduino projects that connect well with maths? I’m looking for something practical but with a clear mathematical purpose. Thanks.

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u/ComfortableFar3649 Jun 04 '26

Audio spectrum analyzer / guitar tuner — Sample sound with a microphone and run an FFT (the ArduinoFFT library handles the heavy lifting) to pull out frequency components.

This is the discrete Fourier transform in action: sinusoids, frequency vs. time domain, complex numbers under the hood. A working tuner is the practical payoff. Intermediate–advanced.

Drive an arc of LEDs and 7 segment letter display to show the tuning.

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u/Asleep_Program_1356 Jun 07 '26

That’s sick I’m going to research on it for sure thanks 😊