Turns a standard I2C LCD display into an audio spectrum visualiser! Audio signal is connected via the ADC input or via a USB connection to the Teensy. The Teensy displays the audio following FFT analysis using two 16-band displays made of custom LCD characters.
Code is here: https://github.com/little-scale/arduino-sketches/blob/master/LCD_FFT.ino
two row LCD display as stereo sixteen band spectrum pic.twitter.com/rbcdHzdv0M
— little-scale (@littlescale) June 6, 2022
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