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YouTubeElektor TV
Square Wave from the Arduino Uno R4 DAC? Here’s How
This quick demo shows how to generate a 500 Hz square wave using the DAC on the Arduino Uno R4 — with just a few lines of code. By using the millis() function instead of delay(), we get more accurate timing. The DAC outputs 2V (value 102 at 8-bit resolution, 5V reference), flipping between 102 and 0 every millisecond to produce the waveform ...
3.1K viewsJun 5, 2025
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