How does the ESP32 DAC cosine generator waveform look on an Oscilloscope?
The ESP32 DAC has a built-in cosine waveform generator. Even though it’s an 8-bit DAC, the waveform looks pretty clean.
For an example on how to generate this wavefrm in firmware, see How to use the ESP32 DAC sine/cosine waveform generator using Arduino / PlatformIO
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Electronics, ESP8266/ESP32
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