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David Gwilliam
2026-02-12 21:00:02 -08:00
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commit 8bdbf227ca
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libraries/audio-tools/examples/examples-stream/streams-generator_fromarray-analog/README.md Normal file
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# I2S Analog Output Test
This is a simple basic test for the ESP32 __analog output__ using I2S.
We just send a generated sine wave and expect to hear a clean signal.
Please note the log level should be set so that there is no disturbing output!
### Output Device: Piezo Electric Element
To test the output I am using a piezo electric element
![DAC](https://pschatzmann.github.io/Resources/img/piezo.jpeg)
It should also be possible to connect a headphone to the output pins...
On the ESP32 the output is on the Pins GPIO26 and GPIO27
| PIEZO | ESP32
| --------| ---------------
| + | GPIO25 / GPIO26
| - | GND