# ESP32
**Model:** ESP32-WROOM-32E
**WiFi:** 802.11b/g/n
ESP32 is a development module sold by Espressif. They are pretty cheap, have Wi-Fi and Bluetooth and can be used for stuff like sensors or tiny computers running simple stuff.


Bluetooth player
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The builtin DAC outputs to GPIO25 (Channel 1) and GPIO26 (Channel 2). It is pretty low quality, 8-bit.


UART-USB converter
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See https://techoverflow.net/2021/11/19/how-to-use-esp32-as-usb-to-uart-converter-in-platformio/

See also
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* [ESP32-WROOM-32E data sheet](https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32e_esp32-wroom-32ue_datasheet_en.pdf)
* [ESP32-WROOM-32 pinout](https://detailspin.com/wp-content/images/zkw-esp32-wroom-pinout-arduino.jpg)

# Guides
* [ESP32 Dev guide](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/get-started/index.html) -> quickstart on esp-idf
* [Bare metal ESP32 programming](https://vivonomicon.com/2019/03/30/getting-started-with-bare-metal-esp32-programming/) -> going deeper without the esp-idf

# Projects
https://github.com/geo-tp/ESP32-Bus-Pirate protocol sniffer over GPIO

* http://www.tilde.club/~bokfink/esp32-bluetooth-audio-streamer.html -> Bluetooth streamer guide
* https://github.com/espressif/esp-usb-bridge -> serial USB bridge