esp32gong

ESP32 based Gong with embedded webserver, Audio/Sound player, OTA and more - e.g. for Sparkfun thing, Adafruit Huzzah32, and many others

features

• Webserver with GET/POST, multipart-mime upload and TLS support
• Webclient with TLS support
• Url/Querystring parser
• Captive webserver in Access Point mode (needs improvement for true captive capabilities)
• Responsive Web UI based on Phonon 1.4.5
• Data embedding (such as HTML, CSS, font files, audio...)
• WAV decoder (e.g. 8 or 16bit mono wav files 16khz work very well, but some other rates work too)
• Audio player to I2S devices (e.g. Adafruit MAX98357A)
• C++, ESP-IDF
• Wifi AP/STA mode (GPIO0 button will toggle mode)
• Stores config in NVS
• Storage class to wrap SPIFFS read/write access for storing uploaded files on flash on dedicated data partition
• ICMP Ping to Gateway address is used for a watchdog implementation that resets ESP32 in case of broken wifi

todo:

• mp3 support

screenshots

build

Updated to ESP-IDF 4.3. Works now also with Visual Code as editor and ESP-IDF plug-in.

• Setup ESP-IDF toolchain according to http://esp-idf.readthedocs.io/en/latest/
• run idf.py menuconfig
  • adjust flash to 4MB (assuming your ESP32 has at least 4MB flash)
  • change partition setting to custom and choose partitions.csv.
  • Sparkfun thing requires 26Mhz XTAL frequency (vs. 40MHz is default); Huzzah32 work fine at 40MHz

hardware

• SparkFun thing
• Adafruit MAX98357A
• Standard 3" speaker - 4Ohm, 3W e.g. https://www.adafruit.com/product/1314
• 3D printed case - download model from thingiverse

start

• once your ESP32 is flashed and started the wifi and webserver, it launches an accesspoint called "esp32gong" by default. connect to it and launch http://192.168.4.1/ to configure wifi and upload wav files.