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.