ESP32 MusicBox

This project provides an ESP32 based music box with the following features:

• Simple 3-button control
• MP3 playback
• Integration with I2C RFID tag scanner
• Support for WiFi Grids with auto-reconnect to nearest access point
• MQTT status reporting / remote control
• Home Assistant integration with device autodiscovery
• Web-based user interface
• Integrated into your local network with SSDP / mDNS protocol
• WebDAV support for file / content management
• Optional Bluetooth A2DP output / Bluetooth Headphone output
• Special mode to start in Bluetooth Speaker mode, so it works as a Boombox.
• 3-band equalizer

Supported hardware

• ESP32 (tested with Lolin D32 Pro with a lot of PSRAM recommended (8 MB), 4MB flash RAM is required)
• PN532 RFID Reader (i2c-Mode)
• SDCard Reader (SPI-Mode), is already mounted on a Lolin D32 Pro board
• NeoPixel / WS2812 based LEDs for status visualization

Final product

The KiCad 9.0 project is located in the kicad folder.

Here is the wiring schematic drawing:

Manual

Status visualization with LEDs:

• Boot-Sequence - LEDs enabled step by step to visualize boot progress
• Leds cycling in brightness - orange in case WiFi is not connected but enabled, green in case if playback paused or no playback yet
• Leds green from 0% to 100% filling the circle - Playback progress while playing something
• Leds blinking red - Unknown RFID card detected
• Leds blinking green - RFID card programmed / Known card detected
• Leds green to red - While changing volume
• Keep button 1 pressed during startup. Leds will turn blue to indicate Bluetooth Speaker mode.
• Yellow flashing LEDs indicate a Bluetooth pairing request while in Speaker mode. Press button 1 again to confirm the pairing. LEDs will flash in blue to confirm pairing
• Keep button 1 and button 2 pressed during playback to start from beginning