LilyGO TTGO Tm Music ESP32 - with 2.4 inch TFT Display

The TTGO TM from LilyGO is a microcontroller based on an ESP32 with a built-in 2.4 inch TFT display, a micro SD card connection and a DAC. Therefore, an audio player can easily be made with this board. The USB to serial converter makes it easy to program, even as an Arduino. The board has a micro USB connection with which it can be programmed and/or powered (micro USB cable not included).

Specifications:

• ESP32 chip (240MHz dual core processor)
• Flash memory: 4MB
• Built-in Wi-Fi
• Built-in Bluetooth
• Built-in 2.4 inch TFT display (ST7789)
• Built-in DAC: PCM5102A
• USB to serial converter: CP2104 or CH9102
• Built-in Li-ion/Li-Po battery charging circuit: TP4054 chip can charge up to 500mA
• Built-in micro SD card connection
• I2C connector: 5p JST-PH (still needs to be soldered)
• I2C cable included
• Battery connector: 2p Molex Picoblade
• Battery cable included
• Dimensions PCB: 74.3x48.7mm

See the following page for more information and to get started with the board: TTGO-TM

To turn the TTGO TM into a Bluetooth audio player, install the following library: A Simple Arduino Bluetooth Music Receiver for the ESP32. Then upload the following code via the Arduino IDE to the TTGO TM:

#include "BluetoothA2DPSink.h"

BluetoothA2DPSink a2d_sink;

void setup() {
  static const i2s_pin_config_t pin_config = {
    .bck_io_num = 26,
    .ws_io_num = 25,
    .data_out_num = 19,
    .data_in_num = I2S_PIN_NO_CHANGE
  };
  a2d_sink.set_pin_config(pin_config);
  a2d_sink.start("My TTGO Tm Music");
}
void loop() {
}

The board is now discoverable as a Bluetooth device as "My TTGO Tm Music".

To program the board with the Arduino IDE, select the 'ESP32 Dev Module' in the board manager.

Note: The pins on the board are directly connected to the ESP32 chip and are therefore only suitable for 3.3V signals.