M5Stack Atom Echo - ESP32 Development Board

The Atom Echo from M5Stack is a compact development board based on an ESP32 chipset. Among other things, it has Wi-Fi and Bluetooth. In addition, this module also has a built-in push button, microphone and speaker.

The board has a USB-C connection with which it can be programmed and/or powered (USB-C cable is not included). The programming languages UIFlow, MicroPython and Arduino are supported. 

With this Atom Echo module, music can be played from a phone or tablet using the bluetooth function of the ESP32. The module contains an RGB LED that shows the connection status of the bluetooth speaker. In addition, there is also a microphone with which sound can be recorded.

• ESP32-PICO-D4 Chip: 240MHz dual core, 600 DMIPS, 520KB SRAM, 4MB flash
• Programming languages: UIFlow, MicroPython, Arduino
• Input voltage: 5VDC
• Input current: max 500mA
• GPIO voltage: 3.3V*
• Input interface: USB-C, GROVE (I2C+I/0+UART)  
• 6x GPIO pins
• Built-in Wi-Fi and Bluetooth
• Built-in push button
• Built-in microphone
• Built-in speaker (0.5W - 8 Ohm)
• Built-in IR transmitter
• Built-in RGB LED for status display
• Record and Playback
• Size: 24 x 24 x 17 mm

Package contents:

• 1x Atom Echo

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

Note: Try to avoid the following situations with the Atom Echo:

1. Use DC output from the I2S channel
2. Playing white noise for a long time
3. Playing "Full square-wave audio"

See the following page for more information: Wiki