DAC, is a unit with the ability to convert digital signal to analog signal (voltage waveform signal) with support for audio waveform and more. It integrates a 12-bit high resolution DAC chip named MCP4725 which has an on-board non-volatile memory (EEPROM). The unit communicates with the M5Core using the I2C protocol.

The DAC input and configuration data can be programmed to the EEPROM in order for the data to be saved after reboot or system shutdown.

The device I2C address is 0x60 by default unless changed manually.

Product Features

  • Up to 12 bits of resolution
  • Output 0~3.3V voltage GROVE interface, support UIFlow and Arduino
  • Two Lego-compatible holes


  • 1x DAC Unit
  • 1x Grove Cable


  • MP3 Audio Player
  • mini Oscilloscope


Resources Parameter
Resolution 12 bit
voltage range 0-3.3V
Communication protocol I2C: 0x60
Net weight 4g
Gross weight 19g
Product Size 32.2*24.2*10.3mm
Package Size 67*53*12mm


download EasyLoader

1.EasyLoader is a simple and fast program burner. Every product page in EasyLoader provides a product-related case program. It can be burned to the master through simple steps, and a series of function verification can be performed.

  1. After downloading the software, double-click to run the application, connect the M5 device to the computer through the data cable, select the port parameters, click "Burn" to start burning. (For M5StickC burning, please Set the baud rate to 750000 or 115200)
  1. Currently EasyLoader is only suitable for Windows operating system, compatible with M5 system adopts ESP32 as the control core host. Before installing for M5Core, you need to install CP210X driver (you do not need to install with M5StickC as controller) Click here to view the driver installation tutorial






The code below is incomplete (just for reference). To get the complete code, please click here


Feature Introduction

Perform DA conversion and output voltage, up to 3.7V

  • output voltage save Output voltage 0-3.3, and confirm whether to save to EEPROM

  • output voltage with raw data save Output voltage 0-4096, and confirm whether to save to EEPROM


Last updated: 2020-12-11