Reference

Last revision 2025/12/17

This guide provides detailed information on setting up and using the DFRobot face recognition module with UART and I2C communication protocols, including wiring instructions and library support for seamless Arduino integration.

Library

Communication Protocol Description

The face recognition module supports UART and I2C communication methods:

  • UART: Baud rate 57600. Wiring: Connect RX, TX, VCC (use Arduino's analog port or I2C interface VCC), GND. Switch the communication mode dial switch to the UART end.
  • I2C: Wiring: Connect D/T (I2C data), C/R (I2C clock), VCC (use Arduino's analog port or I2C interface VCC), GND. Turn the dial switch for switching communication mode to the I2C end.

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