How to change the serial port for Cactus Micro
Cactus Micro communication with ESP8266 with SoftwareSerial port (RX: 11, TX: 12) default. We can change it to the hardware serial port Serial1.

Prepare tools

  • A knife
  • A Solder

Soldering the jumper

Step1. Cut the jumper in the red square

cut jumper

Step2. Soldering the jumper to other side


You’re done. Now the Cactus Micro communicate with esp8266 by hardware serial port Serial1.