• D2/D3 or D4/D5 Serial to SIM808
  • D6/D7 - Relay
  • D8 - SIM800 BOOT
  • D13 - PROG LED

  • FTDI FT232RL cable match programming pins on top-left:
    • DTR TXD RXD +5V – GND

hardware Setup

  • arduino pro mini 5V/16M
  • SIM800 software serial port, selected by SMD jumper: D2 + D3 or D4 + D5
  • pull D8 pin to HIGH for at lease 2 seconds, and then LOW to boot SIM800 module
    • SIM800 Network LED should start to link

Demo Code

  • https://github.com/Edragon/Arduino-main/tree/master/Sketchbook/RF/NGS1072
  • Please use as a refernece, the repository may need sort out.