Скачать или смотреть How to control relay module with SMS or text messages

Send self coded SMS command to Nano then use Nano pinouts as switch or signal inputs for Relay module, Uno with 8 Ladder Programmable Outputs or Mega (16 Ouputs ) as micro-PLC.

Hardwares and softwares needed:

Basic or without Uno Board
-"Arduino IDE" from playstore
SIM800L module
Code (for sms control)
Arduino Nano board
Relay module
Adroid to USB 2.0 serial port cord
Jumpers or Connectors

With Uno Board
-"Arduino IDE" from playstore
SIM800L module
Code for SMS control
"PLC Ladder Simulator Pro" from playstore
Code for converting Uno to PLC
Arduino Nano board
Relay module
Adroid to USB 2.0 serial port cord
Android to Uno port cord
Jumpers or Connectors
Arduino Uno board
HC05 Bluetooth module