Following is my prototype of control 230V AC circuit via GSM (SMS or Voice). This video shows AC 230 bulb can be switch on and off via SMS.
For this project I use Arduino mini pro micro controller, SIM900 GSM/GPS module and 5V to 250V relay. Following are circuit design. This design use two layers and you need to use double side copper board. With this design I am using 16X2 LCD as display unit. You can ignore it if you want.
For this project I use Arduino mini pro micro controller, SIM900 GSM/GPS module and 5V to 250V relay. Following are circuit design. This design use two layers and you need to use double side copper board. With this design I am using 16X2 LCD as display unit. You can ignore it if you want.
