This project done with an AVR microcontroller and SIM900A GSM module controls a light bulb with SMS.Turn any AC load ON or OFF by texting 'ON' or 'OFF'
Arduino based school attendance logger with RTC and GSM module. The system keeps record of students' attendance and sends SMS to parents every time they enter and leave the class.
Here we make a T-shirt embedded with a lilypad arduino, HC-05, toggle switch and battery. You can control AC loads remotely with this. It is based on Master-Slave operation of HC-05.