The main aim of this project is to design and construct a hand gesture movement-controlled device switching system for physically challenged. The user can wear MEMS accelerometer on any body part and through gestures they can control powered devices like fan, light, etc…,   Accelerometer is an electromechanical device that measures acceleration forces. These forces may be static, like the constant force of gravity pulling at our feet, or they could be dynamic - caused by moving or vibrating the accelerometer. MEMS accelerometers are one of the simplest but also most applicable micro-electromechanical systems. They became indispensable in automobile industry, computer and audio-video technology.   This project makes use of a Relay switch for switching the devices. The Microcontroller decides which device to be operated from the input it gets through the body gestures (MEMS Accelerometer sensor). The Microcontroller is loaded with an intelligent program written using embedded ‘C’ language.    

\

The main objectives of the project are:  

1. Simple hand gestures movement-based operation.
2. Hand Gestures movement-based device switching.

  The major building blocks of this project are:

1. Regulated power supply.
2. PIC Microcontrollers.
3. Crystal
4. MEMS accelerometer.
5. Reset Button.
6. RF transmitter and receiver.
7. Encoder and Decoder.
8. LED Indicators

  Software’s used:  

• PIC-C compiler for Embedded C programming.
• PIC kit 2 programmer for dumping code into Micro controller.

3. Express SCH for Circuit design.

Regulated Power Supply:

Block diagram:

             

video: