The main aim of this project is to design a real time wheel chair can be controlled with multiple methods.  This wheel chair consists of Android Bluetooth and MEMS technologies for controlling the directions of the wheel chair.  Wheel chair movement can be controlled in Forward, Reverse, Left, Right and stop direction. To control the wheel chair using voice commands using Bluetooth technology. In this project we are using HC-05 Bluetooth module to receives the voice commands from android voice app. To control the wheel chair by head movement using MEMS accelerometer and wireless RF technology. ADXL345 Tripple Axis Accelerometer Board is a small, thin, low power, 3-axis accelerometer with high resolution (13-bit) measurement at up to ±16g. Digital output data is format as 16-bit twos complement and is accessible through either an It measures the static acceleration of gravity in tilt-sensing applications. RF transmitter, mems and controller are attached to the cap. By tilting the head user can control the wheelchair wirelessly. Arduino will continuously read the data from HC-05 Bluetooth module and mems and based on that received command Arduino will control the direction (like left, right, front, back and stop) of the wheel chair through relays.        

Features:  

1. Design of real time wheel chair can be operated with multiple methods.
2. To control the wheel chair using mems and android voice commands.

         

The major building blocks of this project are:

1. Battery power supply.
2. Arduino Microcontroller.
3. Arduino nano.
4. RF transmitter and receiver.
5. DC motors with Relay driver.
6. HC-05 Bluetooth.
7. Android voice app.
8. MEMS.
9. Wheel chair.

       

Software’s used:

1. Arduino IDE for compiling and dumping code into Microcontroller
2. Express SCH for Circuit design.

       

                         

         

video: