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Accelerometer based Hand Gesture Controlled Wheel Chair with ATmega32 for Physically Handicapped

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In this project, we will learn How to design an Accelerometer based Hand Gesture Controlled Wheel Chair with AVR ATmega32 Microcontroller for Physically Handicapped. Here, we will use our hand gestures as input signals to drive the wheel chair in different direction and we will display the direction of movement of the wheel chair in a 16X2 alphanumeric LCD.

In our case, hand gestures mean tilt of hand in different direction. To detect different hand gestures, we will use the ADX335 accelerometer sensor. The sensor will be attached to our hand with some material or through a hand glove. The three output signals of accelerometer sensor are analog in nature and it cannot be processed directly by ATmega32 microcontroller. For this, we will use the ADC of the ATmega32 microcontroller to convert the analog signals to digital values. After converting the analog signals of accelerometer sensor to digital values, the ATmega32 microcontroller will process the digital values to find different gestures of the hand. Once the hand gesture is known, the ATmega32 microcontroller will send the required signal to the DC motor driver (L293D) of the wheel chair to drive the wheel chair in the desired direction. Also, the microcontroller will display the direction of movement of the wheel chair in a 16X2 alphanumeric LCD.

The control hand gestures for the wheel chair are forward tilt, backward tilt, left tilt, right tilt and no tilt to drive the wheel chair in forward, backward, left, right direction and to stop it respectively. Now, tilt your hand in different direction and drive your wheel chair as you want.

Control Hand Gestures

Wheel Chair Direction

Forward Tilt

Forward

Left Tilt

Left

Right Tilt

Right

Backward Tilt

Backward

no Tilt

Stop

 

Softwares Required

Hardwares Required

Name / Unit Price Quantity Total Price
AVR Trainer Board-100 with ATmega32
Rs. 730.00
1pc
Rs.730.00
AVR USB Programmer
Rs. 350.00
1pc
Rs.350.00
12V, 1A DC SMPS Adaptor
Rs. 130.00
1pc
Rs.130.00
RG1602A 16X2 Alphanumeric LCD Green
Rs. 150.00
1pc
Rs.150.00
3-axis Accelerometer Sensor
Rs. 350.00
1pc
Rs.350.00
DC Motor Driver
Rs. 200.00
1pc
Rs.200.00
Wheel Chair
Rs. 2000.00
1pc
Rs.2000.00
1 to 1 Connector-Female to Female
Rs. 4.00
4pc
Rs.16.00
LM7812
Rs. 10.00
1pc
Rs.10.00
10 to 10 FRC Female to Female Connector
Rs. 15.00
4pc
Rs.60.00
TOTAL Rs.3996.00

Circuit Diagram

Accelerometer-Based-Hand-Gesture-Controlled-Wheel-Chair-with-AVR-ATmega32-Microcontroller-Circuit-Diagram-1024x6922

Video

Connection Guide

The step-by-step connection guide for Accelerometer based Hand Gesture Controlled Wheel Chair with ATmega32 for Physically Handicapped is as follows:

  • Insert the DC Pin of 12V, 1A DC Adapter to the DC Socket of AVR Trainer Board-100.

    Steps - 1 ( 0f 14 )

  • Connect PortB header with LCD data header in AVR Trainer Board-100 with a 10 to 10 FRC Female Connector.

    Steps - 2 ( 0f 14 )

  • Connect RS, RW & EN pins of LCD control header with PD0, PD1 & PD2 pins of PortD header respectively in AVR Trainer Board-100 with 1 to 1 Connectors.

    Steps - 3 ( 0f 14 )

  • Connect the 16X2 Alphanumeric LCD to the LCD header of AVR Trainer Board-100.

    Steps - 4 ( 0f 14 )

  • Connect PortC header of AVR Trainer Board-100 with Input header of DC Motor Driver with a 10 to 10 FRC Female Connector.

    Steps - 5 ( 0f 14 )

  • Connect the 12V pin of PWM & Motor Voltage header of DC Motor Driver with the 12V header of AVR Trainer Board-100 with a 1 to 1 Connector.

    Steps - 6 ( 0f 14 )

  • Connect the wheel chair connector to the Output header of the DC Motor Driver.

    Steps - 7 ( 0f 14 )

  • Switch off the Mode Switch of DC Motor Driver.

    Steps - 8 ( 0f 14 )

  • Connect the X, Y, Z, VCC and GND pins of Accelerometer Sensor header of 3-axis Accelerometer Sensor with PA0, PA1, PA2, VCC and GND pin of PortA header of AVR Trainer Board-100 with a 5 to 5 Connector.

    Steps - 9 ( 0f 14 )

  • Connect the ISP header of AVR Trainer Board-100 with AVR USB Programmer header of AVR USB Programmer with a 10 to 10 FRC Female Connector.

    Steps - 10 ( 0f 14 )

  • Connect the AVR USB Programmer to the PC/Laptop's USB Port directly or with the help of USB AM-AF Cable.

    Steps - 11 ( 0f 14 )

  • Switch on the power with the help of Power Switch of AVR Trainer Board-100.

    Steps - 12 ( 0f 14 )

  • Download Accelerometer based Hand Gesture Controlled Wheel Chair with ATmega32 for Physically Handicapped Hex file to AVR Trainer Board-100 with the help of SinaProg Hex downloader and AVR USB Programmer.

    Steps - 13 ( 0f 14 )

  • Tilt your hand in different direction and see the output.

    Steps - 14 ( 0f 14 )

  • Insert the DC Pin of 12V, 1A DC Adapter to the DC Socket of AVR Trainer Board-100.

    Steps - 1 ( 0f 14 )

  • Connect PortB header with LCD data header in AVR Trainer Board-100 with a 10 to 10 FRC Female Connector.

    Steps - 2 ( 0f 14 )

  • Connect RS, RW & EN pins of LCD control header with PD0, PD1 & PD2 pins of PortD header respectively in AVR Trainer Board-100 with 1 to 1 Connectors.

    Steps - 3 ( 0f 14 )

  • Connect the 16X2 Alphanumeric LCD to the LCD header of AVR Trainer Board-100.

    Steps - 4 ( 0f 14 )

  • Connect PortC header of AVR Trainer Board-100 with Input header of DC Motor Driver with a 10 to 10 FRC Female Connector.

    Steps - 5 ( 0f 14 )

  • Connect the 12V pin of PWM & Motor Voltage header of DC Motor Driver with the 12V header of AVR Trainer Board-100 with a 1 to 1 Connector.

    Steps - 6 ( 0f 14 )

  • Connect the wheel chair connector to the Output header of the DC Motor Driver.

    Steps - 7 ( 0f 14 )

  • Switch off the Mode Switch of DC Motor Driver.

    Steps - 8 ( 0f 14 )

  • Connect the X, Y, Z, VCC and GND pins of Accelerometer Sensor header of 3-axis Accelerometer Sensor with PA0, PA1, PA2, VCC and GND pin of PortA header of AVR Trainer Board-100 with a 5 to 5 Connector.

    Steps - 9 ( 0f 14 )

  • Connect the ISP header of AVR Trainer Board-100 with AVR USB Programmer header of AVR USB Programmer with a 10 to 10 FRC Female Connector.

    Steps - 10 ( 0f 14 )

  • Connect the AVR USB Programmer to the PC/Laptop's USB Port directly or with the help of USB AM-AF Cable.

    Steps - 11 ( 0f 14 )

  • Switch on the power with the help of Power Switch of AVR Trainer Board-100.

    Steps - 12 ( 0f 14 )

  • Download Accelerometer based Hand Gesture Controlled Wheel Chair with ATmega32 for Physically Handicapped Hex file to AVR Trainer Board-100 with the help of SinaProg Hex downloader and AVR USB Programmer.

    Steps - 13 ( 0f 14 )

  • Tilt your hand in different direction and see the output.

    Steps - 14 ( 0f 14 )

Downloads

Accelerometer based Hand Gesture Controlled Wheel Chair with ATmega32 for Physically Handicapped
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