Finger Controlled Wheel chair

Published on 19 May 2022. Written by Tej Kumar

Generally Old and Physically Handy-capped people face trouble in moving from one place to another place. Though they use supporting stick or wheelchair, they need to give some force to move the chair or they need someone to move the chair. Through this project, you are going to create a unique wheelchair which can be controlled with the finger movements.

You will need an Arduino Uno board for interfacing microcontroller with the Flex Sensors . The flex sensors are attached to the glove. These sensors will detect the bending of the fingers. So with help of Flex Sensors.

You will program the microcontroller in such a way that say whenever you bend your fingers, the flex sensors will give some voltage which is reduced by voltage divider circuit, and compared with a reference value. Based on the condition specified in the programme, your wheelchair will move in a specified direction. You can also innovate the system further into Voice Controlled Wheelchair by using a Creating an android app.

Project Description:

Arduino/Genuino Uno: The digital and analog input/output pins equipped in this board can be interfaced to various expansion boards and other circuits. Serial communication interface is a feature in this board, including USB which will be used to load the programs from computer.
Flex Sensors: Flex sensors are passive resistive devices that can be used to detect bending or flexing. Flex sensors are resistors that can be used to detect bending. A bi-directional flex sensor decreases its resistance in proportion to the amount it is bent in either direction.
DC motors: These motors works with DC power as name indicates itself. So these motors will convert the DC Electric power in Rotating Mechanical Power.
Motor Driver: Generally the Arduino board is not capable of providing the required amount of current for running the motors. So we use a device called Motor Driver which will provide sufficient current for driving the motors.

Project Implementation:

Prepare four Flex sensors for four directions
Attach those Flex sensors to glove and wear the glove in such a way that one finger bending should bend one flex sensor
Interface the Flex sensors and DC motors with the Arduino board
Upload the code
Test the chair by bending your fingers

Software requirements:

Arduino IDE : You will be needing Arduino IDE software to write and upload the programming logic onto the Arduino Uno board
Thingspeak : Also, you need to create an account in the ThinkSpeak IoT platform to integrate the system onto the cloud and store the data online

Programming language: Arduino Programming (C++)

Kit required to develop Finger Controlled Wheel chair:

Technologies you will learn by working on Finger Controlled Wheel chair:

Finger Controlled Wheel chair

Project Description:

Project Implementation:

Software requirements:

Any Questions?

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