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https://github.com/farhansadaf/wheel-chair
https://github.com/farhansadaf/wheel-chair
arduino mit-app-inventor
Last synced: 1 day ago
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- Host: GitHub
- URL: https://github.com/farhansadaf/wheel-chair
- Owner: FarhanSadaf
- License: mit
- Created: 2021-06-11T17:52:40.000Z (over 3 years ago)
- Default Branch: main
- Last Pushed: 2022-04-06T04:59:16.000Z (almost 3 years ago)
- Last Synced: 2024-11-11T07:39:58.164Z (2 months ago)
- Topics: arduino, mit-app-inventor
- Language: C++
- Homepage:
- Size: 9.31 MB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
### *A Low-cost Joystick, Gesture & Voice Controlled Smart Wheelchair*
### *Features*
- With a simple mobile application connected to the car by bluetooth, the car/wheelchair can be controlled using:
1. ***Joystick:*** A virtual joystick in the app.
2. ***Gesture:*** Using phone's built-in accelerometer. Joystick control is achieved by tilting the phone.
3. ***Voice command:*** Listens for Forward, Backward, Right, Left for direction control of the car.
Voice command can be triggered by shaking the phone.
- Direction control as well as speed control of the car.
- Shows distance of the backward objects & sends caution signal on the app for backward collison.
### *Mobile Application*
Mobile application was developed using [MIT App Inventor](https://appinventor.mit.edu/) which connects to the car via bluetooth.
##### *A demo of the application:*
Applocker
Connect bluetooth module
Joystick control
Gesture control
Voice control
Setting configurations
### *Hardware Requirements*
- ***Microcontroller:*** Arduino UNO
- ***Motors:*** DC motors (9V)
- ***Motor driver:*** L298N DC motor driver
- ***Bluetooth module:*** HC-05
- ***Ultrasonic sensor:*** HC-SR04
- ***DC power source:*** 9V battery / Power bank
##### *Connection diagram*
### *How to run*
1. Assemble hardware components according to [connection diagram](#connection-diagram).
2. Upload code `main/main.ino` to Arduino.
3. Install `wheel_chair_app.apk` on Android.
For iOS, import `wheel_chair_app.aia` in [MIT App Inventor](http://ai2.appinventor.mit.edu/) and read [this post](https://appinventor.mit.edu/blogs/evan/2021/03/04-mit-app-inventor-ios-app-store) for further instructions.
4. Connect to bluetooth module & play.
### *Basic working principle*
From the mobile application, commands are being sent as a 4 byte string.
The arduino programmed in the car responds to these commands by taking following actions:
```
--- Direction commands ---
For Joystick / Accelerometer
1 = Forward
2 = Right
3 = Backward
4 = Left
For Voice commands
5 = Forward
6 = Right
7 = Backward
8 = Left
```
```
Let a 4 byte string "XYYY" is received,
X = Direction commands.
YYY = Speed (0 - 100) / Timer for voice control in seconds.
```
```
For example,
"1023" = Direction is Forward (1) | Speed is 23.
"4100" = Direction is Left (4) | Speed is 100.
"5003" = Direction is Forward for speech (5) | Motor will run for 3 seconds.
"7010" = Direction is Backward for speech (7) | Motor will run for 10 seconds.
"0000" = Stop.
```
### *Results*
First prototype `Schofield`.
*Licensed under [MIT License](LICENSE).*