Constantinescu Radu - Multifunctional Windshield Wiper
Introduction
General Description
1. Arduino UNO
2. Push Buttons
3. Servo Motor
4. LCD Display
5. LED
6. Buzzer
1. Arduino UNO acts as the central unit that coordinates all modules, processes inputs, and controls outputs.
2. Buttons allow the user to control the operation mode and the wiper speed.
3. Servo Motor simulates the movement of the wipers, being controlled via PWM from the Arduino.
4. LCD Display shows information about the current state and operating mode.
5. LED provides visual feedback about the system's operation.
6. Buzzer delivers audible alerts during mode changes or when errors occur.
Hardware Design
Diagram
Electric Scheme
Bill of Materials
- Arduino UNO R3 - the microcontroller used;
- Push Button - basic arduino buttons used for changing the mode or actioning the wiper
- Servo motor SG90 - servo motor used for actioning the wipper
- ADIY Sensor - used for mesuring the humidity of the windshield
- Passive buzzer - used to alert the user that the wipper is working
- LCD Display - used to indicate the mode
- A0 – used for analog reading of the water sensor value
- A4/A5 – used for connecting the SDA/SCL lines of the LCD
- 2 – pin used for the mode change button
- 3 – pin used for the wiper activation button in manual mode
- 5 – used for PWM signal to control the buzzer
- 9 – used for the servo motor
Gallery
Software Design
Develompent Environment
The development environment used for this project was the Arduino IDE, which is easy to use, but also offers support for writing code using the registers and interfaces supported by the Arduino UNO.
External Libraries
| Library | Used for | Required because |
|---|---|---|
| Servo.h | Controlling the servo motor | Rotating/Moving a servo motor |
| avr/interrupt.h | Low-level interrupt control | Using ISR() and hardware registers |
| Wire.h | I2C communication | LCD is connected via I2C |
| LiquidCrystal_I2C.h | Displaying text on the LCD | High-level LCD control over I2C |
Used Interfaces - Lab Usage
- ISR - when actioning a button, an interruption is triggered
- PWM - for actioning the buzzer
- I2C - for dsiplaying the state
- USART - for debugging and console information
Source Code
Results
https://drive.google.com/drive/folders/123VwAVxQlJmBttF90n_Psw8wdLOVLCND?usp=drive_link
Download
Resources
