This project acts as a security system with a password using the keypad. The LCD prompts the user to 'Enter a Password'. The RGB LED changes from red to green depending on if the password was entered correctly or not. Keys such as ‘A’ ‘B’ ‘C’ ‘D’ will display 'Invalid key' on the LCD. A servo motor is included to imitate a door opening when the correct password is inputed.
Arduino UNO R3 Controller Board
Arduino UNO R3 USB Power Cord
Arduino IDE Software
Female and Male Jumper Wires
1kΩ Resistors
LCD display module (16 x 2)
Keypad module
RGB LED module
Servo module
LCD display: This is a 16-character 2-line glass display with a serial interface
Keypad Module: This is a 16-button keypad that provides tactile input into a program/computer
RGB LED: This module outputs red, blue and green in a colour fade/mix effect
Servo Module: A Servo module rotates its shaft to a set position, between 0 and 120 degrees
Built using a physical Ardiuno UNO kit, then recreated on TinkerCAD using an Arduino Uno R3 for demonstration purposes
Click here to see code!
Program start:
After valid user input:
After operation is executed:
Click here to see TinkerCAD model!
Name: Julia Viol
Email: [email protected]