WHAT?
Design a low cost electromechanical system/device that includes:
Output display
Audio output device
Manual user input
Automatic sensor
Actuators, mechanisms and hardware
Logic, processing, and control
HOW?
Output Display - LCD Display & Light Strip
Audio Output - Speaker
User Input - Numeric Keypad
Automatic Sensor - Photoresistor & Ultrasonic Sensor
Actuator - 5V Relay & Solenoid Deadbolt
Logic - Arduino & PIC16F88
RESULT
Door locks when it's dark outside, if a vehicle departs from the garage, or when the star (*) key is pressed on the keypad
Speaker plays distinct sounds for correct and incorrect numeric sequence entry and when the lock actuates
LCD display shows current status of the system and the keypad numbers that have been pressed
LED strip surrounding the control box will initiate as various colors depending on the status of the system