09 - Lock Box
This project will show you how to make an alarm that will sound if your lockbox is open without first entering the correct code.
What Are We Creating?
LOCK BOX PARTS LIST
The Matrix Keypad
Resistor Codes
Step 1 - Connect the UNO R3, Buzzer, LDR, and Potentiometer
Step 2 - Connect the Keypad
Step 3 - Connect the LCD Screen
Step 4 - Place Components Inside the Box
New External Library
Lock Box Programming
Complete Code
Does It Work?
Monthly Challenge
Exercises
Downloadable PDF Instructions
NEED HELP? Questions, answers, comments
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