Arduino Uno Guides
Step-by-step Arduino Uno projects with wiring diagrams, component lists, and ready-to-deploy code.
1 guide
Security
How to Build a Laser Tripwire Alarm Demo with Arduino
Build a classroom-safe Arduino beam-break alarm demo using a low-power laser, LDR photoresistor, 10k resistor, and piezo buzzer.
Beginner30 minutesArduino Uno
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