Arduino For Kids: Tripwire Alarm

Arduino For Kids: Tripwire Alarm In this video we use an Arduino Nano, a Piezo speaker, an LED, a resistor, an LDR and a LASER diode to create a fun, cool, LASER Tripwire Alarm. The diode LASER shines a very narrow beam. The LDR receives the beam and the Arduino Nano monitors the LDR for any change. If the beam is broken, the Arduino goes into alarm mode and sounds an audible alarm and lights a red LED to warn of intrusion. You can download my code here: ****************************************************************************** 1. Autumn Promotions links: 2. Link to the special promotion for PCBs, 3D printing, and acrylic laser cutting: 3. PCBA Automotive Services promotion link: ************************************************************************* *Please help support this channel at NO COST TO YOU. If you shop on* *Amazon, please use this link: * *I will get a small commission and it costs you nothing. * ************************************************************************* HEY YOU ABOUT TO POST SOMETHING STUPID: Yes, I know my hands are large/fat. It's because of a heart condition I suffer from called Congestive Heart Failure. Here's a link to some information about CHF: One of the symptoms is that it causes fluid retention, mostly in the hands, feet/ankles, and face.. ------------------------------------------------------------------------------------------------------------------- Support learnelectronics: Amazon Store: If you are shopping for electronic components, test gear or consumables please consider visiting my Amazon shop @ Patreon: Please check out and pledge a dollar if you can. It will go a long way to keeping the channel alive. It costs a bit of money to buy all the items and produce these videos. Your help is appreciated. Paypal: you'd like to send a one-time donation you can use this link: --------------------------------------------------------------------------------------------------------------------- Gear I use: Multimeter: OWON B33 Oscilloscope: KIPRIM DS1202 Signal generator: Junctek JDS8080 Component Tester: T7 Multifunction Soldering Station: Sealody ???????