https://stream.echo6.co/videos/watch/10cff857-7d41-42e0-aacc-eb5c70d355c9 Twitter: https://twitter.com/GreatScottLab Facebook: https://www.facebook.com/greatscottlab Previous video:http://youtu.be/-swETkSPyYM More project info on Instructables:http://www.instructables.com/id/Simple-Basement-Security-System/ Parts list (affiliate links): Aliexpress: 1x Arduino Uno (as programmer for Attiny85): https://s.click.aliexpress.com/e/_dUPNeN8 1x Attiny85: https://s.click.aliexpress.com/e/_d8xqinC 1x Reed Switch: https://s.click.aliexpress.com/e/_d8tIoDc 1x Key Switch: https://s.click.aliexpress.com/e/_d6zxguE 1x 12V Buzzer: https://s.click.aliexpress.com/e/_dWV8eG2 1x BC547 NPN Transistor: https://s.click.aliexpress.com/e/_dV0nlWa 4x 10kΩ, 1x 1kΩ, 1x 640Ω Resistor (1/4W): https://s.click.aliexpress.com/e/_dTPpXjt 2x 10µF Capacitor: https://s.click.aliexpress.com/e/_d7dOwRz 2x 0,1µF(100nF) Capacitor: https://s.click.aliexpress.com/e/_dU4FEsB 1x Push Button: https://s.click.aliexpress.com/e/_dXIIMcP 1x LM7805 (5V linear regulator): https://s.click.aliexpress.com/e/_dXSrfiP 1x DC Jack: https://s.click.aliexpress.com/e/_d6cVZVl 1x PCB (striped) : https://s.click.aliexpress.com/e/_dY2kgvt 1x Red LED 5mm: https://s.click.aliexpress.com/e/_dV63r7D In this video I will show you how to build a simple alarm system for you basement or any other room. I use a reed switch and a key switch as inputs for an Attiny85 to check whether an intruder has entered the room. Wed, 15 Apr 2026 09:24:49 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/10cff857-7d41-42e0-aacc-eb5c70d355c9 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.