Make: Electronics Book Experiment 17 - Building an alarm system

This is part of a series of videos in which I try out some experiments from 'Make: Electronics', Charles Platt's excellent introduction to electronics.

In this video, Experiment 17 has me breadboarding a functional alarm system, which is then transferred to a project box to become a permanent project.

00:00 - Introduction
01:02 - About the alarm project
03:00 - Reed switch demonstration
04:24 - Alarm circuit explained
10:56 - Alarm test circuit demonstration
13:05 - The circuit for boxed project
16:27 - Soldering on the half-breadboard PCBs
17:29 - Last test before project assembly
18:13 - Preparing the project box for drilling
18:50 - Layout and wiring of project box
21:02 - Completed project demonstration
22:20 - Important note about project
22:31 - Outro

Links to book:
https://amzn.eu/d/cXyVlfW (UK)
https://a.co/d/i11zkxM (US)

You can find further information on the components used in this experiment in Volumes 1 and 2 of the 'Encyclopedia of Electronic Components':
Vol 1: https://amzn.eu/d/1lzEccv (UK)
https://a.co/d/4S3oVfm (US)
Vol 2: https://amzn.eu/d/4QuPQL9 (UK)
https://a.co/d/5wyCFtg (US)

I'm not associated with, incentivised by, or paid the publisher or author, I'm just a hobbyist sharing my experiences of the book.