shows us how to make some simple reed switches. Reed switches are simple components that detect a magnetic field and can close or open a circuit once detected. While not really a thing of beauty, these DIY reed switches should help you out if you just can’t wait to order some or you fancied trying your hands at making some components from scratch.
Reed switches normally come in very small form factors so if you need something small then this may not be for you however the video does show you on a macro scale the fundamental workings of a reed switch. To make your own reed switch you need only a few parts: some copper, enamelled wire and magnets. They really are simple devices however sometimes it’s easy to overlook how simple some things are when they are so small that you can’t really see how they work.
Making your own components from scratch is probably the best way to understand the inner workings of said component. In the past we have seen some pretty awesome self built components from these beautiful DIY Nixie tubes to even making your own LEDs
Posted in how-to, partsTagged component, components, how-to, magnetism, reed switch, reed switches, switches Post navigation← Wire-bots, Roll Out! 3 thoughts on “” Michael Black says:July 26, 2017 at 9:05 pm
Aren’t window switches for alarm systems reed switches? I would think so, but I’ve not looked. I was thinking that the plastic is there to make more mountable switch, and inside would be a small reed switch. And I figured those indow älarm switches would be readily available.
That’s not to say that there’s no value in doing ths.
Report comment Replymre says:July 26, 2017 at 9:41 pm
Yes older ones at least.
The magnet is mounted in the moving part (door/ window pane) while the Reed switch is in the non-interference frame.
It’s likely that modern units are hall effect.
It’s quite easy to fool a simple reed switch from outside to break in.
Hall effect switches at least have capacity for the Alarm to detect CHANGES in field, not simply presence or absence.
Report comment Replyanginere says:July 26, 2017 at 9:14 pm
LifeHackaDay strikes again ?
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