DIY Reed Switch

thingiverse

This is the housing that enables the reed switch to function properly. All you need is a spring, a pair of screws, some metal, and a rare earth magnet to get started. I designed this part for my WiFi garage door opener project, which allows me to monitor the state of the door remotely. Its performance is impressive, capable of detecting the presence of the magnet from as far away as 4 mm. The build process was enjoyable and rewarding.