Microswitch (without lever)

thingiverse

This is a revolutionary open-source 3D printed microswitch, pioneering a new series of common electronic components designed to empower makers and hobbyists who demand speed and efficiency in their DIY projects. To stay ahead of the curve, they can download and print out components instantly, bypassing tedious trips to the store or waiting for deliveries. For the latest updates on this project, visit Hackaday IO here: https://hackaday.io/project/9942-opensource-3d-printed-electronic-components. PLEASE BE ADVISED THAT WE ARE STILL TESTING THIS PROTOTYPE AND URGE YOU TO EXERCISE EXTREME CAUTION WHEN ATTEMPTING TO USE IT. This microswitch is intended for experimentation purposes only, and you should anticipate it will fail or even catch on fire due to its untested nature. Do not integrate it with your new 3D printer or leave it running overnight. Manufactured microswitches are engineered to withstand up to a million reliable cycles, whereas ours has an unknown reliability profile. The microswitch requires a single strand of 1mm steel wire to create the contacts and a 5mm dowel (disposable chopsticks work perfectly) to wind the steel wire around and create the spring mechanism. Once this project is thoroughly tested and refined, we will publish an Instructable for your reference. If you're feeling adventurous and have about 20-30 minutes to spare, feel free to give it a try! The SketchUp file is included, allowing you to customize and improve it as you see fit. Electrical engineering experts who spot obvious flaws or safety issues are encouraged to comment below. Print Settings: Printer Brand: Ultimaker Printer: Ultimaker Original Rafts: No Supports: No Resolution: 0.3mm (or higher for optimal results) Infill: 20%-100% Notes: To ensure smooth operation, you may need to sand or file the groove and button mechanism a bit. Once you've done so, it should work reliably. However, if it continues to jam, carefully and patiently file it some more until it functions properly. Design Inspiration You can find diagrams online of typical microswitches (https://en.wikipedia.org/wiki/Miniature_snap-action_switch). They utilize complex reeds and spring mechanisms in mass production that would be challenging to replicate in a standard workshop or makerspace. Instead, we aimed to copy an existing design as closely as possible while incorporating a spring made from 1mm steel wire. We are still testing it, but continuity on a multimeter has already demonstrated that the mechanism works.