Generic True Wireless Earphone Charger

prusaprinters

After losing several charging cases for various pairs of true wireless earphones, after their cases slid out my pocket commuting to work, I was left with perfectly working earphones but no way to charge them.I made this generic charger that should be able to charge multiple types of earphones. This is made possible by using a sliding switch that adjusts a movable charging contact point so that it can be aligned to location where the corresponding contact point is on the earphone. To make the charger, I designed a 3D printable case to hold the components of a headphone charger I bought from eBay and took apart. The headphone charger was marketed as a “Charger For B&O Bang & Olufsen BeoPlay H5 Headset” (https://www.ebay.com.au/itm/394039725372). This charger also came with magnets to attract the headphone to the charger, so I made the design to use the same magnets.  The device is comprised of three parts. The base, the top and the sliding switch/mobile contact holder. The base, in which the 2 mm brass inserts are placed and the main circuit can be glued to. The top, which also requires the use of brass nut inserts that can be fit with a soldering iron to hold one of the contacts in place and to hold a screw on which the adjustable contact mechanism slides. The third part being the sliding switch, which also holds the magnet.This design needs improvement, so I am uploading with the Fusion360 file so that the community can easily re-mix and add improvements. The following non-printed components are required: 4 x 2 mm Diameter Brass Insert Nuts2 x 3 mm Diameter Brass Insert Nuts 4 x 20 mm M2 hex screws 1 x 20 mm M3 hex screw1 x 10 mm M3 hex screw