Warmoon light cover + USB dynamo hub charging

thingiverse

A protective sleeve for the Warmoon MR16 light that secures using zip ties about 0.2 inches wide is created. https://www.amazon.com/Warmoon-Daylight-Dimmable-Spotlight-Equivalent/dp/B01DY1SO4A The designer of this sleeve aimed to make it waterproof, enabling its use in conjunction with the Sanyo NH-H27 dynamo hub for bike touring. Although the designer thought it fit well, they never actually used it. Easy modifications can be made to attach the sleeve to a handlebar or other bike accessories. Bonus dynamo hub USB charging: The Warmoon light connections can be unsoldered to create a USB charging outlet using just the socket and circuitry. This requires soldering a car cigarette-style USB charger correctly. Additional features like fuses for load protection can also be added. Note that discarding the light itself is necessary for this method, as the designer has not created something that uses both the light and the USB charging feature. The Warmoon's circuitry converts AC power from the hub to DC, while the cigarette charger regulates it to 5V for most USB devices. The designer acknowledges their inexperience with electronics and advises caution when attempting this setup. They have tried this before but could not determine if they were getting a net charge, although a cell phone did confirm that it was receiving power. The "Housing Final" design is crucial for housing the electronics needed to complete the dynamo USB charging setup, featuring a USB outlet on one end and a small hole for a charging LED indicator light. Zip ties about 0.2 inches wide are used to close the covers together, or hot glue can be applied for a secure seal.