Rear Bike Light
Print Profile(1)
Bill of Materials
Description
Simple, clean, compact DIY alternative to commercial rear lights. I used a short piece of Bambu Lab 5 V 6500K white LED light strip (3 LEDs), but any standard LED strip should work. This light was designed for use with a Bafang motor kit, which provides a 6 V / 500 mA output for lighting. To safely power a 5 V strip, I used two 1N4007 diodes in series to drop the voltage to a ~4,8 V.
The housing is made up of four parts for easy printing, assembly and future modular upgrades:
- Main light enclosure
- Mounting base – connects to the light enclosure
- Mounting adapter – attaches to mounting base and bike
- Lens cover – Diffuses light and is best printed with red filament
Printing Recommendations:
- Use PETG or ASA for strength, UV, and weather resistance
Assembly Notes:
Assembling this light requires some basic soldering skills and equipment, LED strip, 2-wire cable (max ⌀ 3,5 mm), CA or epoxy glue, 20 mm M3 hex bolt, M3 nut and another M3 bolt + nut or zip ties for attaching the light to your bike. Check attached assembly guide.
April 19, 2025:
First release
Check my other household items here!
Appreciate your feedback and suggestions — happy riding! 🚲
Documentation (1)
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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