Simple tiltable snap-in frame for G4-type LED lamps

thingiverse

This DIY lighting solution focuses on illuminating a RepRap's print bed using simple, yet flexible design. The lighting system consists of a tiltable and rotatable frame that accommodates inexpensive G4 type 12V SMD LED lamps. Available in 6-led, 9-led, and 12-led versions on eBay for around $1 each, these circular PCBs with 5050 SMD LEDs can be easily mounted onto the frame. The frame itself is made up of two printed parts - the LED holder and the base - joined by a conical hinge to adjust the angle as needed. Screw holes are provided in case a firmer grip is required. Proper cooling is ensured through air circulation around the LED carrier, while a central screw hole allows attachment to any flat surface. The lamp can also be rotated for full angular coverage with a washer and non-tight screw. A cable feeding hole is included on one corner of the frame. To install, simply snap in the LED carrier into the holder, possibly unsoldering lateral G4 mounts and soldering wires directly to solder pads if needed. The provided SCAD file allows parametrized modifications for individual needs or larger 15 or 24-led carriers. STL files are available for 6-led, 9-led, and 12-led versions, with an additional STL file for the 22mm version due to some new batch issues. Despite its initial purpose, this lighting system has proved useful in various other settings as well.