Led Lamp for Prusa Mini 3D Printers

I present to you the design of the lamp, which I successfully use together with Prusa Mini 3D printers. I was looking for a suitable lamp that would illuminate the print area during many hours of printing. This lighting is simple to make and is powered by DC 5V voltage using unnecessary cables for phones and power supplies. The opening of the lamp arms  can be adjusted as if in scissors.  The holes in the housing do not allow the Z-axis motor in the printer to overheat. After putting the lamp on the engine, you no longer need to screw anything.

NOTE!

You will need basic skills on soldering wires, the voltage you will have to deal with is only 5 Volt, but improper connection may cause a failure of the power source (eg USB socket in a laptop)

For assembly will need:

·       Printed elements of the lamp (I printed PETG, but other materials can be used, 0,2mm layer)

·       2x LED COB 5V on aluminum plate, 120x8mm

·       2x Aluminum heatsinks for LEDs, 200x14mm

·       1x Thermally conductive adhesive

·       1x Used cable from phone charger (with USB port)

·       4x Led connection cables (2x 20cm, 2x25cm)

·       1x Key switch, (I will use with 3 contacts, then you can solder all the wires to the switch)

NOTE!

You can use 12V COB LED strips, e.g. 120x10mm, then you have to deal with another power source.

Print all elements,(1x body, 1x screw, 1x nut, 2x arms). Pay attention to print the double screw with supports, the rest of the elements will do without it.

Resolution 0,2mm, 2 perimeters, PET-G.

The LEDs I gave can be powered by 3 or 5 Volt, pay attention to solder the wires from the 5V side.

Measure out 2 pairs of wires, 20 and 25 cm long, cover the tips slightly with tin.

Solder them to both Leds. If you want, put a heat shrink tube on the end of the led

If you use an unnecessary phone cable as a power supply, cut off the end of the mini/micro USB cable. Then you will have 4 wires. Leave red (+) and black (-). Make sure the polarity is correct. Put on them some tin.

Smear the Leds thinly with thermally conductive glue, slide the Leds into the heatsinks, press and leave to dry (I waited 3 hours).

Slide the leds in the heatsinks into the printed arms. Notice that you slide one in the opposite way like the other, so that later they shine in the same direction. For now, do not twist everything yet.

Insert the USB cable into the marked hole, the wires from the LED lamps to the other, pull out through the top (in place of the switch). Solder everything according to the scheme. Do not miss the polarity (+) and (-).

After soldering, slide the switch into place.

Screw the double-sided screw into the hole on the top of the case, at the other end input the arms, so that there is no collision between them.

Congratulations, the lamp is ready, just put it on the Z axis of the printer!