Prusa x-carriage LED carrier

by hugh, published

Prusa x-carriage LED carrier by hugh Oct 14, 2012


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I ordered a heap of white LEDs, and figured that I'd use them for something one of these days. Turns out that there just wasn't enough lighting on the platform of my printer for my liking.

Solidworks and a few prints later it was much better. Lots of glare off the glass over the heated bed, but it's much improved.

I included the Solidworks files for anyone interested, and can export it in any other format on request.



  1. Buy the LEDs (or some like them)
  2. Buy the current-limiting resistors (in this case, 15 Ohm with me running off a 3.3v supply)
  3. print and wire up.

To connect up:

  1. Put all the LEDs in each holder, leads vertical, all the same length leads in line with each other.
  2. Bend to where they are connected to one another, separated by side (anode or cathode).
  3. Solder together down the line.
  4. Cut short so as to not interfere with the smooth rods and solder wires to LED leads (2). Add heat-shrink tubing if you have it.
  5. Zip tie through both slots and that should keep it fixed in place.

If you have a digital multimeter, you can set it on the LED mode to know which is anode (+3.3v,+5v, etc.) and which is cathode (GND). If you touch both leads and the LED doesn't light up, it's the other way. :)

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