LED Light for PrintrBot
by rppjim, published
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There must have been a change to the extruder design or something, but the holes on this do not match the Printrbot Plus (v2). The screws that this is supposed to mount on are much further apart, and lower. The good news is that there's still more than enough free space behind the extruder to mount it with small wood screws.
This project is pretty easy for anyone with experience soldering and wiring. The LEDs are being powered off one of the available connectors on the PC power supply. One thing I failed to list was the power cable I used (I cut off the black connector and slpliced in some 2-cond. cable I had): http://www.radioshack.com/prod...
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(2) 5mm High-Brightness White LED (2-Pack), radioshack.com/product/index.jsp?productId=3060980
(1) Deans Micro Connector, rpphobby.com/product_p/wsd1222.htm
(1) 220 ohm 1/4W Resistor, radioshack.com/product/index.jsp?productId=2062340
(1) Power connector, i.e., Molex Power Cable (cut off the black connector), radioshack.com/product/index.jsp?productId=3780246
The LED Holder will fit snugly between the hex nuts on the PrintrBot LC and uses the existing #6-32 screws. Remove the two lower screws and washers, put the holder in the place of the washers and reinstall the two screws.
I used a Micro Deans connector as a disconnect at the print head.
The resistor value assumes connection to +12V and the specs of the RadioShack white LEDS (FW current: 25mA, FW supply: 3.3V). If you are using a different LED or power source, go here for a simple resistor calculator: led.linear1.org/led.wiz
I used a PC power connector to get the 12V to power the LEDs from one of the available connectors on the PC power supply.
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