A DIY Pixel

There was some decent interest in a completely through-hole design. Some folks wanted to build their own pixels but weren’t comfortable with surface mount components.

This board receives DMX through a pair of RJ45 connectors in parallel. A SN75176 translates the differential data into a single-ended signal that the PIC can process. 5 x 2N3904 transistors drive 5 banks of LEDs.  The intention was to drive red, green, blue, amber and white LEDs.

The LEDs are arrayed as follows:

R G B W A R
G B W A R G
B W A R G B
W A R G B W 
A R G B W A

 

Et Voila…

Grab the PDF copies of the schematic and board layout here:

sixservoschematic-1

sixservoboard

sixservo_3 – Rough but tested and functional .asm code for the DIY pixel

sixservo_3 – compiled .hex file, DMX start address is 7

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