Today I made a prototype of my design for an opto-isolating booster for the DMX protocol. And well it worked so I’ll continue with designing a shell type booster. It uses a 6n137 opto-isolation chit and a 75176 RS485 bus driver chip.
Here’s what it looks like on the bread board.
opto isolation prototype
So recently i was testing some old Clay Paky Pin Scans with a friend and i reached for a simple 6 channel DMX controller we had in the workshop – only to find that it was broken :(. So i thought to myself how hard can it be to make one? After all it’s simply some faders (potentiometers) some A/D and a chip to read the values and convert them to DMX code and transmit them. SIMPLE.
Well actually yes it is. Arduino offeres an open source platform for doing this and best of all – the hard work has already be done. http://www.arduino.cc/playground/Learning/DMX shows work that others have done and DMXSimple is an install-able library that makes the sending of DMX well, simple! Continue reading