OpenLx USB DMX interface

Posted on Feb 6, 2014

This is yet another circuit for producing DMX output for entertainment lighting from a PC. Designed with flexibility in mind, a range of circuit configurations are possible. Opting for no isolation requires just a PIC microcontroller and a standard RS-485 driver, with an approximate total cost of less than £10, while for a few pounds more, fu

OpenLx USB DMX interface
Click here to download the full size of the above Circuit.

ll galvanic isolation can be implemented to provide protection for the PC, or a keypad added to allow for standalone operation. With the addition of I2C memory, scenes and test sequences can be programmed with a PC and stored for playback later.

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