31 May '14, 8pm

The $50 DMX Tester

Despite being around for about as long as MIDI, DMX, the industry standard for controlling stage lighting and smoke machines, is still an astonishing expensive protocol to work with. Where MIDI can be banged out with a simple microcontroller – with odd bit rate requirements, no less, DMX testers cost hundreds of dollars. Of course this means the market is wide open for a DIY DMX tester, and over on the projects site [Tony] has just the thing . For the hardware, [Tony] is using few 4×4 matrix keypads for user input, and a character LCD for the display. With this, he can set any of the 512 lighting channels in a DMX setup to any one of the 256 intensity values. Setting a range of channels to any intensity is a snap, with an extremely cut down command protocol. All the processing is handled by an Arduino, which seems more than capable of handling the DMX protocol thanks to th...

Full article: http://hackaday.com/2014/05/31/the-50-dmx-tester/

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