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--- blog:2019:may:cnc_panel_part_1 [2019/05/28 12:17]
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 This summer, I'm planning on making a control panel that will give me both automatic and manual control of the machine.  I've picked up some used Matsuura optical encoders and an old Micros point-of-sale (POS) touchscreen that I'm hoping to use for the project.  The encoders seem pretty straightforward, but the Micros screen is odd.  It's a proprietary design for use with their POS systems and not intended for general use.  The touch and video data are both transmitted over a single DVI cable.  DVI isn't intended to do this, so how is the touch data being transmitted?  I'm not sure yet.  My current hypothesis is that the display may be operating in single link mode with the touch data being sent over the unused dual link pins.  More sleuthing is needed to figure that out though.  I've already put together a DVI breakout board, so I can start probing the signals coming across the cable.  Wish me the best!
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Adam JonesConsisting of mostly water and curiosity.