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/diy/ - Do-It-Yourself


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>> No.2045164 [View]
File: 346 KB, 1276x702, drive waveforms.png [View same] [iqdb] [saucenao] [google]

Just reading 658 now, I see what you mean.
>the net AC voltage across a dark pixel should be maximised
>the net AC voltage across a light pixel should be minimised
>the net DC voltage across any pixel should be zero
I assumed they'd not be this complicated to drive, since Applied Science had to do basically the same thing to drive a multiplexed electroluminescent dot-matrix. Guy coulda just hooked an LCD dot-matrix driver to some stepup transistor circuits.

Anyhow, if his common is constantly going up-down-up-down, can't he just connect the segment to a 50/50 voltage divider or to a cap to ground? Or leave open-circuit/with a really high-impedance voltage divider/capacitor, in case the segments are the other way around.

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