Electronics > Projects, Designs, and Technical Stuff
Reverse Engineering an LCD
MotoDan:
Thanks to everyone for their input. I was able to get some of the segments to light up using a 5V square wave across two pins at a time. Still not 100% sure about the segment pinout as the results were slightly ambiguous. I am fairly certain about which pins are the 4 Commons, but the I'm not getting the segments to come on as I had expected. Perhaps the other pins need to be at multiplexed accordingly?
NivagSwerdna:
If you mean 0...5....0....5...0.... then that has a DC bias and is evil.
It should be pretty deterministic especially if you have actual pins... a bit tricky when fighting with a zebra strip and just glass.
Mind you some dude made a video...
*UPDATE*: You didn't mention frequency.... Somewhere between 30Hz and 100Hz is where you should be aiming.
MotoDan:
Well, just about ready to send out some RFQ's. Looking for any recommendations for custom LCD suppliers with favorable results and are willing to work with lower volumes.
mikeselectricstuff:
For reverse-engineering, low-voltage DC would probably be fine.
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