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EEVblog #1045 - How To Drive an LCD

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EEVblog:
How to drive a static LCD display with digital logic and an Arduino / microcontroller.

Code: https://github.com/EEVblog/Arduino-Seven-Segment-LCD

Mighty Burger:
Lots of useful information! Brilliant use of the XOR gate!!

NiHaoMike:
I once took a junk LCD and left it connected to a 9V battery for months on end to see what effect it will have. To my surprise, the most I got was a temporary ghosting effect. Did I just get really lucky?

Z80:
DC can cause ion breakdown and migration of contaminants over time, it's a common problem and not unique to LCDs.
More info here: https://books.google.co.uk/books?id=n_epgHWbpwkC&pg=PA35

giosif:
Interesting (and lucky for me) synchronization with these videos, Dave! :-+
I've just got a bit of a fight with a broken PM6303 LCR meter which is currently having problems with what it shows on the LCD (you can check it in the Repair section, if you so feel inclined).
Watching your videos, I was able to understand more than I would have otherwise.
However, this particular LCD is a multiplexed one, and I am struggling to understand how it would normally work and what is wrong with it now.
So, I'm looking forward to your upcoming video on multiplexed LCD's (you hinted that may come in the near future).
Maybe I could run some experiments or do some captures for your video, if that helps (please let me know).

Thanks!

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