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Re: Interesting findings on the internet
Posted: Mon Jul 21, 2025 5:39 pm
by BU508A
Not sure, if this is good (haven't watched it yet) but Marco Reps approves:
The complete YT channel:
https://www.youtube.com/@ericksonengineering7011/videos
Re: Interesting findings on the internet
Posted: Mon Jul 21, 2025 5:57 pm
by tggzzz
Re: Interesting findings on the internet
Posted: Wed Jul 23, 2025 3:07 am
by Cubdriver
After seeing this and also stumbling on a Zenwizard video on replacing the piss poor display in the HP 8904A Synthesizer this past weekend, I ordered a pair of replacement 40 x 2 LCDs to do mine. Need to see them in person to decide if I'm going with white characters on a blue background, or black on greenish-yellow. Either has got to be better than the barely readable one that's in it now!
-Pat
Re: Interesting findings on the internet
Posted: Wed Jul 23, 2025 8:39 am
by Zenith
The original display may not have been great to begin with and modern ones are better, and it may have degraded with age. However, some of those LCD character displays have a pot to adjust the contrast, and you may only need to tweak that. I was playing with an unused one a few days back and with everything wired correctly and a character string sent to it, it remained dark. Then I remembered the contrast pot and tweaked it, and it came to life.