Electronics > Projects, Designs, and Technical Stuff

LCD design, is this good enough?

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coromonadalix:
Man  Impressive work :)  :-+

Has others wrote,  some  HP Agilent stuff could / can be saved with guidance like this.

Keatah:
This is really really great news! I have 11 PC-1 units between myself and friends that could use such a replacement! And I wouldn't mind paying about $25 - $30 per display (if that's a fair cost and allows for some personal profit)..

I was almost almost getting ready to cannibalize other units to make 1 working. But now with this project that may not be necessary.

Can you please update us on how this is coming along and if and when some will be available?

---

I got to thinking and wondering if it's possible to specify a more yellow-tinted color instead of the grey/green shown in the videos? For authenticity.. Or might it be as simple as retaining the yellow filter already present?

I also believe there are more than just a couple hundred of these pocket computers out there. I see one or two move for between $30 and $100 per month.

But there's a lot of delicate work involved in the repair. And watching your second video is going to be required. If any obstacle to selling these replacement displays exists it is that and likely not the amount of units out there. And the ones that are still working are likely to fail sooner or later.

robertbaruch:
I've ordered the run of 200 from the manufacturer, and that should hopefully arrive by the end of May. At that point I'll put up a shop on Tindie and start selling them. I did apply to get CrowdSupply to make this a crowd-sourcing project rather than just a store, but CrowdSupply really dropped the ball on this one.

It's not likely that I'll meet my goal of 2.5x the cost. I probably can't put two of the same thing on Tindie, one for, say, $20, and the other for $40 ($20 for the LCD plus $20 support).

I've found that there are some of the PC-1/PC-1211 that can't be fixed by just replacing the LCD -- there's something more fundamental going on, so an LCD swap isn't a guaranteed fix for *everything* :)

trompczynski:
Just came across this when searching alternatives for my PC-1211 once again. I had my head on using a standard N-character LCD and perhaps some low-power LEDs for the other indicators, but man! This is just what I've been dreaming of. I'll probably get a couple of screens when they're out.

We could organize ourselves into a pocket computer enthusiasts group after they're all working, what do you guys think? I've been dying to make this little machine communicate to the outside world through the old cassette interface. Perhaps figure out some sort of really basic modem program using the load and save commands, and audio in/out on the other side of the cable.

Greetings from Brazil, where the PC-1211 was built in rather large numbers. Can't wait to fix mine!

rkindig:
I'm very curious: how is this project coming?  Almost ALL Tandy PC-1's have the LCD issue.

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