?

Log in

Found pinout of 128x64 Goldmine Electronics' 50-cent graphic LCD - Software & Hardware Design! [entries|archive|friends|userinfo]
gadget_design

[ userinfo | livejournal userinfo ]
[ archive | journal archive ]

Found pinout of 128x64 Goldmine Electronics' 50-cent graphic LCD [Mar. 25th, 2007|05:12 pm]
gadget_design

gadget_design

[minus3db]
Ya, I was bored yesterday, so I took stuff apart. Here is some more on my cry for help unusual fascination with small display devices - a teardown of a cheap, undocumented LCD to figure out how to make it work, and document it for everyone else out there on teh internets who wants to use this display in some project. If nothing else, it features some pretty pictures of a colorful semiconductor die under glass, taken with Kick @ss Camera macro focus.

(Posted to: gadget_design, firmware_3l337)
linkReply

Comments:
From: hattifattener
2007-03-26 06:33 am (UTC)
Interesting. I have a baggie of old undocumented surplus-bin LCDs without controllers (probably about 60k-100k pixels apiece?) but with flex connectors, which I keep meaning to try to reverse-engineer. The ITO circuitry shows up moderately well if you scan them with a flatbed scanner.

I'm not sure what I'll do with them if I get them working. Maybe a programmable Magic 8-Ball; they're about the right size.
(Reply) (Thread)
[User Picture]From: minus3db
2007-03-27 05:42 am (UTC)
Here's a fun one a buddy of mine came up with using an OLED display. A wristwatch that plays Pong.
(Reply) (Parent) (Thread)
[User Picture]From: _duncan
2007-03-27 04:52 am (UTC)

LCD graphics array

Hey, Cool! Thanks for taking the time to work through the reverse engineering and to document the process and the results.

Now go and make some money off that work. You can sell those 50 cent displays for about $20 with a slighly worked-up version of the info you picked off the glass with the macro lens.

Extreme macro came to my toolbox entirely by mistake. It turns out a $7 webcam focuses at about half an inch when the lens is nearly fully extended.
(Reply) (Thread)
[User Picture]From: minus3db
2007-03-27 05:51 am (UTC)

Re: LCD graphics array

Hehe, I discovered that by accident too. During a long-ago hacking project, I found the original "single-use digital camera" had a lens that could be unscrewed to focus to less than 1". Actually taking the picture was a bitch though, since there was no live preview.

As for selling the LCDs, this could actually be workable (at least for whoever's willing to jump first) - a small breakout board with the caps onboard and a SANE connector (100 mil pin header?). With all the power supply stuff taken care of it's down to 7 wires including power and ground.
(Reply) (Parent) (Thread)