Espruino JavaScript
Spare display for Pixl.js? #3540
Replies: 19 comments
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Posted at 2019-11-02 by @allObjects ...somewhere in the forum @gfwilliams published details about the LDC used on Pixl.js... just could not find it yet... EDIT: here the post: http://forum.espruino.com/comments/14378021/ And pdf attached. Attachments: |
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Posted at 2019-11-02 by @gfwilliams Thanks @allObjects! I'm not 100% sure if that eBay item is the same, but it sure looks pretty close. Lots of people call LCDs 12864, so it's important to get the full model number. I don't have many of the LCDs spare, but if you can't buy one online then I'm sure I could find one for you. I have a lot more of the Pixl multicolour ones which are the same panel but with a slightly different rear, so if you were either happy to do some bodging or do without a backlight then you'd be fine |
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Posted at 2019-11-02 by @allObjects @christianw - when you get a replacement, check for the operating voltage... the ebay uk link I posted shows a 5V model... you need a 3.3 volt model. |
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Posted at 2019-11-03 by ChristianW Thanks @allObjects, @gfwilliams - I just ordered this one here: https://www.ebay.de/itm/322375559510 and see if it fits. |
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Posted at 2019-11-03 by Robin Sun 2019.11.03 Hi gang, hate to be a buzz kill here, but as just the display is cracked, isn't just the LCD and mylar connector all that is needed, such as: |
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Posted at 2019-11-04 by ChristianW @robin thanks. You are right. I already started an inquiry and got the first response. |
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Posted at 2019-11-04 by @gfwilliams Thanks @robin, thanks - that looks like exactly the right part. I think everyone was struggling to find something and had the LCD on it, so the idea was to buy a complete board and unsolder the display. |
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Posted at 2019-11-05 by Robin Mon 2019.11.04
Hey @christianw while that would be a cool upgrade for either of those devices, have an even better idea for a winter project. As the ordered board has pads for wires, what about creating a stereoscopic display as a sister to one of the other Pixl's, such that there is a left eye and right eye separately viewable system that could rapidly flip images between the displays, thereby creating the 3-D stereoscopic view. You would have the world's first Espruino driven 3-D stereo viewer and of course rightful ownership to the corresponding project within the 'Projects' forum area. ;-) Might extend your bicycle computer project for use when the weather won't allow for actual bicycling, simulating (although rather crude) a 3-D terrain! From: > http://www.espruino.com/Pixl.js "The only LED available on Pixl.js is the backlight" Q: So, is the backlight LED integral to the LCD display itself, or a separate part all together?
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Posted at 2019-11-05 by ChristianW @robin yeah 3-D. Right. With 128x64 B/W. ;-) Yes, it seems Backlight is built into the LCD. I could order different colors of Screen and Backlight. Meanwhile I got a quote via above alibaba link: USD 18 postage to Germany, so I ordered 4 pieces for USD 2 each + 1.30 PayPal fee = USD 27,30 (+tax probably) So if anyone needs another spare in Europe, I may forward one or two of my units... |
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Posted at 2019-11-05 by @gfwilliams
Yes, they're the two through-hole tabs on the Pixl board (by the unpopulated JST holes and |
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Posted at 2019-11-06 by Robin Tue 2019.11.05 While my 3D comment was half in jest @christianw I wasn't sure if your response was to the resolution of the display, or the technology actually working that way. Back in the eighties, our company secured a few 2"x3" LCD demos, (remember the resistive Zebra strips @allObjects that bound the glass to the copper circuit board?) around ~$200 USD then and cobbled together a shutter type solution. Yes it wasn't Oculus Rift quality, which was thirty years into the future anyway, but it was cool to see isometric views in 3D. Unable to find the articles we had then as that was pre-Internet, but this is close to how the glasses functioned: |
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Posted at 2019-11-13 by ChristianW The displays from China just arrived. First I unlocked the connector and pulled back the ribbon cable. Unsoldering the backlight pins war no issue, since there wer only two: Cleaning the holes from the backlight connectors with desoldering wick, then putting in the new display, just using the sticky tape on the top, because the lower part is already held by the solder. Voila! - Looks as new. Thanks for the tips and the link. Delivery was quicker than expected and it just went through customs without an issue. See the picture of the box. They even provided the connector terminals for each display...Attachments: |
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Posted at 2019-11-13 by @gfwilliams That's great! Nice of them to stick the connectors in too - that would have been super helpful when I was prototyping it! Now you've got some displays and connectors you could take a look at the Pixl schematics and have a go at making your own custom board :) https://github.com/espruino/EspruinoBoard/tree/master/Pixl.js |
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Posted at 2019-11-13 by ChristianW Hehe :) Maybe if the VMC (velomobile computer) takes off and everyone wants to have one we can do a kickstarter project on this... |
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Posted at 2020-12-14 by ChristianW
Look what I found on eBay. Those fit perfectly for the Pixl display. And by the way: Let's say I can solder them on - can I just flash a Pixl.js image onto a MDBT42Q?Attachments: |
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Posted at 2020-12-14 by @gfwilliams
Maybe, although things like buttons will be in different places. Instead, I'd just use the existing JS driver that's here and you should be fine: http://www.espruino.com/ST7565 |
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Posted at 2020-12-16 by ChristianW Works. Just using the library I mean. Somehow I did not know where to look. I even found the smaller displays I accidentally ordered before the ones used for the Pixl.js and connected them to the Looks cute, don't you think? ;-) Now I have a micro-Pixl.js... Attachments: |
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Posted at 2020-12-16 by @gfwilliams Nice! Those displays draw so little power you can power them from GPIO, so you could actually just get some pin strip and solder the LCD direct to the MDBT42 breakout, making something really compact! |
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Posted at 2020-12-16 by ChristianW Ah yes, @gfwilliams thanks for mentioning. But I feared to run short of GPIO pins in this future project... ;-) |
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Posted at 2019-11-02 by ChristianW
Unfortunately I just broke my display.
Something hard and heavy dropped onto it and the upper half now stays blank.
I guess I cut parts of the ribbon cable...
Any chance to get a spare display or just buy a whole new Pixl.js?
I am glad I bought everything in pairs - so there is a spare Pixl for my current development left..
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