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| crazy question regarding small cellphone lcd screen |
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| clickhea:
ok heres a little spin on the question i have the phone motherboard which the lcd screen connects too. when i connect the lcd to the motherboard then connect the motherboard via usb to my computer i get a picture on the lcd of a battery symbol. think there would be anyway to override this and have it display random things? or would i need a specific driver for this. |
| nox771:
--- Quote ---when i connect the lcd to the motherboard then connect the motherboard via usb to my computer i get a picture on the lcd of a battery symbol. --- End quote --- That's just the built-in firmware of the phone displaying the battery charge indicator when it detects power (via USB). I don't think you will get what you want via that route. To interface to a computer via USB you will likely have to build a microcontroller based interface (you may be able to find a dev board somewhere - prob $$$ though). To build a microcontroller interface you would need to first find the datasheet for that display. Something like the PDFs here: http://www.crystalfontz.com/products/128128a/data_sheet/data_sheet.html Then you would need to get familiar with a microcontroller, how to communicate via USB, and how to write the corresponding host-side software. Been down that road, if your new to this kind of thing expect a year or so of learning. There are some forums around that deal with this kind of thing. You can try here: http://forum.lcdinfo.com/ Now that I look at it perhaps that 13700 board they sell will work (that would save a heck of a lot of time): http://www.lcdinfo.com/ You could try posting the LCD model info to that forum and ask if the controller will work. |
| leapinlew:
--- Quote from: nox771 on November 02, 2008, 01:06:21 pm --- --- Quote ---when i connect the lcd to the motherboard then connect the motherboard via usb to my computer i get a picture on the lcd of a battery symbol. --- End quote --- That's just the built-in firmware of the phone displaying the battery charge indicator when it detects power (via USB). I don't think you will get what you want via that route. To interface to a computer via USB you will likely have to build a microcontroller based interface (you may be able to find a dev board somewhere - prob $$$ though). To build a microcontroller interface you would need to first find the datasheet for that display. Something like the PDFs here: http://www.crystalfontz.com/products/128128a/data_sheet/data_sheet.html Then you would need to get familiar with a microcontroller, how to communicate via USB, and how to write the corresponding host-side software. Been down that road, if your new to this kind of thing expect a year or so of learning. There are some forums around that deal with this kind of thing. You can try here: http://forum.lcdinfo.com/ Now that I look at it perhaps that 13700 board they sell will work (that would save a heck of a lot of time): http://www.lcdinfo.com/ You could try posting the LCD model info to that forum and ask if the controller will work. --- End quote --- Thanks for the informative post Nox. I wanted to say something similar to what you said (will cost a lot of money and isn't easy) but didn't feel qualified to say so since I'm not an expert on the matter. I remember walking away from this same type situation with the idea that it was much more complicated than I originally thought it would be. |
| nox771:
--- Quote ---I remember walking away from this same type situation with the idea that it was much more complicated than I originally thought it would be. --- End quote --- You know I'm not certain it's entirely over the head of someone new to it, for some reason when I go about these things I always end up taking the hardest route possible. For me I look at it and I would go the micro route, but look at what this guy did: http://forum.lcdinfo.com/viewtopic.php?t=2490 He took a $20 LCD, a $60 controller, plugged it into myLCD (http://sourceforge.net/projects/mylcd/), and got video working on it. To be certain he had to have a good level of understanding of what he was doing, and he did some custom coding, but it's much easier than the route I would have gone. I've seriously got to learn to make better use of off-the-shelf bits and pieces... |
| clickhea:
well thats pretty cool, but yeah iam just not gonna bother thank you guys ;) |
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