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From: Jan K. <ja...@ph...> - 2004-01-27 15:38:53
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Hi all! i have an LCD with the M50530 controller. The display has 2 char-lines (2= 0=20 chars each) and one line with special signs. my problem now is, that i ca= nnot=20 use the wiring shown at the Displays-page, because the connector of my=20 display has only 14 pins, not 16! the question now is how to translate th= at=20 to get my display working?! anyone got an idea how to do this? i have goo= gled=20 a lot but didnt find anything useable, the datasheet of the M50530 doenst= =20 help either.=20 so far i only get the init-screen of the LCD, which means when i power it= up,=20 it shows one line dark (all pixels), one line light (no pixels) and the h= alf=20 of the special characters. thats all, when i start up lcd4linux nothing=20 happens, no wonder to the wiring i cant use... anyone got any ideas how to fix that? i'd be glad! thx, janK |
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From: <di...@ti...> - 2004-03-14 12:34:26
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It works with LCDHYPE on Windows ! And it works fine ! Marco |
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From: Michael R. <re...@eu...> - 2004-03-14 12:55:35
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Hi Marco, > It works with LCDHYPE on Windows ! > And it works fine ! Fine. But I'm afraid this will be not of much help for Benjamin. If it works with windows, this means that neither the display nor the parallel port have a problem, and that there is a working wiring scheme. But this is valid for _your_ computer, _your_ wiring, and _your_ display. Benjamin may have another display, another PC and another wiring. Benjamin, do you have a possibility to try LCDHYPE? (whatever this is...) bye, Michael -- Michael Reinelt Tel: +43 676 3079941 Geisslergasse 4 Fax: +43 316 692343 A-8045 Graz, Austria e-mail: re...@eu... |
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From: Michael R. <re...@eu...> - 2004-01-31 16:33:27
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Hi Jan, > i have an LCD with the M50530 controller. The display has 2 char-lines (20 > chars each) and one line with special signs. my problem now is, that i cannot > use the wiring shown at the Displays-page, because the connector of my > display has only 14 pins, not 16! the question now is how to translate that > to get my display working?! anyone got an idea how to do this? i have googled > a lot but didnt find anything useable, the datasheet of the M50530 doenst > help either. Strange. Very strange. At least these signals are necessary: DB0-DB7 I/OC1 I/OC2 EX R/W GND VCC Vref which gives 15 pins. I could imagine that "shield" is not necessary (as its normally hardwired to GND). Are you really shure it's a M50530? Are there other chips on your display? Maybe it's another microcontroller which has aonther interface with 14 pins, and controls the M50530 itself. As a last resourt, you'd have to follow the signals on the print, and find out where the 14 pins end at the M50530. I know this is difficult (I've done this several times), but it's possible. bye, Michael -- Michael Reinelt Tel: +43 676 3079941 Geisslergasse 4 Fax: +43 316 692343 A-8045 Graz, Austria e-mail: re...@eu... |
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From: Jan K. <ja...@ph...> - 2004-01-30 15:52:32
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Hi Michael! Am Freitag, 30. Januar 2004 06:53 schrieben Sie: > Hi Jan, > > > i have an LCD with the M50530 controller. The display has 2 char-line= s > > (20 chars each) and one line with special signs. my problem now is, t= hat > > i cannot use the wiring shown at the Displays-page, because the conne= ctor > > of my display has only 14 pins, not 16! the question now is how to > > translate that to get my display working?! anyone got an idea how to = do > > this? i have googled a lot but didnt find anything useable, the datas= heet > > of the M50530 doenst help either. > > Strange. Very strange. AGREED !! Strange display, looks to me as its out of a stereo or somethin= g=20 like that :) Damn manufacturers and thier connections... > > At least these signals are necessary: > DB0-DB7 > I/OC1 > I/OC2 > EX > R/W > GND > VCC > Vref > > which gives 15 pins. I could imagine that "shield" is not necessary (as > its normally hardwired to GND). i am certain it only has 14 pins!=20 > > Are you really shure it's a M50530? Are there other chips on your > display? Maybe it's another microcontroller which has aonther interface > with 14 pins, and controls the M50530 itself. i checked the chips, here they are:=20 1st in row is the M50530-001FP 2nd: M50524FP 3rd: M50521FP > > As a last resourt, you'd have to follow the signals on the print, and > find out where the 14 pins end at the M50530. I know this is difficult > (I've done this several times), but it's possible. ok, i have had a look at this, but i'd say it not possible with this kind= of=20 display, besause many wires are under the LCD (not the side where the chi= ps=20 are on) and then they come back to the chipside. I dont think i could rem= ove=20 the LCD without damaging/destroying it?! Its clamped onto the plate like = all=20 the displays that i have seen are :( I could unclamp it but i fear destro= ying=20 it as i said... But as time goes by seeing this LCD not working i get clo= ser=20 to this option :) > > bye, Michael thanx so far, janK |
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From: Michael R. <re...@eu...> - 2004-01-30 21:10:20
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Hi Jan, > i checked the chips, here they are: > 1st in row is the M50530-001FP > 2nd: M50524FP > 3rd: M50521FP The same chips as on my display. I'm not shure, but I think these are row and/or column drivers. but nu microprocessor there. How much beer did you have when counting pins? > ok, i have had a look at this, but i'd say it not possible with this kind of > display, besause many wires are under the LCD (not the side where the chips > are on) and then they come back to the chipside. I dont think i could remove > the LCD without damaging/destroying it?! Its clamped onto the plate like all > the displays that i have seen are :( I could unclamp it but i fear destroying > it as i said... But as time goes by seeing this LCD not working i get closer > to this option :) Well, as long as it's not a multilayer print with more than two layers, this should be possible. There should be no problem removing the display itself. There is this metal frame which is normallly clamped on the print by 4 or six "Blechlaschen" (sorry, my english doesn't reach that level). The electronic connection between the display glass and the print is made with "leitfähiger Gummi". The only issue when re-assembling is to find the correct position again. I've done this several time, too. I didn't destry anything. bye, Michael -- Michael Reinelt Tel: +43 676 3079941 Geisslergasse 4 Fax: +43 316 692343 A-8045 Graz, Austria e-mail: re...@eu... |
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