Display for MIDIbox64E

[itchyhead]

Hi, and a big thank you for all that made this project happen!!!

I am building an MB64E.

1.. What advantages will an GLCD bring? Do I understand correctly that an LCD will only support letters/numbers to be displayed?

2...my choices are:

LCD: HD44780 based 16x4characters MC1604B-SYL ( info: http://www.everbouquet.com.tw/MC1604B.htm ) @10euros

GLCD:  KS0108 based 128x64pixels MG12864-SYL/H (info: http://www.gme.cz/linkydok/68a8fd68ac9a154d3361404c03354384.pdf ) @20euros

Will I be needing MAX759 DC converter for anyone of these?

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Grin

Thanks, Petr Ocka

[pay_c]

I don't know about the converter, as I'm not able to look at the .pdf in your second link (chinese stuff?) and there's nothing stated about that within the first link. Normally you don't need it. Most LCD's work with positive voltage.  Only real cheap LCDs sometimes do not.

A graphic LCD is just capable of bringing you more information than a caharacter LCD (CLCD). It has more dots. Not much more about it. You can draw there like you want to. But the programming of a GLCD is normally MUCH more time-intensive than a CLCD (because you have to draw your graphics pixel-wise and you can do much more stuff).

A CLCD is also capable of bringing up some basic graphics (e.g. the different bars or arrows which you can find on ucapps.de). But that's more like very very basic and no real graphic. It's called character LCD because it's thought for that.

For most apps a CLCD is more than fine. Only bigger apps (like the MBLC) really should be used with a GLCD. But in the end it's dependent to the needs of the user. My advice: Look at Ucapps.de for different apps (e.g. MBLC) and look at the different LCDs used there. As you will see also in the gallery most people stick to the CLCDs (and that's not only because of the cheapness of those LCDs).

Greetz!

[moebius]

...Most LCD's work with positive voltage.  Only real cheap LCDs sometimes do not.

Or extended temperature range versions..?!

Moebius

[pay_c]

???

Eeeeeeerrrrr.... no idea... to be exact, *never* thought of that...

[itchyhead]

Thanks for the reply.

It is not enough for me to have only the clcd. i will have some ribbon controllers  (anyone managed to get these in europe? they seem to be only for wholesale. siemens use them in fact.: http://www.spectrasymbol.com/linearposition.html ) and external sensors and would like the display to show some data when i press them, etc. i am not a programmer, however i guess there is code to inspire from , or at least it seems that the commands are universal.

having ruled out the clcd, here is another link for the ATM12864D glcd with KS0108 chip.: http://www.hebeiltd.com.cn/lcm.datasheet/ATM12864D.pdf

from the pdf:

PARAMETER SYMBOL RATING UNIT NOTE

Operating voltage VDD -0.3 ~ +7.0 V *1

Supply voltage VEE VDD-19.0 ~ VDD+0.3 V *4

VB -0.3 ~ VDD+0.3 V *1,2 Driver supply voltage

VLCD VEE-0.3 ~ VDD+0.3 V *3,4

so its negative suply voltage. however, all pdfs for this diplay are somehow corrupted. is there any other info (for programming) i will need apart from the coonections to the ks0108, which i can obtain from somewhere else?