LCDs on eBay

[cimo]

hallo

still looking for a LCD and i ve found this one on eBay, ain t that cool blue/white stuff but it s very cheap,, since i am not an expert about  LCDs maybe somebody can give his/her advice/comment:

http://cgi.ebay.com/HIGH-RESOLUTION-128-X-64-GRAPHIC-LCD_W0QQitemZ220118062470QQihZ012QQcategoryZ26206QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

from the manufacter : http://www.jeanlcd.co.kr/product/product_list.html?cateid=12

[TK.]

Hi,

this is a low-performance T6963C based display - for what kind of MIDIbox are you planning to use it?

Best Regards, Thorsten.

[cimo]

hi

infact i ve already contacted the seller cause it says it has a kso108  driver while in the manufacter s web site it s stated differently.. so i will wait for an answer.

But what does it mean low-performance?

i plan to have two of them in a MBLC, i guess i need 2 CORES to drive 2 LCDs but i plan to skip the ledrings stuff and use the GLCD to monitor the encoders status/midi feedback.

It would be 8 encoders per GLCD, but really i need to dig into the LC code and LCD behaviour cause i never used them before, anyway help is welcome.

EDIT: the box will feature

8 analog pot

28 backlit buttons

17 encoders

4 buttons

2 GLCD

2 cores with MBLC AND midi input

in case the driver is NOT a KS0180 will that work anyway or is it not reccomended?

Simone

[TK.]

A T6963C is too slow for a MBLC - it could work, but due to the long access times there is a high chance for MIDI IN buffer overruns which cannot be avoided.

See also the LCD benchmark: http://www.midibox.org/forum/index.php?topic=2169.0

I'm using a KS0108/KS0107 based GLCD, and it still works great! :)

Best Regards, Thorsten.

[cimo]

ok i got it! thanks

still i haven t found the answer to this anywhere:

how much data can i see on the lcd? i mean how many pots can i see on it all together?

and

can i assign names/values to the pots? will LC retrieve names/values from the host?

and

what does it mean 6/9/12 o clock about the viewing angle for the lcd?

and

lcds with the same pixels amount (128X64) may have different size, does that mean that a pot "icon" will be seen as an elipse on some models?

regards

simone

[cimo]

hey there

i am a bit ashamed  :-[ but i need to give it a try again to find an answer to my questions..

the main one right now is this one:

i see there are mainly 2 sizes for 128X64 lcds = View area: 70.7 mm X 38.8 mm or 62 mm X 44.6 mm.Does that mean that pots images won t be shown correctly in one model? in this case which one is to be preferred?

i ve found the answer to the o clock view:

3, 9, 6 or 12 o'clock (right, left, bottom or top view)

[TK.]

I cannot give you an adquate answer

The X/Y ratio of the first one is 1.4, of the second one 1.8

Unfortunately I don't know the exact ratio of my own GLCD, but I would say: yes, on both displays you won't see a 100% perfect circle (like on my own display), but I guess that the impact isn't so high on the second display, as it is close to 2.0 ratio (128/64)

Best Regards, Thorsten.