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Topic: (128x64) Dot Matrix GRAPHIC LCD (Need advice) (Read 9 times) previous topic - next topic

Staedtler

Hi usual suspects!

I am ready to complicate more my series of projects.
I've started with an 16x2 LCD, jumped to a 20x4... and looks like is not enough.

So far, (for this particular project) my code is 18,000 bytes long (leaving 12,500 byte free out of my 328p).

The question is how heavy is the library for this (128x64), and how much more I expect to load to my code?

Should I quit developing for the 328 if I take this path and just go straight to a Mega?

[ rant ]
PS: (Off topic) I feel sad that I we can't comment on the old forum. I don't understand why it's so complicated the migration of DB's to a new format
... never mind.
[ / rant ]

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Eight bytes walk into a bar. The bartender asks, 'Can I get you anything?'
- 'Yeah', reply the bytes

liudr

The ks0108 GLCD example code compiles to 8.2K. You need around 13-16 pins so mega is much better.

http://www.arduino.cc/playground/Code/GLCDks0108

I got myself one display but only got as far as seeing the demo. I don't have a mega and don't like that many jumper wires, messy.

If you're interested, the library seems to provide many features to simplify programming.

Staedtler

#2
Jan 29, 2011, 09:08 am Last Edit: Jan 29, 2011, 09:15 am by Staedtler Reason: 1

... don't like that many jumper wires, messy.


I hear ya!

I hate that too... so I found a solution with the LCD-Keypad Shield...
All I did was removed the 16x2 LCD, removed the male pins and replaced with female pins...




... now I can plug my 20x4 LCD



... and probably ...(I have to take a look at the 128x64 datasheet)... too (?)..without modifications.




Anyhow, I might be safe Size-wise.
I am looking forward to that 128x64 then.



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Eight bytes walk into a bar. The bartender asks, 'Can I get you anything?'
- 'Yeah', reply the bytes

mowcius

Quote
... and probably ...(I have to take a look at the 128x64 datasheet)... too (?)..without modifications.

Highly unlikely, the 128x84 KS0108 displays cannot normally be directly driven as you have to connect up the negative voltage supply to the contrast pot among other things. So you will need a breadboard or a shield specifically designed for it.

Mowcius

Staedtler


Quote
... and probably ...(I have to take a look at the 128x64 datasheet)... too (?)..without modifications.

Highly unlikely, the 128x84 KS0108 displays cannot normally be directly driven as you have to connect up the negative voltage supply to the contrast pot among other things. So you will need a breadboard or a shield specifically designed for it.

Mowcius


Exactly, that's why I am using the LCD-Keypad shield. The only difference is that the (128x64) needs  extra 4 pins that can be re-routed on the shield.
Not a biggie.
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Eight bytes walk into a bar. The bartender asks, 'Can I get you anything?'
- 'Yeah', reply the bytes

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