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Topic: Arduino + LMB0820 LCD (Read 1 time) previous topic - next topic

Stigern

Jul 16, 2009, 07:30 pm Last Edit: Jul 16, 2009, 07:34 pm by Stigern Reason: 1
I just can't get this working.

http://www.seeedstudio.com/depot/lcd-82-characters-blue-back-light-p-120.html

When hooked up as seeedstudio says, it only lights up, and gets very hot...

When looking at example:

//RS-->PC0
//RW-->PC1
//EN-->PC2

PC1,2,3 what are those?

From picture at seeedstudio A0,1,2 analog?
I'm from Norway!

SpikedCola

In the demo, the code they use is:
Code: [Select]
//8 bit: RS, RW, EN, D0, D1, D2, D3, D4, D5, D6, D7
//RS-->PC0
//RW-->PC1
//EN-->PC2

LiquidCrystal lcd(14, 15, 16, 8, 9, 10, 11, 4, 5, 6, 7);

So RS goes to pin 14 (Analog 0), RW goes to pin 15 (Analog 1) etc.

Check out the LiquidCrystal library, you can save a few pins by grounding RW and not hooking it up the Arduino, and using the lcd in 4-bit mode (if it supports it) to free up four more wires.

Stigern

#2
Jul 17, 2009, 12:02 am Last Edit: Jul 17, 2009, 12:09 am by Stigern Reason: 1
Hm, when attaching the Analog pins, 0,1,2. The black-spot on the back gets extremely hot. Something isn't right there.

When I attach more than 2-3 digital pins, the chip at the back gets to 40C and rising slowly, until it reaches such a high temp that I'm cutting off power to it.

I'm guessing it shouldn't do that?

I'm from Norway!

SpikedCola

No, definately not. Try emailing Seeed

wally123

Where to buy a LMB0820 in europe ?
thanks

snapplepop

Stigern,

I am having the same problem that you expressed with the LMB0820, where the black spot on the back is getting extremely hot.  Were you able to fix the problem?  I would appreciate any help that you can give.  Thanks!

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