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Author Topic: Arduino + LMB0820 LCD  (Read 1383 times)
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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?
« Last Edit: July 16, 2009, 12:34:49 pm by Stigern » Logged

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In the demo, the code they use is:
Code:
//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.
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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?

« Last Edit: July 16, 2009, 05:09:05 pm by Stigern » Logged

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No, definately not. Try emailing Seeed
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Where to buy a LMB0820 in europe ?
thanks
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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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