Arduino + LMB0820 LCD

I just can't get this working.

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?

In the demo, the code they use is:

//8 bit: RS, RW, EN, D0, D1, D2, D3, D4, D5, D6, D7

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.

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?

No, definately not. Try emailing Seeed

Where to buy a LMB0820 in europe ? thanks


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!