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Problem using Nokia 6100 Sparkfun breakout board (blue stripes)

Topic last updated 31 Oct 2010, by Daniel Schmidt. 2 replies
Daniel Schmidt
31 Oct 2010

Hi,

I've got problems using my Sparkfun Nokia 6100 LCD breakout board (red pcb with 12 pins) with my LPC1768. I tried the hello world example in the cookbook (http://mbed.org/cookbook/Nokia-LCD), but I only got some blue stripes (see picture). I also tried the Nokia_Epson code, but I got the same results. I've connected the 3.3V input from the breakout board to a DigitalOut pin and the voltage drops to about 2.9V, but I don't know if that is the problem, because I can't try an external power supply right now. The backlight is powered by a stable 5V.

Thanks

Daniel Schmidt

 

sparkfun lcd

Leon Heller
31 Oct 2010

The mbed has a 3.3V output you can use.

Daniel Schmidt
31 Oct 2010

Thank you, didn't think about that one. The problem really was the low voltage.