I have hooked my LCD up to my Arduino using the guide on: http://arduino.cc/en/Tutorial/LiquidCrystal but my backlight doesn't work. I have a 20x4 lcd 5v 8ma. [image] here is my interface list: -1 GND -2 + 5v -3 1k resistor to GND -4 pin 12 -5 pin 11 -6 pin 10 -7 pin 9 -8 pin 8 -9 pin 7 …

lcd 20x4 problem

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