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jjhall · 04-17-2009, 01:50 PM

If I understand the wiring diagram/schematic properly, the transistor is being used to allow pin 9 on the Arduino to turn the backlight on and off on the LCD. Am I correct in that assumption? If so, it should be OK to leave the transistor off of the circuit for now (I don't have one handy) and it should work fine with the exception of having a backlight? If I want a backlight for now I could take +5V and tie it directly (through a manual switch) to LCD pin 15, right?

Thanks for the assistance!

Jeremy

04-17-2009, 01:50 PM	#1 (permalink)
jjhall EcoModding Lurker Join Date: Apr 2009 Location: Idaho Posts: 3 Thanks: 0 Thanked 0 Times in 0 Posts	Leave out transistor for testing? If I understand the wiring diagram/schematic properly, the transistor is being used to allow pin 9 on the Arduino to turn the backlight on and off on the LCD. Am I correct in that assumption? If so, it should be OK to leave the transistor off of the circuit for now (I don't have one handy) and it should work fine with the exception of having a backlight? If I want a backlight for now I could take +5V and tie it directly (through a manual switch) to LCD pin 15, right? Thanks for the assistance! Jeremy