Backlight on LCD

[Bryce Renninger]

Hello all,

I am trying to activate the back light on my 16x2 LCD by adafruit. I finally was able to get text to add to the screen, but the backlight will not turn on. 

Does anyone have a solution to this? For right now all I am using is the WiringPiLcdExample in the examples folder.

Any help would be very great full!!

Thanks

Bryce

[Jim Beagleymn]

Hi Bryce.

What did you have to do to get the WiringPiLcdExample to talk to the Adafruit i2c display?  Mine is totally unresponsive :-(
Cheers,

Jim

[Andrew Chandler]

Usually on those 16x2 lcd boards there is a jumper you jump to turn on the backlight.   Otherwise if you don't use that you have to run 1 of the pins from that jumper to a  IO pin that you use to toggle it on / off

[Frank Delporte]

I've used an LCD 16*2rows 1602A-module for my book https://leanpub.com/gettingstartedwithjavaontheraspberrypi/

In that case you need to use two additional connections with pot-meter to control both character and backlight brightness.

See also https://github.com/FDelporte/JavaOnRaspberryPi/tree/master/Chapter_09_Pi4J/java-pi4j-lcddisplay