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Q & A
1. Adjusting the contrast of a character LCD module.
There are two means of adjusting the contrast: Please refer to the following drawing:
1. Internal: J2 short, add the appropriate resister to R7 for contrast control.
2. External: J1 short, R7=0, By adding a VR the contrast can be controlled externally.
Please note the following diagram:
2. Connecting and powering the backlight.
There are two means of connecting and powering the backlight. Please refer to the below
diagrams:
http://www.powertipusa.com/qa.htm
11/10/2004
POWERTIP [ POWERTIP TECHNOLOGY ]
