Currently I am working with SparkFun serial LCD, linked below
I am connecting it to Arduino UNO.
The LCD power is connected to Arduino 3.3 volts
the LCD RX pin is connected to pin 2 in Arduino through a 1k and 2.2k voltage divider. The input voltage is taken from the 2.2k
It’s displaying the text correctly, but it’s very very dim and it’s not clear at all, please check attached.
I am using Arduino code linked below with Arduino version 1.6.4
It’s mentioned in the data sheet, that a 10kohms potentiometer can be used to adjust the contrast of the LCD, but I am not sure where is it located at the back of the LCD ?
Any help is appreciated.