Newhaven Display Issues


1 comment

  • Alee_S
    Hi sherloc987!

    A pot is a variable resistor that can be adjusted anywhere from 0 ohms to the maximum resistance it is rated to handle. So when the datasheet recommends a 10k~20k pot, it means any pot that has a maximum resistance within a 10k~20k range. 

    However, the technique you used of connecting a series of resistors together can also yield proper contrast on the display, pending that you attain a recommended rated voltage of 0.5V across Vo (Pin 3), as shown by the electrical characteristics table on pg. 4 of the Datasheet.

    Since you were using resistor values of 10k and above, chances are your contrast voltage on Pin 3 was too high. I would recommend you try to decrement your value of resistors connected to ground (9k, 8k, 7k, etc.) until Vo approaches 0.5 V, and if everything else is working correctly, you should start to see text appear on the display.

    Hope this helps!

    Please let me know if you need any further assistance!

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