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As you may can I see on the picture. I try to display the word "goodbye". Yet the problem is that the cursor positions are to bright. I hooked up a 10k ohm potmeter to the Anode. To change the backlight. Is there a way to make the cursos positions less visible?

Kind Regards,


  • 1
    Adjust the contrast pot that you should have wired in?
    – Majenko
    Jul 11 '17 at 20:22
  • as the brightness of the blue backlight changes so do the cursos positions. In the end the cursor positions are equally as bright as the backlight Jul 11 '17 at 20:46
  • Which pot are you adjusting?
    – Majenko
    Jul 11 '17 at 20:46
  • connected to the Anode (pin 15) Jul 11 '17 at 20:51
  • 3
    Well, there's your problem then. If you created the circuit properly you'd be able to adjust the contrast. As it is you have no control. Every tutorial I have ever seen has specified a pot for the contrast. They don't do that just for fun - they do it for a reason.
    – Majenko
    Jul 11 '17 at 20:54

issue fixed: I adjusted the Anode (pin15) instead of the contrast (pin3).

Look at the conversation between me and Majenko to see the realisation.

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