I have an NHD‐0420H1Z‐FL‐GBW‐3V3 that I am having trouble getting working.
I have re-created the sample code for the "Example Initialization Program", and confirmed that I am sending 3.3 volt signals along all the appropriate pins. However, I seem to be unable to send any characters to the display - All I see are blocked out first and third lines.
I'm not sure where to go from here in terms of debugging. The only thing I've noticed is that in the sample code there is: "command 0x30 = Wake up". I can't find this command in the manual for the LCD driver, so I don't know exactly what it does.
Please sign in to leave a comment.