NHD-0216MW-SB3 Font width question

Geof Potter

• January 14, 2018 01:31

We are using an NHD-0216MW-SB3 in a control system for VLF receivers.

I have an apparently working prototype of the control board with all necessary functions of the OLED display operating.
However, the font width comes up as 3 dots instead of 5 (or 6) making the characters unreadable.

DDRAM addresses map onto the display in a repeating manner, i.e. address 0x00, 0x01, etc appear in two locations on the panel.
Since I have multiple modules behaving exactly the same way, I'm assuming the problem is my programming....not the displays.

Any suggestions about the cause of the font width issue, in particular will be appreciated.

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  Saurabh_B

  • January 15, 2018 14:22

  What you're describing could be caused by how the segments are mapped.
  
  Example Code:
  https://newhavendisplay.com/appnotes/excode/txt/OLED/slim_OLED.txt
  
  The initialization function, we have the command that sets the SEG Pins Hardware configuration in the middle.
  Can you possibly try using 0x00 or 0x10 for the 2nd portion. This remaps the segments so that the full character appears on the same character area.

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  Geof Potter

  • January 16, 2018 13:32

  YES !!!  Your suggestion did indeed solve my problem.
  Thanks for the help and for the link. I had not seen that version of initialization routine.
  
  Geof

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