LCD_SPI_ST7565_NHD_C12864 too low contrast???

[jamsjamsen]

I tried to use the display LCD_SPI_ST7565_NHD_C12864, and the contrast is too weak. I think the value the contrast is initialized at is around "100" or below, because the display appears blank at those levels. I was run ContrastTest.ino [u8g2] and the display was easily readable at contrast levels between 110-190, and best between 130-160. (my personal choice 135).

maybe adding a new command to serial or telnet interface would help??? e.g. sys.lcdcontrast("x")

This is a problem known in the library: u8g2

• ST7565 NHD C12864 (issue 186) olikraus commented on 13 Feb 2017 •

ToDo:

• Put u8x8.setContrast(150) into init code

[karawin]

Ok i will do it soon.

[Va1entin0s]

Excuse me, contrast settings are available now? like this: "u8g2.setContrast (140);" Hardware configuration partition? Telnet? Web interface? I need Contrast = 140 for ST7565 NHD or Contrast = 5 for ST7565 ERC

[karawin]

sys.lcdblv : Display current backlight percent value. sys.lcdblv("x") : Set the backlight percent value (if the hardware provide it) (range 1 to 100)

[karawin]

No contrast , sorry.