Does SamplerBox work with 20 X 4 LCD screens?

Hi,

This gets interesting as this could be the first confirmation of 4 working lines.
So @guest: can you please confirm its indeed 4 lines and whether you had to do something extra. Many thanks !

I've introduced this coding in may 2020 with a note in the changes.txt:

Code:

  - Added I2C-LCD (HD44780, 2x16 and 4x20).
    Support is theoretical as I can't test this, please feedback results.

Several users have struggled to get it working with 2 lines, in most cases solved with checking wires or the backlight screw (please search the forum for the applicable threads if you want to see all details).

There's only one feedback regarding 4 lines: s1100 (unregistered user) reporting "not working for4 lines, only 2", with a typical detail:

Config info:
"USE_I2C_LCD = True" --> displays 16x2
"USE_I2C_LCD = 20x4" --> no output
"USE_I2C_LCD = 16x2" --> no output

("USE_HD44780_16x2_LCD = False" in all cases)

At that time I was absent, but looking at it now, the "16x2 no output" intrigues me as this suggests a coding error, however I cannot reproduce this. Lacking this hardware I can only perform "dry" tests.

@RaspberryP99: Do you have the same?
If so: would you be so kind to register as forum user, so that I can can send you some test/debug material via private messages that would help in finding a fix.

Regards, Hans