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How i can get an negative picture on LCR-T4 #8

Open porlock opened 1 year ago

porlock commented 1 year ago

I switch a screen on my LCR-T4 to blue backlight one, but black letters on blue background are almost invisible :( is there a way how i can make a display in negative ? IMG_20221208_115605603

kubi48 commented 1 year ago

Hello Tomasz,

 

There is no way supported by the "k" software version, that the pixels

 of  the display can be shown inverted.

Probably you can try to find a better contrast value in the menu (Contrast).

But you should know, that the contrast value is decreased by a short key press

and increased by a longer (>0.5 s) key press. A very long key press will save the value.

If the contrast value is changed to a wrong value, the content of the display is unvisible!

Sometimes the content is visible with a look from the side to the display.

Otherwise you can try to press the key many times with short presses to get a visible

value. If a wrong value is saved by the very long key press, there is no way to read the

menu again. You must reprogram the ATmega to reset the contrast value to the default value.

 

You can also change the start value in the Makefile (CFLAGS += -DVOLUME_VALUE=48)

and recompile the software.

 

Best regards,

Karl-Heinz

 

 

Gesendet: Donnerstag, 08. Dezember 2022 um 18:21 Uhr Von: "Tomasz Zieliński" @.> An: "Mikrocontroller-net/transistortester" @.> Cc: "Subscribed" @.***> Betreff: [Mikrocontroller-net/transistortester] How i can get an negative picture on LCR-T4 (Issue #8)

 

I switch a screen on my LCR-T4 to blue backlight one, but black letters on blue background are almost invisible :( is there a way how i can make a display in negative ?

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