How to turn off the LCD at night?

tjaworski / AceMagic-S1-LED-TFT-Linux

ACEMAGIC S1 Mini TFT/LCD and LED Control for Linux

GNU General Public License v3.0

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How to turn off the LCD at night? #24

Open tggo opened 1 month ago

tggo commented 1 month ago

Is there a way to turn off the LSD backlight so that it doesn't glow at night?

tjaworski commented 1 month ago

not that I found. best you can do is put a blank screen with a black background. but even that is still bright.

shadowpho commented 1 month ago

I wonder if the MCU has a built-in command for turn-off...

tjaworski commented 1 month ago

The Holtek device is powered through the internal USB connection, which requires the USB port to be powered off for the device to fully shut down. When the external power is disconnected from the unit and then reconnected, the LCD remains off until the power button is pressed. I suspect that the LCD backlight is directly connected to the USB power, which would explain why the firmware cannot control the backlight independently.

tjaworski commented 1 month ago

if the guys in china Shenzhen CYX Industrial Co are reading this, and would like to chime in, I'm all ears :)