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How to control LCD backlight on/off #13

Closed gdivry closed 6 months ago

gdivry commented 7 months ago

Hello why do i have to put the pin 9 high to light the screen ?

Sincerely Gery

imliubo commented 7 months ago

Hi @gdivry ,

Pin 9 is LCD backlight control pin, here is the schematic,

image

Q1 in the picture is NMOS. When you set LCD_BL(Pin 9) to high level, the LCD backlight will be lit.

imliubo commented 6 months ago

Closed for now, feel free to reopen.