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likeablob / macmini

Mac(intosh) mini
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LCD Pins #10

Closed pmar146 closed 3 years ago

pmar146 commented 4 years ago

Hi There, I notice on the LCD, you use pins 8,10 and 13. These are the backlight pins on the LCD. Where do these plug in on the OPI? I was looking at the pinout guide, but can't trace them there. Cheers and thanks

likeablob commented 4 years ago

@pmar146 Hi, in my case, these pins are connected as follows.

LCD Pin Connected to
8 (GND) GND
9, 10 (LED Anode) 3.3V (from OPi)
11 (LED Cathode) NC (to prevent solder bridge)
12,13,14 (LED Cathode) GND (through 100 Ohm)