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move LCD backlight control to direct I/O pin #66

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marcmerlin opened this issue Mar 23, 2017 · 0 comments

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marcmerlin commented Mar 23, 2017

like pin 2.
Why?

getting basic TFT example code is a pain in the rear due to the amount of extra code required just to turn the LCD backlight on
to dim the LCD, you need to do PWM, and doing it via the port expander is too slow and too expensive to work well

marcmerlin mentioned this issue

Pins 37/38 are unused, high res input only, use one of them for battery and free up GPIO2 #67

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