I have a Pixel Qi display (pq3QI-01), it's a display that has reflective mode (can reflect ambient light so it's well visible in the sun). It's a laptop panel that needs a controller board(i have a m.nt68676.2) to make it work. The controller board doesnt control the backlight. I'd like to use the backlight at 10% intensity, i was hoping to use arduino PWM to achieve this, according to the documentation:
Page 13 contains information about the backlight.
Luckily the set of cables that connects the display to the board are divided in two, one group managing the display's LVDS interface and another group the backlight unit.
The controller board (m.nt68676.2) already provides voltage(12v), ground and EN Control Level(5.5v, to enable or disable the backlight)
I was planning on attaching the PWM Control Level cable to a PWM pin on a Leonardo and have the Leonardo send the signal to control the brightness through duty cycle.
Would this work?
Would i need to add a resistor between the Leonardo and the display or the board?