I'd like there to be a button on the touchscreen that cuts power to the screen's LED pin, and then any touch on the screen restores power. Even with nothing on the screen, the backlight is too bright to have the screen displayed next to my LED strip.
Ideas I have:
1. Use a PWM or digital pin to provide power to the screen's LED pin
2. Use a transistor controlled by a digital pin to provide power
I'd like to do option 1 since it doesn't add any hardware components. I'm just concerned that the screen may require more current than a digital pin can supply. I'm also wondering if I'd still need the 100 ohm resistor between the power source and the screen.
Ideas I have:
1. Use a PWM or digital pin to provide power to the screen's LED pin
2. Use a transistor controlled by a digital pin to provide power
I'd like to do option 1 since it doesn't add any hardware components. I'm just concerned that the screen may require more current than a digital pin can supply. I'm also wondering if I'd still need the 100 ohm resistor between the power source and the screen.