Could a TFT hardware expert please help me?
I just received a Mega TFT shield as shown in attached and it works on a Mega with a 5V TFT.
So, it feeds 5V on the VCC pin (pin 2) and 3.3V on the LED_A pin (pin 19).
There is a little jumper below the regulator and if I short it , the only change I noticed is 5V on the LED_A pin which make my 5V TFT brighter
From previous (bad) experience I know my other TFT needs 3.3V on VCC and LED_A pins.
My question is…
If I disconnect pin 2 ( break it up) and feed 3.3V to the pin 2 from the regulator, will my TFT work with my 3.3V TFT. I think the answer is YES - please confirm?
I am assuming (correctly I hope) all other pins are running at 3.3V for all types of TFT.