I've got a timer that I designed with the help of some very nice people on this forum. It has been working great on various projects, but I have to now make a couple changes because of the IO demand.
I use a 3.2 inch TFTLCD shield, see attached image below, which is connected to my Mega board directly and uses up all the pins on the one side of the board. My question is, does anyone know if any of the 40 pins are unused? I was hoping that I could raise the shield away from the Arduino in order to leave some of the pins unused so that I can use them for other relays.
I hope someone could help me, I've been looking for schematics, but can't seem to find the correct one for this exact board that shows whether any are unused.
Seriously. A Shield plugs intimately with your MEGA2560. You can't really get at those NC sockets.
However there are multiple ADC, PWM, UART, TWI, ... pins available. Just buy some right-angle header strip. You can connect Duponts to any of the available pins. Double-row right-angle will fit best but single-row is ok if you are careful.
Thank you for the reply,
Does NC mean "normally closed"? And is it closed on the screen side and not used to run the screen?
I have some riser pins to lift the screen away from the Arduino, and then with some right angle pins I'll get to them. If I have to I'll even cut the pins if they're not needed.
