I am finishing up a senior design project which uses the Mega 2560 board and I have relay driver circuitry wired to the Arduino digital pin 13. The Arduino attaches to a custom designed PCB via the Arduino board headers.
I've noticed that the LED on pin 13 blinks while a sketch is being uploaded or the board is resetting which is then engaging and disengaging the relay also tied to pin 13.
Is there any way to disable this pin 13 "blinking" while resetting or uploading a sketch? I'd like to limit the number of actuations on the relay so as to not decrease its lifespan.
I realize I should have considered this in my PCB design but now that it's been fabbed and assembled I'm looking for a way around.