i`m setting up a "comm" line from pin 13 of one arduino to the pin 13 of another.
getting 1 volt readings when the pin is "HIGH"....booooo
my 10k to ground, and the two leds are munching a considerable amount of that MEGA power!!
how sure are you it is not a problem with the two 1k resistors and the two leds? like from 1-100%?
signal path is (as i understand it) arduino Adiode to ground1k resistor to groundmy 10k resistor to ground
or perhaps it would be a parallel resistance equation...something akin to 1k resistance to ground. i`m not sure what to do....what should i try?
that would give something along the order of 4k resistance wouldn`t it?
i`m using the firmata that comes with the arduino