I programmed the chips and wired up the circuit and it's not working . I can't even get the leds to toggle.
Can you repost the working code for all three ?
The attached files are the code I am running (UNO instead of Mega)
MEGA_SLAVE.ino (409 Bytes)
TRINKET_MASTER.ino (665 Bytes)
TRINKET_SLAVE.ino (295 Bytes)