Recently i've made my own Arduino Uno (atmega328p-pu). I've followed the tutorial on the arduino playground, but the problem is that i can only power it trough a power regulator.
That only allows it to be powered with 7-12 volts, but i want an option to power it with the 5v output of another Arduino uno (the Uno as ISP); that's why i need a regulated 5v input pin.
Does anybody know how to do it? Thanks in advance.