Guys, I intend to use arduino 24*7. I'm using it in a small industrial bot. I don't want my arduino to draw a higher current than its capability and get damaged. In my application I use 5 digital pins of my arduino as input n rest as output. To make sure OUTPUT pins does not draw more current, I've conneted it to ULN 2803 which is having further connections. I'm okay in that. I want to ask, would it be better to give the input 5 volts to the INPUT pins in my code from the "5V pin of arduino" or "from my 5 Volt regulator IC 7805". My goal is to make sure arduino works for a long period of time..!!
Thanks in advance.. 
