I got a $20 orange pi from here, which was a very good deal even without a cord, i didn't realize that it didn't come with a power cord, so i made one.
Step 1: I Wanted a USB Connector, So That's What I Made
The plug on the pi is a 5mm plug and i wanted a USB plug
Step 2: Find a 5mm Plug and a Female Usb Port
Solder the two together 5v to 5v and gnd to gnd. MAKE SURE THE POLARITY IS RIGHT!!!!!
Step 3: Connect It Up and Your Done
Your orange pi should boot up no problem