I could probibly find this online, but after 5 min of googling i gave up...i prefer human interaction anyway. well i have a project that would require my arduino micro to have an external power source. ex a 9v battery. what would be the best way to hook this up?
@ lar3ry....no its not an uno itsa micro, there is no power port, only a micro usb port
@MichaelMeissner...I didnt think about the usb batter bank and i really like that idea and ill definitely keep that in mind, but....the space that i have to fit this in is a .7'' pipe...so AA batteries and battery banks are just too big. i think that im going have to redo my design so that the arudino is outside the pipe, im open to any ideas you have, and mindyou its underwater, the arudino is completely underwater, so some power options are not possible.
Tell us more about the project. What all has to be in the .7" pipe? It doesn't sound like the micro will fit if it has to be waterproofed, unless the pipe is completely closed.
How long does this need to run for? How long is the the pipe? How complex is your setup (i.e. how many pins, etc. do you need)?