Pages: [1]   Go Down
Author Topic: Powering an Arduino Nano  (Read 588 times)
0 Members and 1 Guest are viewing this topic.
Offline Offline
Newbie
*
Karma: 0
Posts: 35
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Hi all,

I'm building a project using an Arduino Nano, and I can't quite work out how to power it (other than USB). Elsewhere in the project, I'm powering a pump using a 12V adapter, capable of 3amps. The pump pulls a maximum of about 1.2amps - so I'm wondering if I can also rig the nano up to this. Hunting around the interwebs, I find that ...

Quote
The Arduino Nano can be powered via the Mini-B USB connection, 6-20V unregulated external power supply (pin 30), or 5V regulated external power supply (pin 27). The power source is automatically selected to the highest voltage source.

... I'm reading that this means I can run power through pin 30. But, I'm left with two questions ...

1. Where the devil is Pin 30? It's not easily identifiable from the board.

2. Do I just connect ground on the board up to ground on the supply?

Thanks for any help.
Mark.
Logged

Offline Offline
Edison Member
*
Karma: 65
Posts: 2499
Now, More Than Ever
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

See
http://ep.yimg.com/ca/I/yhst-27389313707334_2230_47792144

Aren't the pins on yours labelled as they are in this picture?

Quote
1. Where the devil is Pin 30? It's not easily identifiable from the board.
Pin 30 (Vin) is there right next to the ICSP header and Gnd is right next to it.

Quote
2. Do I just connect ground on the board up to ground on the supply?
Yes.
Logged

"Hello, I must be going..."
"You gotta fight -- for your right -- to party!"
Don't react - Read.
"Who is like unto the beast? who is able to make war with him?"

Offline Offline
Newbie
*
Karma: 0
Posts: 35
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Great - cheers. I suspected vin, but was confused by the pin 30 reference. Ta .

M
Logged

Pages: [1]   Go Up
Jump to: