Pages: [1]   Go Down
Author Topic: Motor shield info  (Read 643 times)
0 Members and 1 Guest are viewing this topic.
0
Offline Offline
Newbie
*
Karma: 0
Posts: 21
Arduino rocks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Hello,

Is it possible to power motor with an aother source than the arduino board?

Thanks
Logged

Copenhagen / Denmark
Offline Offline
Edison Member
*
Karma: 5
Posts: 2360
Do it !
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

If you mean : is it possible to control a motor from an Arduino board and power the motor from a seperate powersupply, then the answer is yes. Actually with most motors this is required since the Arduini board can only source a very limited amount of current. Muc less than most motors will need.

Check this example : http://www.tigoe.net/pcomp/code/category/code/picbasic-pro/62

Its not Arduino but the setup is exactly the same for Arduino use.
Logged

USA
Offline Offline
Jr. Member
**
Karma: 0
Posts: 73
Arduino rocks
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

Here is a simple example of serially controlling a fan motor with PWM. The code is posted in the code tab.

http://www.liquidware.org/view.php?id=75

The schematic is also shown there too. It's amazing how easy it is.
« Last Edit: April 06, 2008, 09:33:08 am by AVRman » Logged


0
Offline Offline
Newbie
*
Karma: 0
Posts: 21
Arduino rocks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Yes, but can i do that with the arduino motor shield v1.1?
Logged

0
Offline Offline
God Member
*****
Karma: 2
Posts: 854
Arduino rocks!
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Quote
Yes, but can i do that with the arduino motor shield v1.1?

Yes, that is how it's supposed to be done.  On Ladyada's shield for example, the power input is the 2 terminal block on left corner of the lower side.
Logged

0
Offline Offline
Newbie
*
Karma: 0
Posts: 21
Arduino rocks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

But on this shield http://mcukits.com/?p=15 ? Is there connection for external power supply?
Logged

0
Offline Offline
God Member
*****
Karma: 2
Posts: 854
Arduino rocks!
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

I'm pretty sure that's the power terminals at the bottom center of the board, and from the schematic, that seems to be the case as well.
Logged

0
Offline Offline
Full Member
***
Karma: 0
Posts: 239
Arduino rocks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

The squiggly shaped motor driver (which is referred to as the Arduino/Freeduino motor driver) doesnt have a dedicated power connection for a motor. You'll have to cut the 9V pin and one of the grounds at the bottom there and connect a wire from your seperate power supply. Otherwise you'd be powering the Arduino from that voltage.
Logged

0
Offline Offline
Newbie
*
Karma: 0
Posts: 21
Arduino rocks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Thanks ladyada (Ilium?)
Logged

Pages: [1]   Go Up
Jump to: