Pages: [1]   Go Down
Author Topic: motor bi-directionality issue  (Read 698 times)
0 Members and 1 Guest are viewing this topic.
Offline Offline
Full Member
***
Karma: 0
Posts: 158
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

I have one of these (http://www.goldmine-elec-products.com/prodinfo.asp?number=G17949) motors connected to an H-bridge. It's part of a pulley system that lowers an object up and down on a string. It lowers the object down just fine; however, whenever I try to lift it back up again, the object gets stuck very easily, and lately the motor has begun to make a strange noise that I instinctively sense it should not be making.

Does anybody have any clue why? I'm running it off of the 5v supplied by the arduino.
Logged

Offline Offline
Full Member
***
Karma: 0
Posts: 158
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Here's a photo of my setup, btw.


* Photo on 2011-10-28 at 07.21.jpg (88.3 KB, 640x480 - viewed 13 times.)
Logged

New Jersey
Offline Offline
Faraday Member
**
Karma: 67
Posts: 3701
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Quote
I'm running it off of the 5v supplied by the arduino.

Sounds like the first thing to try is more power, your motor likely needs more current than the arduino can provide when it's working harder (lifting). Also, it can take a rather higher voltage.
Logged

Offline Offline
Full Member
***
Karma: 0
Posts: 158
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

How would I do that if my whole H-bridge is connected to the Arduino? Could I use a 9v battery? How would I do that without messing up everything that's connected to the Arduino?
Logged

Offline Offline
Full Member
***
Karma: 0
Posts: 158
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Can I just power the entire arduino using 9v?
Logged

0
Offline Offline
Tesla Member
***
Karma: 145
Posts: 9631
Arduino rocks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Quote
Can I just power the entire arduino using 9v?

Maybe for a minute or so. H-bridges usually have provisions for using an external power source for the gizmo being powered. 9v might be ok for only the arduino, but bigger batterys are needed for motors.
Logged

Consider the daffodil. And while you're doing that, I'll be over here, looking through your stuff.   smiley-cool

Global Moderator
Boston area, metrowest
Offline Offline
Brattain Member
*****
Karma: 538
Posts: 27114
Author of "Arduino for Teens". Available for Design & Build services. Now with Unlimited Eagle board sizes!
View Profile
WWW
 Bigger Bigger  Smaller Smaller  Reset Reset

"Current drain unloaded is 0.46 Amps at 12VDC."

What H-Bridge are you using to power this motor?
Logged

Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

Pages: [1]   Go Up
Jump to: