go_away

Author Topic: DC motor  (Read 1642 times)

0 Members and 1 Guest are viewing this topic.

Offline yifei87Topic starter

  • Jr. Member
  • **
  • Posts: 9
  • Helpful? 0
DC motor
« on: September 01, 2008, 06:22:48 AM »
hey,guys,
i would like to find a small DC motor, fast response, high strength and precise to fix my robotic hand project?
any recommendation? thanks for help.

Offline airman00

  • Contest Winner
  • Supreme Robot
  • ****
  • Posts: 3,653
  • Helpful? 21
  • narobo.com
Re: DC motor
« Reply #1 on: September 01, 2008, 06:33:47 AM »
use a servo

Check out the Roboduino, Arduino-compatible board!


Link: http://curiousinventor.com/kits/roboduino

www.Narobo.com

Offline Admin

  • Administrator
  • Supreme Robot
  • *****
  • Posts: 11,663
  • Helpful? 169
    • Society of Robots
Re: DC motor
« Reply #2 on: September 01, 2008, 01:35:10 PM »
Are you asking where to buy a servo?
http://www.societyofrobots.com/robot_parts_list_motors_servos.shtml


Define 'fast' and 'high strength'? ;D

Offline yifei87Topic starter

  • Jr. Member
  • **
  • Posts: 9
  • Helpful? 0
Re: DC motor
« Reply #3 on: September 02, 2008, 02:31:41 AM »
fast = robotic hand need to catch a ball thrown toward it.

high strength= able to raise at least 1 pound things

Offline Admin

  • Administrator
  • Supreme Robot
  • *****
  • Posts: 11,663
  • Helpful? 169
    • Society of Robots
Re: DC motor
« Reply #4 on: September 02, 2008, 04:49:50 AM »
Well, first you need to figure out how fast the ball is going.

Then, given your desired arm length, calculate how fast the motor needs to move the arm.

You also need to know how much the arm weighs.

This should get you started:
http://www.societyofrobots.com/mechanics_statics.shtml
http://www.societyofrobots.com/mechanics_dynamics.shtml
http://en.wikipedia.org/wiki/Angular_velocity

Remember, if you don't calculate it, that means you are only guessing. If you guess wrong, that means you've wasted a lot of money on a motor that won't work ;D

 


Get Your Ad Here

data_list