Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: Hawaii00000 on February 19, 2009, 10:36:11 PM

Title: "Servoify" a dc motor.
Post by: Hawaii00000 on February 19, 2009, 10:36:11 PM

I'm thinking of building a large robot with wheelchair motors, and I don't want to use a H-bridge. Where can I find a circuit that will "servoify" a wheelchair motor?

Title: Re: "Servoify" a dc motor.
Post by: madchimp on February 20, 2009, 12:40:40 AM

are these for drive motors or are they going to moving legs or arms or something similar?

Title: Re: "Servoify" a dc motor.
Post by: SmAsH on February 20, 2009, 12:45:16 AM

if theyre wheelchair motors wouldnt they be for drive?

Title: Re: "Servoify" a dc motor.
Post by: madchimp on February 20, 2009, 12:55:57 AM

Quote from: SmAsH on February 20, 2009, 12:45:16 AM

if theyre wheelchair motors wouldnt they be for drive?

thats what i thought but why bother with added trouble to "servoify" them if you cant use the feedback that would normally be the whole point of a servo maybe I'm just missing something wouldn't be the first  :D

Title: Re: "Servoify" a dc motor.
Post by: SmAsH on February 20, 2009, 12:58:07 AM

well, why would you need to 'servoify' a motor? you could just as easily get a motor controller which is what most people do. but if your board your using only has servo outputs there should be a board out there that converts the signal but i have never seen such a thing.

Title: Re: "Servoify" a dc motor.
Post by: paulstreats on February 20, 2009, 09:22:12 AM

Servos themselves have built in hbridges so in order to create a servo with wheelchair motors you would still need to add an hbridge