RoboSavvy Forum

Anyone know how to control brushed DC motors?

2010-03-05T04:18:38+01:00

PAR_WIG410 wrote:
But, I was looking for something a little less expensive.
I have recently found these:
http://www.robotshop.com/cytron-5-19v-10a-brushed-motor-controller.html
I'm planning on practicing with these, they should be sufficient for now, I'll start saving money for more heavy duty controllers.
Do any cheaper, high-ish (~20A) current controllers exist that are compatible with the RB-100?
Is any signal type better for this job?

The user manual of this motor controller says that it is controlled by PWM/DIR signals. So you can use RB-100 to control it by 1-channel PWM (to the PWM pin of the motor controller) and 2-channel GPIO (to the DIR and RUN pins of the motor controller). For the functionality of PWM and GPIO of RB-100, please refer to the software introduction slide in http://www.roboard.com/download_ml.htm

Statistics: Posted by roboard — Fri Mar 05, 2010 4:18 am

Anyone know how to control brushed DC motors?

2010-03-05T04:02:12+01:00

Thank you for the response
Two channels is good, high current is good,
But, I was looking for something a little less expensive.
I have recently found these:
http://www.robotshop.com/cytron-5-19v-10a-brushed-motor-controller.html
I'm planning on practicing with these, they should be sufficient for now, I'll start saving money for more heavy duty controllers.
Do any cheaper, high-ish (~20A) current controllers exist that are compatible with the RB-100?
Is any signal type better for this job?

Statistics: Posted by PAR_WIG410 — Fri Mar 05, 2010 4:02 am

Re: Anyone know how to control brushed DC motors?

2010-03-05T03:49:35+01:00

PAR_WIG410 wrote:
How does one control standard brushed, non-servo, DC motors with the Roboard?
-------------------------------------------
Should I use external motor controllers/relays or is it possible to run them directly from the roboard?
-If Motor controllers are used, What kind do you recommend?
-How does one run a relay off the roboard?
-If possible, How does one control the motor directly off the roboard?

Using the PWM lib in RoBoIO, you can generate high-resolution PWM pulses for the H-bridge or Motor controller that drives the DC motor. You can refer to PWM.h of RoBoIO source codes for understanding the functionality of the PWM lib.

A example that uses RoBoard to directly and simultaneously control 13 DC motors (with 13 freescale MC33887 H-bridges) can be seen at:
http://hackaday.com/2010/01/07/ces-robo ... otic-hand/

Statistics: Posted by roboard — Fri Mar 05, 2010 3:49 am

Anyone know how to control brushed DC motors?

2010-03-04T17:18:44+01:00

http://www.dimensionengineering.com/Sabertooth2X25.htm

I own one of those and has lots of options for inputs for control.

Most of the the Roboard can generate.

Statistics: Posted by comds — Thu Mar 04, 2010 5:18 pm

Anyone know how to control brushed DC motors?

2010-02-28T00:34:40+01:00

How does one control standard brushed, non-servo, DC motors with the Roboard?
-------------------------------------------
Should I use external motor controllers/relays or is it possible to run them directly from the roboard?
-If Motor controllers are used, What kind do you recommend?
-How does one run a relay off the roboard?
-If possible, How does one control the motor directly off the roboard?

Statistics: Posted by PAR_WIG410 — Sun Feb 28, 2010 12:34 am