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Controlling Sabertooth DE-05 with a BOT Board II

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New ( offline )
Posts: 9
Posted: 2011-05-13 00:23 
Hello,

I am trying to piece together the equipment for an industrial project I am working on that uses a Sabertooth DE-05 to control the speed of a DC Motor. In the same project I have a BOT Board II that is only controllling 3 servos. There is a lot of leftover I/O that I would like to put to good use. Could I use one of the servo I/O running 5v as a potentiometer to control the Sabertooth DE-05? Otherwise could I use the BOT Board II to latch on 5v to start the Sabertooth and remove 5v to stop it? I am completely new to Lynxmotion products and robotics in general, but not to basic electronics concepts and programming.

Thanks so much for taking the time to read my post,
Ben


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Guru ( offline )
Posts: 3298
Posted: 2011-05-13 16:50 

????????

I dont know much about the sabertooth but..
Quote:
Could I use one of the servo I/O running 5v as a potentiometer to control the Sabertooth DE-05?

this thread might help:
viewtopic.php?f=6&t=4362&start=30

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Guru ( offline )
Posts: 4118
Posted: 2011-05-13 18:06 
Let me take a stab at it.

You could gut out an R/C servo, removing the motor and electronics, and connecting the center wiper of the pot to the center lead of the servo. Do an A/D read of the pot with the BB II.

(motor could be left in for some drag, if desired).

Alan KM6VV

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New ( offline )
Posts: 9
Posted: 2011-05-24 21:45 
Thanks very much for the information... especially the drawn out diagram. This will be quite helpful. I am going to look up the SSC-32 to see if it will solve my problem. I will let you all know how it goes.

Also, I went ahead and bought the bot (hahaha) board II and Sabertooth, so once I get it set up, I can run some tests. Dissassembling a Servo probably wont be necessary. Great idea though.

Thanks,
Ben


New ( offline )
Posts: 9
Posted: 2011-07-25 20:48 
Thanks again you two for the ideas. They drove me down the right path for the solution. I ended up using the bot boards general IO to create a PWM that controlled the sabertooth in analog mode. It is not that fancy and provides no real feedback, but it gets the job done. Next I need to figure out why my hservo commands are not working.... but that is going in another post.

Thanks,
Ben


 

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