[Robotgroup] BS2 to Sabretooth 2x10 RCMC?

[Gray Mack]

from looking at the pdf, make sure the dip switches are correct. Probably turn off the auto-calibrate switch (5). Check the other switches too and make sure you understand their significance.

Put a switch between the battery and the B+ that way you can kill the motors quickly without disabling the logic circuits or yanking wires :)

If it would help, I can bring an RC radio and receiver so we could eliminate the basic stamp from the test.

Also, if you are ready to show it off to the masses, get on the dorkbot schedule as a presenter, they love in-the-works projects as much as completed stuff.

-Gray

--- On Wed, 8/20/08, LHudson <lhudson73 at yahoo.com> wrote:

> From: LHudson <lhudson73 at yahoo.com>
> Subject: [Robotgroup] BS2 to Sabretooth 2x10 RCMC?
> To: Robotgroup at puremagic.com
> Date: Wednesday, August 20, 2008, 1:39 PM
> Ugh.
>  
> It has two speeds:  really fast, and backwards really
> fast.  
>  
> ' {$STAMP BS2}
> ' {$PBASIC 2.5}
> DO
>   ' !-- Execute a Movement Command
>   PULSOUT 13, 750
>   PULSOUT 14, 750
>   PAUSE 20
> LOOP
>  
> Anything >= 750 makes the motor go really fast. 
> Anything < 750 makes the motor go backwards really
> fast.  Responses posted to Parallax or Lynxmotion forums
> imply that the Sabretooth responds to the PULSOUT command in
> the same fashion as the BOE-BOT CR servos.  Just about
> every post seems to be resolved with "I connected it to
> the BS2 Ground and now it works".  However I don't
> see anything that looks like this in the wiring diagram. 
> Is this because they are using the Sabretooth 2x10 MC and
> not the RCMC?
>  
> Also, it is impossible to stop the motors without yanking
> the wires leading from the RCMC to the motors.  I believe
> that turning off the BOE also stops the motors however
> usually I'm in some sort of panic state and forget to
> confirm this conclusively by writing it down or something. 
> If I disconnect the wires leading from the MC to the
> battery, the green power indicator LED remains lit. 
> However if I then switch off the BOE or disconnect the servo
> leads, the green power indicator turns off.
>  
> These are the documents for this MC:
> http://www.dimensionengineering.com/datasheets/Sabertooth2x10RC.pdf
> http://www.dimensionengineering.com/datasheets/Sabertooth-2X10-RC-diagram.jpg
> http://www.dimensionengineering.com/datasheets/Sabertooth-2X10-RC-DIPs.jpg
>  
> I am using this battery:  
> http://www.hobbymasters.com/index.asp?PageAction=VIEWPROD&ProdID=382. 
> 
>  
> Googling "Power Wheel 6 volt" returns a lot of
> batteries that are red, but mine is Blue.  I forgot to
> check last night to see if it was NiCD or Li.  I asked
> Bonnie to look and and she said neither -- "Pb". 
> 
>  
> Anybody?
> 
> L. Scott Hudson
>  
> "There are known knowns. These are things we know that
> we know. There are known unknowns. That is to say, there are
> things we know we don't know. But, there are also
> unknown unknowns. These are things we don't know we
> don't know." 
>  
> -- Donald Rumsfeld, describing the IBM "Rational
> Software" Platform
> 
> 
>       
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