FIRST, controllong a Victor Spped Controller
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I'm the parent advisor to a rookie FIRST robotics team. This year we
defined a requirement in working with the Victor controller: we want to
interface w the controller in an unusual way. The controller has a jumper on
it. This is called the 'brake/coast' jumper and it determines how the
controller will behave when it gets no input. It can either act as a shunt
to the load or become an open circuit. The jumper goes on terminals A-B or
B-C. In our contest it is advantageous for the jumper to be on coast during
the 2 minute contest and for it to be on brake when the power is shut down by
the contest controlling computer. Thus we need a set of output pins from the
stamps computer which will act just like a single pole double throw relay.
Any suggestions?
Charlie Affel, caffel@a...
defined a requirement in working with the Victor controller: we want to
interface w the controller in an unusual way. The controller has a jumper on
it. This is called the 'brake/coast' jumper and it determines how the
controller will behave when it gets no input. It can either act as a shunt
to the load or become an open circuit. The jumper goes on terminals A-B or
B-C. In our contest it is advantageous for the jumper to be on coast during
the 2 minute contest and for it to be on brake when the power is shut down by
the contest controlling computer. Thus we need a set of output pins from the
stamps computer which will act just like a single pole double throw relay.
Any suggestions?
Charlie Affel, caffel@a...
Comments
pins w/o
breaking a rule. You must use the I/O provided, and that's a bit
frustrating.
The Victor 883 speed controller defaults to BRAKE if no jumper is installed.
You could use a reed switch and electromagment, or limit switch actuated by
a servo to
de-select BRAKE for the competition.
When the radio communication is stopped at the end of a match, current stops
flowing
and the reed switch or limit switch opens, thereby selecting the brake mode
by default.
Original Message
From: caffel@a... <caffel@a...>
To: basicstamps@egroups.com <basicstamps@egroups.com>
Date: Monday, May 01, 2000 4:06 PM
Subject: [noparse][[/noparse]basicstamps] Re: FIRST, controllong a Victor Spped Controller
>I'm the parent advisor to a rookie FIRST robotics team. This year we
>defined a requirement in working with the Victor controller: we want to
>interface w the controller in an unusual way. The controller has a jumper
on
>it. This is called the 'brake/coast' jumper and it determines how the
>controller will behave when it gets no input. It can either act as a shunt
>to the load or become an open circuit. The jumper goes on terminals A-B or
>B-C. In our contest it is advantageous for the jumper to be on coast
during
>the 2 minute contest and for it to be on brake when the power is shut down
by
>the contest controlling computer. Thus we need a set of output pins from
the
>stamps computer which will act just like a single pole double throw relay.
>Any suggestions?
>Charlie Affel, caffel@a...
>
>
>