Stretch Sensor ? not found yet
Archiver
Posts: 46,084
Thanks again Bruce, but also is not this that I am searching.
The sensor I am looking is a black rubber rod about 1/4" dia. with
several lenghts from 1" to 10' that have mechanical and electrical
connectors at both ends. Resistence between the ends changes when the
rod is stretched. I believe can be stretched about 100 % of its lenght.
A time ago about 1~2 years someone posted here a URL for the device but
I cant fing it again. I am making web searches but unsucessfully.
Regards;
ACJacques
Bruce Bates wrote:
>
> At 09:02 AM 7/20/00, you wrote:
> >Thanks also for Bruce Bates but the sensor I am looking is not this
> >Flex(bend)Sensor. It seems like e an elastic rubber wire that can
> >change in its lenght.
>
> Are you looking for the pneumatic muscle arm actuator ?
>
> Perhaps you are looking for Muscle Wire, which changes it's length due to
> heat, and returns to its pre-stressed length upon cooling ??? It is often
> the general belief that it is electricity that causes the change in length,
> but in reality, it is the heat caused by the current flow. It can be used
> BOTH as an actuator, and as a stress/strain element (I believe) although
> the sales pitch is towards the former, not the latter.
>
> Muscle wire can be found from various sources, HVWTech [noparse][[/noparse] www.hvwtech.com ],
> and Mondotronics ("The Robot Store") and others, as well. The proper
> trademarked name is Nitrinol wire (I believe) due to the alloy, and
> pre-stressing techniques. It is available in various wire sizes and small
> bar stock.
>
> Regards,
>
> Bruce Bates
> >ACJacques
> >
> >Carl McIver wrote:
> > >
> > > http://www.imagesco.com/index.html
> > >
> > >
Original Message
> > > From: A.C.Jacques <acjacques@i...>
> > > To: <basicstamps@egroups.com>
> > > Sent: Wednesday, July 19, 2000 4:11 AM
> > > Subject: [noparse][[/noparse]basicstamps] Stretch Sensor ?
> > >
> > > > Does anyone could remember the site of a stretch sensor that is a
> > > > conductive rubber wire that changes its resistance when stretched and
> > > > was pointed here a time ago ?
> > > > I have searched the web but without success.
> > > > Thanks for any help.
> > > >
> > > > ACJacques
> > > >
> > > >
> > > >
> > > >
The sensor I am looking is a black rubber rod about 1/4" dia. with
several lenghts from 1" to 10' that have mechanical and electrical
connectors at both ends. Resistence between the ends changes when the
rod is stretched. I believe can be stretched about 100 % of its lenght.
A time ago about 1~2 years someone posted here a URL for the device but
I cant fing it again. I am making web searches but unsucessfully.
Regards;
ACJacques
Bruce Bates wrote:
>
> At 09:02 AM 7/20/00, you wrote:
> >Thanks also for Bruce Bates but the sensor I am looking is not this
> >Flex(bend)Sensor. It seems like e an elastic rubber wire that can
> >change in its lenght.
>
> Are you looking for the pneumatic muscle arm actuator ?
>
> Perhaps you are looking for Muscle Wire, which changes it's length due to
> heat, and returns to its pre-stressed length upon cooling ??? It is often
> the general belief that it is electricity that causes the change in length,
> but in reality, it is the heat caused by the current flow. It can be used
> BOTH as an actuator, and as a stress/strain element (I believe) although
> the sales pitch is towards the former, not the latter.
>
> Muscle wire can be found from various sources, HVWTech [noparse][[/noparse] www.hvwtech.com ],
> and Mondotronics ("The Robot Store") and others, as well. The proper
> trademarked name is Nitrinol wire (I believe) due to the alloy, and
> pre-stressing techniques. It is available in various wire sizes and small
> bar stock.
>
> Regards,
>
> Bruce Bates
> >ACJacques
> >
> >Carl McIver wrote:
> > >
> > > http://www.imagesco.com/index.html
> > >
> > >
Original Message
> > > From: A.C.Jacques <acjacques@i...>
> > > To: <basicstamps@egroups.com>
> > > Sent: Wednesday, July 19, 2000 4:11 AM
> > > Subject: [noparse][[/noparse]basicstamps] Stretch Sensor ?
> > >
> > > > Does anyone could remember the site of a stretch sensor that is a
> > > > conductive rubber wire that changes its resistance when stretched and
> > > > was pointed here a time ago ?
> > > > I have searched the web but without success.
> > > > Thanks for any help.
> > > >
> > > > ACJacques
> > > >
> > > >
> > > >
> > > >