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In lugnet.robotics, Soh Chio Siong writes:
> Jennifer Clark wrote:
> >
> > c s soh wrote:
> >
> > > I don't know how or why but I don't seem to have come across it. I guess
> > > I could try to build one but it'll help if you could give me a link or
> > > reference to it.
> >
> > Sure - I made a rather ugly version of it including limit switch for my skid
> > steer loader model. There is a picture here; I don't actually think many
> > modifications other than replacing the small and large pully with 8 and 40 tooth
> > gears were needed. I still see this compressor section as Michaels's effort
> > since the modification is fairly obvious;
> >
> > http://www.telepresence.strath.ac.uk/jen/lego/ls160_lrg/ls160_compressor_pic1.htm
> >
> > http://www.telepresence.strath.ac.uk/jen/lego/ls160_lrg/ls160_compressor_pic2.htm
> >
> > I added an extra 9V motor for the excavator model to provide increased airflow,
> > although I suppose that is cheating ;-) anyway, the picture is near the bottom
> > of the page:
> >
> > http://www.telepresence.strath.ac.uk/jen/lego/excavator.htm
> >
> > I also have a hand controller with built in limit switch, although it is really
> > the same as Ralph Hempel's design spread flat and using the full pump stroke:
> >
> > http://www.telepresence.strath.ac.uk/jen/lego/ideas.htm
>
>
> Thanks, Jen. I'll have a go at it.
>
> > > But really, with this pressure sensor
> > > thing, limit switches would soon be obsolete.
> >
> > True enough! But some of us Luddites don't even have an RCX :-)
> >
> > The pressure limit switch is also a lot cheaper and more compact to include in
> > models than the RCX.
>
>
> Well, I was just thinking to what extent you could take the pressure
> sensor device.
> Actually, most of my own creations don't use the RCX. And they're mostly
> powered by the manually operated hand pump.
Those pressure switches look quite neat! It's one step closer to the
establishment of a link between the pneumatic system and the RCX...
BTW I was just browsing your website (really great site BTW) and had a
question...do you know what type of pressure gauge you used on the creation
on the main page? I've been trying to find an air pressure measurement
device which works with the Lego pneumatic system for some time now but have
had no luck...
-Gaurav Thakur, raving madman
Can be reached at cp5670@supermail.com
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