Home made pressure transducer
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Home made pressure transducer
People making staging or deployment mechs based around measuring pressure in a vessel might find this of interest. Very simple pressure transducer made using conductive foam of the kind used for packing and transporting integrated circuits, giving a variable resistance with a fairly linear response to changes.
http://www.instructables.com/id/How-to- ... ressure-S/
Should be possible to package this as an air pressure sensor by popping it into a compressible container. Would need some additional circuitry to tune it for the range of pressures required, I suppose.
http://www.instructables.com/id/How-to- ... ressure-S/
Should be possible to package this as an air pressure sensor by popping it into a compressible container. Would need some additional circuitry to tune it for the range of pressures required, I suppose.
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Re: Home made pressure transducer
I really like this idea. The mechanism is very "solid-state" in the sense that it has no real moving parts. The circuitry could be as simple as a couple of resistors and a comparator (or a Schmitt trigger if the sensor fluctuates a lot) which you could use to control a small dc motor.
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Re: Home made pressure transducer
Put it inside a balloon or maybe dip it into that rubber you dip tool handles into!rockets-in-brighton wrote:People making staging or deployment mechs based around measuring pressure in a vessel might find this of interest. Very simple pressure transducer made using conductive foam of the kind used for packing and transporting integrated circuits, giving a variable resistance with a fairly linear response to changes.
http://www.instructables.com/id/How-to- ... ressure-S/
Should be possible to package this as an air pressure sensor by popping it into a compressible container. Would need some additional circuitry to tune it for the range of pressures required, I suppose.
Cool find!
Spaceman Spiff
"What goes up, must come down"
"What goes up, must come down"
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Re: Home made pressure transducer
Plastikote: I think what he was suggesting was a variation on that.Spaceman Spiff wrote: Put it inside a balloon or maybe dip it into that rubber you dip tool handles into!
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Re: Home made pressure transducer
This idea is genius! I think you don't need to make it so it is completely encased. What if you just made a diaphragm out of an inner tube or something and put it over the foam but you put that inside a bottle cap and threaded it onto the open neck at the top of your rocket pressure vessel?rockets-in-brighton wrote:Plastikote: I think what he was suggesting was a variation on that.Spaceman Spiff wrote: Put it inside a balloon or maybe dip it into that rubber you dip tool handles into!
Tim Chen
Captain, Team Enterprise
Captain, Team Enterprise
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Re: Home made pressure transducer
Great discovery, Steve!rockets-in-brighton wrote:People making staging or deployment mechs based around measuring pressure in a vessel might find this of interest. Very simple pressure transducer made using conductive foam of the kind used for packing and transporting integrated circuits, giving a variable resistance with a fairly linear response to changes.
http://www.instructables.com/id/How-to- ... ressure-S/
Should be possible to package this as an air pressure sensor by popping it into a compressible container. Would need some additional circuitry to tune it for the range of pressures required, I suppose.
Thanks for putting it out there!
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Visit USWaterRockets.com
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Opportunity is missed by most people because it is dressed in overalls and looks like work. --Thomas Edison