Electronic Pressure Pads

Hi all,

I'm looking for electronic pressure pads (to detect a change in pressure
applied by a mechanical level without the need for springs or other
mechanical weighing devices.. something in the form of responding to a
change in resistance caused by pressure?). I know they're out there in
different forms, but I haven't quite found what I'm looking for. The pads
themselves don't need to be large.. in the range of 1x1cm to 1x1inch. The
main goal is to weight something in the range of 10kgs on an arm that pivots
on one end, and that end presses against a sensor that detects the weight
(with an emphasis on the idea that the arm can't deviate from the original
position)

Anybody know of an item like this? and if so where to buy it?

Frazer RM Ross

 

[Luhan Monat]

frazer_ross@hotmail.com wrote:

Hi all,

I'm looking for electronic pressure pads (to detect a change in pressure
applied by a mechanical level without the need for springs or other
mechanical weighing devices.. something in the form of responding to a
change in resistance caused by pressure?). I know they're out there in
different forms, but I haven't quite found what I'm looking for. The pads
themselves don't need to be large.. in the range of 1x1cm to 1x1inch. The
main goal is to weight something in the range of 10kgs on an arm that pivots
on one end, and that end presses against a sensor that detects the weight
(with an emphasis on the idea that the arm can't deviate from the original
position)

Anybody know of an item like this? and if so where to buy it?

Frazer RM Ross


Hi,

The device you want is called a 'force sensing resistor' (FSR). They
look like a membrane switch and can be in any size or resistance range.

I used to work with these but you may have to 'google' around a bit to
see where you can buy them in small quantities...

Luhan Monat

 

Perfect. This is exaclty what I wanted.

Thank you very much,

Frazer RM Ross

Device info can be found at
http://www.windsynth.org/iwsa_labs/hardware_information/fsr_specifications.shtml
for all others whom might be interested in this type of resistor.


"Luhan Monat" <luhanknows@yahoo.com> wrote in message
news:VUalb.62411$La.50141@fed1read02...

frazer_ross@hotmail.com wrote:
Hi all,

I'm looking for electronic pressure pads (to detect a change in pressure
applied by a mechanical level without the need for springs or other
mechanical weighing devices.. something in the form of responding to a
change in resistance caused by pressure?). I know they're out there in
different forms, but I haven't quite found what I'm looking for. The
pads
themselves don't need to be large.. in the range of 1x1cm to 1x1inch.
The
main goal is to weight something in the range of 10kgs on an arm that
pivots
on one end, and that end presses against a sensor that detects the
weight
(with an emphasis on the idea that the arm can't deviate from the
original
position)

Anybody know of an item like this? and if so where to buy it?

Frazer RM Ross


Hi,

The device you want is called a 'force sensing resistor' (FSR). They
look like a membrane switch and can be in any size or resistance range.

I used to work with these but you may have to 'google' around a bit to
see where you can buy them in small quantities...

Luhan Monat

 

[Al]

In article <cGklb.140606$9l5.3717@pd7tw2no>, <frazer_ross@hotmail.com>
wrote:

Perfect. This is exaclty what I wanted.

Thank you very much,

Frazer RM Ross

Device info can be found at
http://www.windsynth.org/iwsa_labs/hardware_information/fsr_specifications.sht
ml
for all others whom might be interested in this type of resistor.


"Luhan Monat" <luhanknows@yahoo.com> wrote in message
news:VUalb.62411$La.50141@fed1read02...
frazer_ross@hotmail.com wrote:
Hi all,

I'm looking for electronic pressure pads (to detect a change in pressure
applied by a mechanical level without the need for springs or other
mechanical weighing devices.. something in the form of responding to a
change in resistance caused by pressure?). I know they're out there in
different forms, but I haven't quite found what I'm looking for. The
pads
themselves don't need to be large.. in the range of 1x1cm to 1x1inch.
The
main goal is to weight something in the range of 10kgs on an arm that
pivots
on one end, and that end presses against a sensor that detects the
weight
(with an emphasis on the idea that the arm can't deviate from the
original
position)

Anybody know of an item like this? and if so where to buy it?

Frazer RM Ross


Hi,

The device you want is called a 'force sensing resistor' (FSR). They
look like a membrane switch and can be in any size or resistance range.

I used to work with these but you may have to 'google' around a bit to
see where you can buy them in small quantities...

Luhan Monat

You might acheive the same effect by using conductive black foam of the
sort ICs are packaged in. It's resistance changes with pressure.

Al

--
There's never enough time to do it right the first time.......