> If a cheap looking low priced scale can achieve the above performance 10+
> years ago a few hours spent in a few Kitchenware departments may reveal a
> modern equivalent. (You'll need a source of warm air for likely candidate=
s).

They will have been made accurate as they are used for trade, and so will b=
e tested periodically by Weights and Measures (not sure which govt. departm=
ent they come under in NZ these days), hence the accuracy and linearity. Be=
cause they are used for trade purposes they have to be accurate to ensure t=
he customer isn't short changed.

Kitchen scales are a case of 'near enough is good enough' as recipes don't =
require high accuracy measurement of ingredients, so their accuracy and lin=
earity doesn't need to be so good.

However for the purposes of a force joystick kitchen scale sensors should b=
e good enough. I would have thought they would be repeatable enough when us=
ed within the sensors range that they would serve the purpose.

However for the original joystick with too much travel, is there any possib=
ility of lengthening the distance between the hinge point of the joystick, =
and the point on the joystick that applies pressure to the sensor? Without =
knowing how these things measure the force I am just pondering the 'how to'=
 possibilities.





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