I have instructions to one of those "German Barometer" weatherStations.
suggests using Catgut strings as the moisture detector to swing the Guy/girl
depending on the weather. Any alternatives? Most places don't sell Catgut
Violin strings singly or at a cheap price where you actually want to spend
the money and then rip the sting apart.
Ideas? Alternative patterns?
On Mon, 4 Aug 2003 19:58:29 -0400, "Young Carpenter"
Catgut isn't the best for this. Horse tail hairs are much better.
If you can find a horse, then it's not hard to scrounge a few tail
hairs. Ask the owner though, not the horse, as they're less likely to
Natural hair tends to work well, regardless of the 'critter' it comes from.
For a long time, Honeywell used _human_ hair in their 'humidistat' line
of humidity-sensitive switches.
A musical instrument repair shop is also a viable source of horse tail hairs.
It's the 'traditional' material for bows for stringed instruments.
Human hair has been used in humidistats for ages.
Although, if memory serves me correctly, it's only
good in the 20-80% range. As it doesn't sound
like you're needing accuracy, it may work for your
app just fine.
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