Help please with rain detection for remote observatory operations?

[michaelmorris]

There is also a UK supply here:

http://www.brocott.c...odule-m152.html

Or Amazon if you wish:

http://www.amazon.co...r/dp/B000NI2QJC

Thanks. I've ordered from the Amazon link (£3 cheaper).

[russellhq]

You could maybe swap the bulb in the previous wiring picture for one of these:

http://www.ebay.co.u...2508#vi-content

I'm sure that would make you get off your seat!!

[Gina]

You could maybe swap the bulb in the previous wiring picture for one of these:

http://www.ebay.co.u...2508#vi-content

I'm sure that would make you get off your seat!!

YIKES!!

[upahill]

Would alert the neighbours too! Would need to be quick at switching it off again.

[Gina]

Make a great intruder alarm and deterrant

[Alfven]

Have you considered using a piezo speaker/sounder as a rain detection? If you have one of those annoying birthday cards that play a tune when you open it then you have the basis of your detector. The circular disc that acts as a speaker vibrates when subject to a voltage. But they also work in reverse, if subject to a vibration they generate a voltage or signal. If the disc is left in a suitable location were it is likely to be struck by a rain drop [you could wire a number of them in parallel to cover a greater area] the pressure of the rain drop will cause a voltage/signal to be generated which is relayed to whatever interface you happen to be using.

[yesyes]

now that is an interesting idea!