🚀 go-pugleaf

One responce I rcved was interesting due to it's simplicity:


        Well Mark I see you are still building your terrarium and asking
questions like you predicted.  I have not got around to the Possion Arrow
Frogs
yet since I am building new tanks for geckos and pink tongue skinks.  

Anyway to your question which was posted to sci.electronics.  A very
simple
way to keep the humidty high, although not truely measuring the humidty
is to place a small sensor comprising of two electrodes in the tank.  The 
application I saw this in was a orchid house.  Anyway when the
temperature in
the house causes evaporation of the water off the surface of the sensor
the 
misters come on, wet the surface, stop and then wait for the surface to
dry 
again.  This providing a simple solution.  All it requires is a simple
switching
circuit.

This is the solution I am opting for.

                Cheers
                        John Haigh