"Sparks" wrote in message
.. .
I am in the middle of installing a whole garden irrigation system.

I want to build a controller for this, but need some kind of moisture
sensor
(digital if possible, to flag when the soil needs watering)

Any ideas on where I can either buy some, or plans on building them?

Sparks...

Hi Sparks,

Gardena - http://www.gardena.co.uk/ (select Product catalogueIrrigation
SystemsWatering Controls) produce a soil moisture sensor as well as a rain
sensor. Both of these plug into their water timers.

HTH

Nick
http://www.ukgardening.co.uk