Coffea ramosa wrote:

: : What's a water computer doing?
:
: Turning the water of and off.

: Sounds simple..

: I'd like to water my greenhouse using my rainwater barrel. But for that I
: picture I need this setup:

: A water pump connected to the barrel
: A water computer connected to the pump
: An automatic water system connected to the water computer.

: But how does the pump and water computer work together? The pump just wanna
: go all the time? or maybe I can get them combined.

If you have a pump, best to use a mains timer - not a water computer.
Search for "mains timer" on ebay.

If you use a rainwater barrel, better use a filter - or drippers with big
holes in - or they'll get all gunked up.
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|im |yler http://timtyler.org/