- Joined
- 22 Aug 2006
- Messages
- 7,049
- Reaction score
- 1,171
- Country

I did one of them for her indoors. Used a counter ticking over at about one count a minuteA Blue Peter day - turning empty washing up liquid bottles, and salvaged pieces of stainless steel pipe, into automatic flower pot waterers.
Soil probe to measure dampness, comparator to give wet or dry signal, latch that,, use that signal to send a spurt of water withaquarium pump on the next tick if it 's dry. Reset the latch, let the counter tiick on and repeat. It gives the water time to soak in, and the sensor doesn't get flooded because it's not measuruing when the waters going in. A lipstick-styple power bank (18650) power bank lasted ages
