I live out here in the San Francisco bay area where it doesn't rain in the summer. So I want to make an automated plant watering device.
I already have a water pump intended for solar water heating that pumps from a 2 gallon jug to 3 pots on the railing. I also split the flow from 1 tube into 3, but this isn't working well because the flow becomes uneven between the 3.
I could build 2 more independent pumps, but that would get too complicated if I wanted to water > 3 plants.
So, is there a commodity valve that can switch the flow between 3 or more destinations and can be controlled electronically?
The seal doesn't have to withstand high pressures since the pump I use can barely push water up 3 feet.