Propagation Mist Timer

I call it The Frankentimer.

I put this mist timer together because it's inexpensive to build and I can easily replace individual components for around $20.  I can control the duration and the pause each from 1 second to 60 hours, and I can control the hours I want to mist during the day.  Here are the parts I used.

Basically I have an individual surge protector that I plugged a simple 24hr timer into that will allow me to set the misting system on while the sun is up.  Into the 24hr timer I have a 12Vdc power supply  for the timing board and a 24VAC transformer to run the solenoid controlled water valve.  One line, doesn't matter which, of the 24VAC runs through the relay on the timing board on its way to the valve.

The timing board is a VM188 and is controlled with a couple of jumpers to select seconds/minutes/hours and a dial to control 1-60 for the selected time setting.  It's not pretty but it works.

And now some Amazon affiliate links. If you do copy this design, please click through the links below to purchase your parts.
A short list of supplies used:

VELLEMAN MK188 1S - 60H PULSE-PAUSE TIMER KIT
Elk TRG2440 24VAC, 40 VA AC Transformer with PTC Fuse
Intermatic TN311C 120 Volt Heavy Duty Grounded Timer
Belkin SurgeCube Surge Protector with 1 Outlet
Coleman Cable 09638 18/4 Solid Underground Sprinkler System Wire, 18-Gauge 4-Conductor 50-Feet