Relay Modules for Sprinkler System

Hi, I found this Google group through search. Just to let you know that I’ve recently developed a sprinkler / irrigation extension board for the BeagleBone Black and you can check out the details at http://beagle.opensprinkler.com. Technically, it uses triacs (AC transistors) to control sprinkler valves, and it has per-station bidirectional TVS for protection against transient voltages. Triacs are more compact than relays, and are very common for switching 24VAC solenoids.