It has been a hot hot summer for many parts of the US. The heat has been dangerous at times and making sure the livestock has the water they need is incredibly important. [Maddox] recently upgraded the automation on their water troughs which will help with the process. Sure, they still have to check on the animals, but this will ensure there’s plenty to drink in between those visits, and that a malfunction doesn’t waste precious water.
There has always been some level of automation here, but it relied on float valves which were frequently malfunctioning. This project seeks to get rid of the float value and use solenoid valves like those used in irrigation. These solenoids can run from a 9V battery and offer quite a bit more reliability than the mechanical vales. There is still a float sensor which measures the water level, filling up the trough when needed.
An MSP430 Launchpad was used for the prototype, from which a PCB was designed. Since this needs to be weather-proof a water tight enclosure was sourced. The company that makes the enclosure also provides DXF templates which [Maddox] used to establish the size and outline of the PCB.