3 ms·
Bear in mind I already had irrigation system with 24v valves in place. The <$20 is the adding the ESP32 , 8 switch relay rail, plus the plexiglass, standoffs,
by gedy 4y ago
Bear in mind I already had irrigation system with 24v valves in place. The <$20 is the adding the ESP32 , 8 switch relay rail, plus the plexiglass, standoffs, and USB charger.
- moffkalast 4y agoAh alright that's more believable, though still quite a bargain.
- cptskippy 4y agoThe thing you have to understand is that controlling an irrigation system is easy, the valves work just like light switches but on lower voltage. The cost of an irrigation system is making it user friendly for a customer. Example: https://www.amazon.com/Hunter-Sprinkler-XC400-4-Station-Controller/dp/B00FYRXFPG https://www.amazon.com/Hunter-Sprinkler-XC400-4-Station-Cont... Like the OP's solution, it is a microcontroller hooked up to a relay array, but it also has: * AC/DC Transformer * Real-Time-Clock * Battery backup * User Interface * Secure, weather proof housing * Printed Instructions And it costs less than $90. They're making a profit on them, so the BOM is probably closer to $20-30. The solution is completely plug-n-play compared to building from scratch, setting up a home automation system, and programming a microcontroller.