Posted in OpenSprinkler, Sprinkler Projects on Aug 30th, 2026
Four ways to drive 24VAC sprinkler solenoids from USB-C, with theory, circuit designs, oscilloscope measurements, and practical tradeoffs.
Posted in ESP8266, MakeBusiness, OpenSprinkler on Oct 15th, 2025
Back in July, we debuted the AC-powered OpenSprinkler v3.4, featuring a new, redesigned enclosure and several hardware improvements (read here). Building on that, today I’m thrilled to unveil the upcoming DC-powered OpenSprinkler v3.4 — the very first OpenSprinkler powered by USB-C! Check out some sneak-peek photos below: This model shares the same sleek, low-profile enclosure […]
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