Accurate, Reliable Flow Tracking for Your Next Project
Essential Hardware for Microcontroller Liquid Metering and Smart Water Systems
The YF-S201 Water Flow Sensor is a compact, cost-effective solution designed to measure liquid volume and flow rates in real time. Featuring a standard 1/2-inch threaded valve body, this sensor seamlessly installs into standard piping. Inside, a durable plastic pinwheel rotor spins as water passes through, while an integrated Hall-effect sensor detects each rotation and outputs a clear digital pulse signal. Because pulse frequency directly correlates to fluid velocity, microcontrollers can quickly calculate flow rates from 1 to 30 liters per minute with impressive consistency.
Engineered for effortless integration with Arduino, ESP32, and Raspberry Pi platforms, the YF-S201 operates on a wide 5V to 18V DC power supply, making it exceptionally versatile for desktop prototypes and field deployments alike. It is ideal for DIY smart irrigation, automated beverage dispensers, liquid tank monitoring, and solar water heating setups. Built to handle working pressures up to 1.75 MPa and fluid temperatures up to 80°C, this low-power sensor is a dependable workhorse for modern DIY electronics, home automation, and light industrial applications.
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