We’re sorry, your browser appears to be outdated.
To see the content of this webpage correctly, please update to the latest version or install a new browser for free, such as Avast Secure Browser or Google Chrome.
Skip to main content

: When water passes through the sensor, it pushes an internal turbine wheel (rotor). The Magnet : This rotor has a small magnet embedded in it.

Since Proteus lacks a native YF-S201 model, users typically download the "Water Sensor Library" (often provided by sites like The Engineering Projects Pulse Simulation:

Use the simulation for firmware development and basic system validation. Always test the final product with real water flow and a physical YF-S201.

This article serves as a complete resource. We will explore why the library is missing, how to simulate the YF-S201 without a perfect model, and—for advanced users—how to create your own custom Proteus library for the sensor.

Consider using (online), Tinkercad (limited), or Proteus’s own Flow Sensor if a different model exists (e.g., FS300A). Some users adapt the YF‑S401 library (low-flow version) with scaling.

If you have searched for "YF-S201 Proteus Library" on Google, GitHub, or Labcenter’s official forums, you have likely come up empty-handed. Out of the box, Proteus (version 8 and 9) does not include a native simulation model for flow sensors.