Hello friends, I hope you all are doing great. Today, I am going to share the new YF-S201 Water Flow Sensor Library for Proteus V1.0 . The YF-S201 is the black plastic water flow sensor with a half-inch thread on both ends that shows up in so many Arduino projects: water meters for a tank or a garden, leak alarms, coffee machines, aquarium pumps and cooling loops. Water turns a small impeller inside it, and every turn gives a few pulses on its yellow wire - more water, faster pulses. Count them with an Arduino and you have a flow meter . Behind the part sits our own model , written from the YF-S201 datasheet. It gives the square wave the real sensor gives, 7.5 pulses a second for every litre per minute , with every edge at its exact time, so your interrupt code sees what it would see on a ...