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Introduction There are different sensors and methods for determining water depth, leakage, whether a container is empty or overflowing, and rain detection. One of the easiest and cheapest methods is to use a water level detection sensor that we will discuss in this tutorial.There are some other common names for this sensor: rain sensor, water level sensor, humidity sensor, and water leakage sensor. What you will learn Operating principles of a water level sensor and how to test itInterfacing th...

What is AM2301 Sensor? The AM2301 module is an internally-calibrated digital sensor that measures temperature and humidity. It can measure humidity from 0 to 99.9% with an accuracy of ±2% and temperatures from -40 to 80°C with an accuracy of ±3°C.This digital module uses a single-wire protocol for communication. So, apart from the power supply pins, it only needs one digital pin to communicate with the microcontroller. Using this protocol, we can transfer data through this line for a maximum distanc...

Introduction Thermometers and temperature sensors are widely used in many sectors. With advancements in science and technology, different methods and sensors have been developed to measure temperature. These sensors are used in various areas, including industry, homes, labs, and more. Many of these sensors and modules are designed for easy integration with microcontrollers and microprocessor systems. For example, these sensors are designed to work with microcontrollers like Arduino, considering factors such...

Introduction The KY-028 module contains a thermistor sensor that measures the ambient temperature. The resistance of the thermistor varies inversely with temperature. In addition, the analog and digital output pins provide the sensor's data. When the value measured by the sensor exceeds the threshold, the digital pin goes HIGH, lighting up the LED on the module. Tip You can adjust the digital output threshold using the blue potentiometer on the module. KY-028 Pi...