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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...

Introduction Are you tired of manually logging data from your ESP32? Would you like to automate the process? Well, the good news is that it’s very simple. In this article, we will cover a comprehensive, step-by-step process on how to send data from either an ESP32 or ESP8266 to Google Sheets. Esp32 is a powerful microcontroller capable of connecting to WiFi, different devices, and sensors. To effectively collect data from other devices and manage it, you need an intelligent system that can store a signifi...

Introduction Welcome to the world of environmental sensing! Nowadays, with all the climate changes and pollution concerns, understanding and monitoring our surroundings have become super important. That's why we’re going to talk about the BME680 sensor!The BME680 sensor can measure temperature, humidity, pressure, and even VOCs (volatile organic compounds). It gives us valuable data to improve our quality of life. But knowing how to use it effectively can be very helpful. In this tutorial, we'll cover...

Introduction Would you like to unlock the full potential of a sensor? Do you enjoy challenging your limits? Well, that’s exactly what the HR202L sensor offers! HR202L is a variable capacitor with a non-linear logarithmic behavior, whose values depend highly on the ambient temperature. Whether you're new to Arduino or have been using it for a while, this guide will provide you with everything you need to get started with the HR202L sensor. By following clear instructio...

Introduction If you are interested in sensors, you are probably familiar with proximity detection sensors. There are various sensors available for proximity detection; each with its own capabilities and limitations. One method is to use the infrared transceivers. These sensors measure the time it takes for an infrared beam to travel back and forth and calculate the distance between the sensor and the target surface.In this tutorial, we’ll introduce the TMD27713 distance detection sensor. Whether you...