Sensors

Humidity measurement is essential in many electronics projects, including weather stations, indoor climate monitoring, greenhouse control and industrial applications. While many temperature sensors also provide humidity readings, not all sensors deliver the same level of accuracy and stability. This article compares the most common humidity sensor families used in Arduino and ESP32 projects, including DHT, […]

I2C is one of the most popular interfaces for sensors because it allows multiple devices to share just two wires. However, real-world projects quickly run into limitations such as address conflicts, bus instability and wiring constraints. This article explains how to reliably use multiple I2C sensors in one system and how to solve common problems.

Pressure and environmental sensors are widely used in weather stations, altitude measurement, indoor climate monitoring and IoT applications. Modern sensors combine multiple measurements such as temperature, pressure, humidity and even air quality in a single compact device. This article compares the most common environmental sensor families used in Arduino and ESP32 projects, including BMP180, BMP280,

Even high-quality sensors can produce inaccurate readings if they are not calibrated properly. Calibration aligns sensor output with real-world values and is essential for reliable measurements. This article explains practical calibration techniques for common sensor types used in Arduino and ESP32 projects. What Is Calibration? Calibration is the process of adjusting a sensor’s output to

Motion and orientation sensors are essential for detecting movement, tilt, rotation and direction. They are widely used in robotics, drones, navigation systems, gaming devices and IoT applications. This article explains the most important motion sensor types, including accelerometers, gyroscopes and magnetometers, and how they are commonly combined in modules like MPU-6050, MPU-6500 and QMC5883L. Accelerometers:

Many sensor problems appear only when cables become longer. What works perfectly on a breadboard can fail completely when sensors are installed a few meters away. This article explains why long cables cause issues and how to design reliable sensor connections over distance. Why Long Cables Cause Problems As cable length increases, several physical effects

Distance measurement is a common requirement in robotics, automation, obstacle detection and level sensing. There are several different technologies available, each with its own strengths and limitations. This article explains the most widely used distance sensor types, including ultrasonic sensors, time-of-flight (ToF) sensors and simple proximity sensors. How Distance Sensors Work Different sensors use different

One of the most fundamental decisions when selecting a sensor is whether to use an analog or a digital sensor. Both types have advantages and limitations, and choosing the wrong one can make a project unnecessarily complex or unreliable. This article explains the differences between analog and digital sensors and helps you decide which type

Detecting motion and presence is a key function in security systems, lighting control, automation and smart home applications. The most common technologies used for this purpose are PIR (Passive Infrared) sensors and microwave radar sensors. This article explains how these sensors work, their differences and when to use each type. PIR Sensors: Passive Infrared Detection

Two often misunderstood concepts in sensor systems are sampling rate and response time. Many projects fail not because of the sensor itself, but because these parameters are not considered properly. This article explains what these terms mean and how they affect real-world measurements. What Is Sampling Rate? The sampling rate defines how often a sensor