Sensors

Industrial sensors are designed for reliability, long cable runs and operation in harsh environments. Unlike typical hobby sensors, they use standardized output signals such as NPN, PNP, 0-10V and 4-20mA. This article explains the most common industrial sensor interfaces and how they can be used with Arduino, ESP32 and PLC systems. Why Industrial Sensors Are […]

Sensors use different electrical and communication interfaces to transmit data to a microcontroller. Understanding these interfaces is essential for reliable integration and system design. This article explains the most common sensor interfaces used in Arduino, ESP32 and embedded systems. Analog Sensors Output: continuous voltage signal Requires ADC (Analog-to-Digital Converter) Examples: Thermistors Analog gas sensors Capacitive

Incorrect power supply and signal levels are one of the most common causes of sensor problems. Even high-quality sensors can behave unpredictably or get damaged if they are powered incorrectly. This article explains how to power sensors properly, how to handle different voltage levels and when level shifting is required. 3.3V vs 5V Sensors Most

Understanding sensor specifications is critical for obtaining meaningful measurements. Terms like accuracy, resolution and calibration are often misunderstood, leading to incorrect expectations and poor system design. This article explains the most important measurement concepts and how they affect real-world sensor performance. Accuracy Accuracy describes how close a measured value is to the true value. Specified

Even simple sensor setups can fail or produce unreliable results. Many issues are not caused by defective sensors, but by wiring mistakes, power problems or incorrect assumptions about how sensors work. This article covers the most common sensor problems and how to troubleshoot them effectively. No Data or Sensor Not Detected Possible causes: Incorrect wiring

Sensors are the foundation of nearly every modern electronics project. They allow microcontrollers to interact with the physical world by measuring temperature, light, motion, pressure, distance and many other environmental conditions. This article provides a practical overview of sensor types, how they work, and how to choose the right sensor for your project. What is

Choosing the right sensor can be challenging, especially with the large number of available options. Many sensors appear similar but behave very differently in real-world applications. This guide helps you select the right sensor based on your requirements, environment and system design. Start with the Measurement Goal The first and most important question is: What

Temperature measurement is one of the most common tasks in electronics projects. From simple room monitoring to industrial control systems, choosing the right temperature sensor has a direct impact on accuracy, reliability and ease of use. This article compares the most widely used temperature sensors in Arduino-compatible projects, including DS18B20, DHT series, AHT series and

Many sensors operate at 3.3V logic levels, while microcontrollers and legacy systems may use 5V. Connecting these directly can lead to unreliable communication or even permanent damage. This article explains when level shifting is required, how it works, and which solutions are reliable for sensor applications. Why Level Shifting Is Important Different devices often use

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,