Sensors

Gas and air quality sensors are widely used in indoor monitoring, smart home systems and environmental logging. However, many low-cost modules are often misunderstood and used incorrectly. This article explains how gas sensors work, what they can realistically measure, and the limitations of popular modules such as MQ series sensors and modern integrated sensors like […]

There are many different types of sensors available, each designed for specific tasks. This quick overview helps you understand the most common sensor types and when to use them. Main Sensor Categories Environmental sensors Motion and position sensors Distance sensors Light and color sensors Electrical measurement sensors Industrial sensors Quick Comparison Table Sensor Type Measures

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