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Humidity is the measure of water vapour present in the air. The level of humidity in air affects various physical, chemical and biological processes.  In industrial applications, humidity can affect the business cost of the products, health and safety of the employees. So, in  semiconductor  industries and control system industries measurement of humidity is very important.  Humidity measurement determines the amount of moisture present in the gas that can be a mixture of water vapour, nitrogen, argon or pure gas etc…  Humidity sensors are of two types based on their measurement units.  They are a relative humidity sensor and Absolute humidity sensor. DHT11 is a digital temperature and humidity sensor. What is a DHT11 Sensor? DHT11 is a low-cost digital sensor for sensing temperature and humidity.  This sensor can be easily interfaced with any micro-controller such as Arduino, Raspberry Pi etc… to measure humidity and temperature instantaneously. For m...

Information about Ultrasonic sensor Hi Friends! I hope you are doing well. Welcome you Know To Robo. Today, I’ll discuss the basic  Introduction to HC-SR04 Ultrasonic Sensor . It is an ultrasonic sensor, also known as an ultrasonic transducer that is based on a transmitter and receiver and mainly used to determine the distance from the target object. The amount of time it takes to send and receive waves will determine how far the object is placed from the sensor. It mainly depends on the sound waves working on “non-contact” technology. The required distance of the target object is measured without any damage, giving you accurate and precise details. This sensor comes with a range between 2cm to 400cm and is used in a wide range of applications including speed and direction measurement, wireless charging, humidifiers, medical ultrasonography, sonar, burglar alarms, and non-destructive testing. In this post, I’ll try to cover basic details related to HC-S...

Information about LDR Sensor Check my  video. How to make light sensor using LDR sensor :                                                                                           Circuit Diagram of Darknes sensor                                                                Defination of LDR Sensor              A Photoresistor is an active component that decreases resistance with respect to receving luminosity on the components sensitive surface .The resistance of a photoresistor decreases with incresase in incident light intensity; in other words...