As the name suggests LDRs or Light Dependent Resistors are resistors that exhibit a wide range of resistance values depending on the intensity of light incident on its surface. The […]
Sensors and Detectors
These are devices that are designed to monitor or scan a specified region or a parameter and produce a warning indication as soon as an unfavorable situation or condition is detected.
These types of monitoring gadgets use specialized sensors to track a given set of parameters which continuously record the proceedings and quickly intimates the attached processor to trigger a warning alert to the user regarding the incident.
You will find various forms of sensors involved in many crucial electronic devices, the most common of these are PIR sensors, infrared sensors, microprocessors based data loggers, while other applications may involve weather monitoring sensors such as barometric sensors, pre-programmed DTHXX sensors etc.
The following posts provide a detailed explanation regarding many such electronic monitoring devices which can be easily built by any interested enthusiast to execute the checking of various complex sets of variables and to gather the important relevant information from the data.
MQ-135 is a gas sensor designed to sense or detect gaseous substance and generate a corresponding positive output voltage. In this post we will learn how to connect or wire […]
A PIR motion sensor alarm is a device which detects the infrared radiation from a moving human body and triggers an an audible alarm. The post discuses 4 simple motion […]
The post explains a simple sound to flashing lamp circuit which can be used for facilitating people with hearing loss, so that they are able to visualize a distant cell […]
An IR proximity sensor is a device which detects the presence of an object or a human when it is within a predetermined range from the sensor, through reflected infrared […]
In this post we are going to construct a circuit which can detect color and trigger respective assigned relays. This project is accomplished using TCS3200 color sensor and Arduino board. […]