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The post discuses two simple motion detector circuits using op amp and transistor. We also discuss the pinout details of the standard passive infrared (PIR) sensor RE200B. The first circuit uses an op amp, while the second design works with a single transistor and relay for detecting the IR radiation from a moving human body … Read more2 Simple Motion Detector Circuits using PIR
We all use remote control handsets for controlling various household devices such as TV, AC, Music systems, curtains etc, and sometimes we seem to have problems with these devices, or even a newly purchased remote controller unit occasionally seem to malfunction, and identifying the issue becomes quite difficult for us. This simple 2 transistor circuit … Read moreRemote Control Tester Circuit
In this post we are going to explore the datasheet of PIR or Pyroelectric Infrared Radial Sensor HC-SR501. We will understand for what purpose PIR sensor is used? Its basic trigger operations, pin connection details, technical specifications and finally we will be looking at some real life applications. We will begin by understanding the actual … Read morePIR Sensor Datasheet, Pinout Specifications, Working
The post explains a simple circuit using Passive Infrared or PIR for making an automatic solar LED lamp which can be used for illuminating your home automatically at sunset, and only in the presence of a human member in the premise. By SS Kopparthy Introduction Here, in this article, a simple yet useful and improved version … Read morePIR Solar Home Lighting Circuit
In this post we will learn how to increase or extend the range of an ordinary infra red or IR remote control through a 433MHz RF remote control system. IR Range Extender Concept The idea of this circuit is to feed the IR data from an IR transmitter into the transmitter input of an RF … Read moreMake this IR Remote Control Range Extender Circuit
Three useful proximity sensor concepts are explained here, the first concept is based on an ordinary opamp LM358, the second one using IC LM567 which functions with a phase locked loop principle ensuring very accurate response for the detection. The third circuit works using the ubiquitous IC 555. Let’s learn each one with a step … Read more3 Simple Proximity Sensor Circuits