Here, is a article for a Simple PIR Sensor Timer Circuit using Transistors. It is with low cost and easy to build and it works with 12V DC supply. When motion is detected the output stays ON for some time. After delay the output turns OFF automatically. Hence, this circuit is useful for lights, alarms […]
Sensors and Detectors
PIR Sensor Motion Alarm Circuit Transistor and Relay
Nowadays, security is very important that why homes and shops need protection. So to safeguard this motion sensor circuits are useful. PIR Sensor Motion Alarm Circuit Transistor and Relay is simple. It uses very few components and is with low cost and is also is easy to build. The circuit works using a PIR sensor […]
Simple Transistor Based Touch Switch Circuit
This article is about is a Simple Transistor Based Touch Switch Circuit. It works when finger touches the pad with no push button used. Human body gives small signal and circuit senses this signal. Two NPN transistors are used and one LED is used as output. Circuit works with only 3V supply which is very […]
Arduino Touch Sensor Relay Circuit
Want to control appliances by touch? then this circuit makes it possible. This Arduino Touch Sensor Relay Circuit uses Arduino and touch sensor. Arduino reads touch signal and relay works like toggle switch. Touch sensor is touched once and relay turns ON. If we touch again then relay turns OFF, each touch changes relay state. […]
Simple Infrared Fire Alarm Circuit
This is Simple Infrared Fire Alarm Circuit for beginners. It use infrared receiver sensor to detect fire heat or flame light. When fire come close sensor output changes. Then LED glow and buzzer makes sound. This circuit is cheap and easy to make. It also use only few parts like BC547 transistor, LED, buzzer, IR […]
Simple Sound Sensor Circuit with Arduino
This project show how to use sound sensor with Arduino. Sound sensor detect clap or loud voice. When sound come, Arduino turn ON LED and buzzer. This project for Simple Sound Sensor Circuit with Arduino help beginner understand sensor working. Arduino Coding: Code Explanation: Circuit Working: Parts List: Item Quantity Resistors 220Ω 1/4 watt 1 […]