This project explains about a complete Automatic PIR Motion Sensor Light Circuit, it is very useful for home and outdoor lighting, because the circuit uses a PIR sensor. Whenever the PIR sensor detects motion, it turns the light ON automatically and after a preset delay, it turns the light OFF, saving power and reducing human […]
Sensors and Detectors
Simple PIR Sensor Timer Circuit using Transistors
This article presents a simple PIR sensor timer circuit using transistors; the circuit costs little, is easy to build, and operates from a 12 V DC power supply. When the PIR sensor detects motion, the output stays ON for a preset time and then turns OFF automatically after the delay, hence, this feature makes the […]
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. The PIR Sensor Motion Alarm Circuit with Transistor and Relay is simple because it uses only a few components, costs very little, and is easy to build. The circuit works using a PIR sensor […]
Simple Transistor Based Touch Switch Circuit
This article is about 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. The circuit uses two NPN transistors and an LED as the output, also it operates with only a 3V supply, making it […]
Arduino Touch Sensor Relay Circuit
Want to control appliances by touch? then this circuit makes it possible, as this Arduino Touch Sensor Relay Circuit uses Arduino and touch sensor. The Arduino reads the touch signal and uses the relay as a toggle switch. When we touch the sensor once, the relay turns ON and when we touch the sensor again, […]
Simple Infrared Fire Alarm Circuit
This is Simple Infrared Fire Alarm Circuit for beginners, as it use infrared receiver sensor to detect fire heat or flame light. When fire come close sensor output changes and then LED glow and buzzer makes sound; also this circuit is cheap and easy to make. Furthermore, it also uses only few parts like BC547 […]