How to Build a Motion Sensor Circuit
How to Build a Motion Sensor Circuit Motion sensor circuits are fascinating and widely used in security systems, automatic lighting, and smart devices. Creating one yourself can be a fun and rewarding DIY electronics project. This guide will walk you through the basics of a motion sensor circuit, the components needed, and the step-by-step process to build it. What Is a Motion Sensor Circuit? A motion sensor circuit detects movement within its range and triggers an action, such as turning on a light or sounding an alarm. The most commonly used sensor for such circuits is the PIR (Passive Infrared) sensor, which detects changes in infrared radiation caused by moving objects. Components Needed Here’s a list of components to get started: PIR Sensor : The core component to detect motion. Microcontroller or Timer IC (e.g., Arduino or 555 Timer) : Processes the sensor signal. LED or Buzzer : To indicate motion detection. Resistors and Capacitors : For circuit stability. Power Supply : ...