Projects using this component
Motion Detector with Motion Sensor
Basic project that detects motion in the environment with PIR motion sensor and lights LEDs. Teaches digital sensor reading and motion detection logic.
Doorbell and Light with Motion Sensor
A project that lights the LED and plays the doorbell melody with a buzzer when the PIR sensor detects motion. Combines motion detection with sound and light notification.
ESP32 Motion Alarm System (PIR + Buzzer + LED + Telegram)
A smart security alarm system that activates the buzzer and LED when the PIR sensor detects motion, while simultaneously sending an instant notification to the owner via Telegram. It includes a 30-second cooldown to prevent false alarms. Suitable for home security, garage monitoring, warehouses, or workrooms. With ESP32-CAM, photo notifications can be added; with the classic ESP32 DevKit V1, text notifications are sent.
Automatic Lighting with the ESP32 PIR Motion Sensor
In this project, we will use the HC-SR501 PIR motion sensor to detect when someone enters the room and automatically turn on the LED. When motion is detected, the LED will stay on for a set period of time, and we will manage the timing using the `millis()` function and a counter, without needing to use `delay()`. This way, we’ll create a motion-sensor-based lighting system that doesn’t tie up the ESP32, allowing it to perform other tasks as well. In real-life applications, it can be used for sta
ESP32 Motion Detection Alarm
In this project, which uses an ESP32 and a PIR sensor, a buzzer sounds an audible alarm when motion is detected. It is a simple and low-cost security system application. (The images are for illustrative purposes only; please refer to the text for details.)
ESP32 Smart Lighting (PIR + LDR + Relay + OLED)
Turn your hallway, bathroom, or pantry into smart lighting with ESP32! Using a PIR motion sensor, LDR light sensor, and a relay module, we build the classic "light turns on when motion is detected in the dark" scenario — if the environment is already bright, motion does NOT trigger the light, saving energy during the day. The light stays on for 30 seconds; if motion continues, the timer resets and the light stays on longer. The SSD1306 OLED shows large-font status (ON / DAYTIME / WAITING), a cou