Sensors Projects

Build an environmental weather station with the Raspberry Pi Pico W. Acquire temperature and humidity metrics from a digital DHT22 sensor, render a real-time 128x64 dashboard on an SSD1306 OLED display, and stream JSON telemetry.

Build an optical light meter with the Raspberry Pi Pico. Measure real-time ambient illumination using an LDR analog sensor on the RP2040 ADC and trigger audio-visual warnings when sudden darkness occurs.

Construct a multi-zone environmental safety telemetry hub using the Arduino Mega 2560. Reads temperature, humidity, and ambient light across multiple rooms and displays real-time safety metrics on a large 20x4 I2C LCD screen.

Build a compact perimeter intruder alarm and entrance chime with the Arduino Nano V3. Interface an HC-SR501 PIR motion sensor, an SPDT arming slide switch, and a dual-tone piezo sounder with serial status logging.

Build an intelligent, adaptive ambient night light using the compact Arduino Nano V3. Read continuous light intensity from a photoresistor (LDR) on analog pin A0 and modulate an RGB LED with warm amber PWM fading as dusk falls.

Measure distance in real time with an HC-SR04 ultrasonic sensor and an ESP32-C3 microcontroller. Trigger a buzzer and warning LED when obstacles get closer than 15 cm, while plotting live distance curves on the Serial Plotter.

Read ambient room temperature with an NTC thermistor and display live Celsius and Fahrenheit readings on a 16x2 LCD screen using an ESP32-C3 microcontroller.

Build a compact temperature monitor using an ATtiny85 microcontroller, an NTC temperature sensor, an LED, and a buzzer. When the temperature gets too hot, the LED flashes and the buzzer sounds an alert.

Connect a light sensor and a red LED to an ATtiny85. When the room goes dark, the LED slowly fades on like a breathing glow. When light returns, it quietly fades off. This project shows how to read a sensor and smoothly control brightness — all from an 8-pin chip.