An interesting way to increase sensitivity and reduce the noise of the ADXL335 analog accelerometer.

It can detect metal coin at 15cm +, and bigger metal objects at 50cm and more. Also capable of discriminating between ferrous and nonferrous

A cheap DIY air quality monitoring device.

Transmit temperature readings via two nRF24L01 transceiver modules using an Arduino Nano and a TTGO T-Display and upload to Thingspeak.

Harsh Weather Monitoring Using Arduino MKR 1300 and Blynk

How to make a sensitive homemade lightning detector based on cheap AM receiver IC TA7642 and Arduino Nano.

An Arduino Uno with DHT11 sensor module, three LEDs and a Piezo speaker.

An air monitor that can measure CO, CO2, H2, CH4, NH3, Alcohol, Bangene, Acetone, Hexane, Toluene, Smoke and Flammable gas concentration.

DIY Arduino air quality monitor which can measure surrounding air quality also shows temperature and humidity in your room.

Learn to build a pocket weather station that displays temperature and humidity using Arduino Nano!

Wireless programmable via Wi-Fi room thermostat with air quality monitor and other useful features.

A pair of talking smart glass, intended to help the visually impaired.

Easy to build, but comparable with professional seismometers, homemade Arduino seismometer.

Ultrasonic Levitation! It's real life Anti-Gravity!

Pulse induction Metal Detector. It can detect a metal coin at a distance of 15 cm and a larger metal object at a distance of 40 cm and more.

Build your own IoT-based water quality monitoring system WITHOUT any TDS/pH meter !!

An easy to build simple weather station that connects to your smartphone via WiFi and Blynk.

A compact, versatile, and extremely accurate tool for assessing ALL types of environmental damage

Sunglasses that serve an even more useful purpose than protecting the eyes of the blind. They can help them detect objects in front of them.

LIDAR stands for Light Detection and Ranging. LIDAR is used for many applications including 3D scanning, mapping, laser guidance, etc.

A simple project to make a GPS log station with data speed, max speed, distance trip and altitude. all data are write on SD card

How I built an Arduino energy monitor and data logger to collect energy data for different loads and plotted that data using Excel.

A realtime motion activated camera trap leveraging AI at the edge and Sigfox.

A fun and simple project that uses TinyML to detect and respond to dog barks.