The DHT11 humidity and temperature sensor makes it really easy to add humidity and temperature data to your DIY electronics projects. It’s perfect for remote weather stations, home environmental control systems, and farm or garden monitoring systems.
MPU6050 (Accelerometer+Gyroscope) Interfacing with Raspberry Pi
Heart Rate monitor using Raspberry Pi and Pulse sensor
The Sound Detector is a small board that combines a microphone and some processing circuitry.