Motion and Sound

5pcs HC-SR501 PIR Motion Sensor Module

Detect motion. Features include adjustable sensitivity and trigger delay

Collision Sensor

Simple switch that can detect collistions.

GPS Module

Arduino compatible GPS Module. Model GY-GPS6MV2. Attach this to someting you love and don't want to lose.

MPU-6050 3 Axis Accelerometer + 3 Axis Gyro

Mount this on something and detect how the object moves.

Mini PIR Motion Sensor Module

IR Detector Module Pyroelectric Infrared. Small: 10 * 23mm

RGB, Proximity and Gesture sensor

APDS-9930 RGB, proximity and gesture sensor.

Sound Sensor

Detect sound level with microphone. Both analog and digital output.

Triple Axis Accelerometer

Freescales MMA7361 three-axis analog MEMS accelerometer. 2.2V-3.6V

Triple Axis Compass Sensor

HMC5883L Triple Axis Compass Magnetometer Sensor. 3V-5V

Vibration sensor

Detect vibrations. Both analog and digital output.