three axis accelerometer

Laser Distance Sensor

Rotary Encoder

Infrared Receiver

joystick module

small lever microswitch

photoresistor

Potentiometer

infrared proximity sensor, QRD1114

Pushbutton

slide switch

tactile button switch

Temperature and Humidity Sensor

thermistor

tilt switch

Ultrasonic Ranger

Passive Infrared Sensor

soil moisture sensor