This is a simple to use light sensor that outputs an analog value from 0 to 5V. With exposure to daylight, this sensor will output 5V.
Detecting temperature changes has never been easier. The MCP9700 is a small thermistor type temperature sensor.
The SRF01 Ultrasonic Range Finder is the latest product from Devantech. It employs Devantech's 2nd generation AutoTune technology which allows ranging all the way down to zero on a single transducer sonar.
The Devantech SRF05 is a solid, 2-element ultrasonic ranger featuring great range, and selectable 1 or 2 I/O interface
The Devantech SRF08 is the advanced model of Ultrasonic distance rangers available, with excellent width-of-field detection, I2C interface, and light-intensity sensor!
The MaxSonar-EZ0 is a very tight-packaged, high-sensitivity single-element sonar module. Much like the very popular EZ1 module, the EZ0 offers higher sensitivity and slightly different coverage pattern
The MaxSonar-EZ1 Ultrasonic Range Finder is a tiny, easy-to-use ultrasonic ranging system that can be easily interface to any microcontroller.
The Parallax PING sensor is cool, but it's more useful when mounted on a servo so it can scan the environment.
The PING))) Ultrasonic Range Finder is a simple to use ultrasonic ranging system that can be easily interface to any microcontroller.