Robotjoy HC-SR04 Ultrasonic Sensor Module DIY Projects
IO port trigger range to at least 10us high level signal Automatically send eight 40KHz square wave, and auto detect a signal return Return signal sent with high output through IO port ECHO high duration ultrasonic from transmitter to time of return 2cm - 400cm non-contact distance sensing capabilities
The HC-SR04 sensor has the basic functionality of an ultrasonic module, and is suitable for Arduino or other microcontroller type projects. The board comes with a pair of eyes, one eye transmits an ultrasonic wave which travels a certain distance until it hits an object or wall and bounces it back to the receiving eye.
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Robotjoy
{"Package Dimensions": "7.25 x 5 x 1 inches", "Item Weight": "0.8 ounces", "Date First Available": "April 9, 2013"}