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Enclosed are the ultrasonic sensor, a temperature sensor and an LED indicating the power status. On the other side of the CAT5 cable can be found an Arduino compatible board with an XBee shield ...
Inside [Klaus]’ device is an Arduino Uno, an HC-SR04 ultrasonic distance sensor, and an Adafruit Wave Shield. Originally, this parking/distance sensor used a small TFT to display the distance to ...
"The sensor sends out ultrasonic ... yellow LED turns on and if it's really close, the red lights go on. A buzzer too goes off as a warning. There's also an Arduino board, motor shield, breadboard ...