This is an Arduino ... ultrasonic transmitters, receiver and control circuit. You only need to supply a short pulse to the trigger input to start the ranging, and then the module will send out burst ...

[Klaus] wanted some sort of aid for parking his car, and after running across a $4 ultrasonic ... the voice is set up to speak the distance from an object to the sensor from 10 cm to 1 m in ...

In his write-up ... 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 ...