Ultrasonic ranger Grove


who can explain to me the ultrasonic operation Ranger Grove at the level of delays, waves and signals?
This is for an explanation in physics class.
A big thank you to you.

For reference, you can see the timing diagrams of HCSR04: https://cdn.sparkfun.com/datasheets/Sensors/Proximity/HCSR04.pdf
The working principle is same. It’s just that HCSR04 has two pins for echo and trigger. In Grove ultrasonic sensor signal pin alone does the function of both echo and trigger.

it is used to find distance between the sensor and its objects and when its start work firstly it emit the sound wave at specific ultrasonic frequency. after specific period of time it get a sound wave reflected by object

hopefully my opinion will be useful.
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