PING))) documentation v1.5

Dimensions

Communication Protocol

The PING))) sensor detects objects by emitting a short ultrasonic burst and then "listening" for the echo.

Under control of a host microcontroller (trigger pulse), the sensor emits a short 40 kHz (ultrasonic) burst.

This burst travels through the air, hits an object and then bounces back to the sensor. The PING)))

sensor provides an output pulse to the host that will terminate when the echo is detected, hence the

width of this pulse corresponds to the distance to the target.

Host Device Input Trigger Pulse t

OUT

2 µs (min), 5 µs typical

Echo Holdoff t

HOLDOFF

750 µs

Burst Frequency t

BURST

200 µs @ 40 kHz

Echo Return Pulse Minimum t

IN-MIN

115 µs

Echo Return Pulse Maximum t

IN-MAX

18.5 ms

PING)))

Sensor

Delay before next measurement 200 µs