Ultrasonic sensor help needed

[DonRotolo]

Originally Posted by jhellr13

We do probably have a DMM lying around. How would i go about testing the sensor?

Verify that there is +5 volts on the +5 pin, with the black DMM lead on the GND pin. If not, check both. Verify correct polarity at the same time.

If yes, then put something about feet from the sensor - the ceiling makes a nice target if you're working on a table. The voltage at tha AN pin, again with the black DMM lead on the GND pin, should be about 0.6 volts - more precisely, it should be 0.01 volt per inch. 60" = 0.6 V

If all that is fine, the sensor is working properly.