Ultrasonic sensor
sensoricon
port: Grove: A1 (C16, C17)
interface: PWM
output values

2 - 350 cm

Further information: http://wiki.seeedstudio.com/Grove-Ultrasonic_Ranger
Order: https://www.conrad.de/de/p/seeed-studio-101020010-ultraschall-entfernungsmesser-1369546.html

The ultrasonic sensor can be used for the development of an autonomous vehicle among other things. At the Calliope office in Berlin, such a sensor is used to welcome visitors: the sensor monitors the door and as soon as someone moves through the entrance, the Calliope mini controls a small greeting card module which then plays a greeting message.

You can find sensor and actuator projects that have already been realised on the project page.