It can measure the distance to an object.
It can detect that something has been placed or that you are approaching.
OLYMPUS DIGITAL CAMERA
Parts library
https://obniz.com/ja/sdk/parts/HC-SR04/README.md
It can measure the distance to an object.
It can detect that something has been placed or that you are approaching.
OLYMPUS DIGITAL CAMERA
https://obniz.com/ja/sdk/parts/HC-SR04/README.md