* Test how sensitive the ultrasonic sensor is to detect an object 22.11.2021

recipe

The size of the circle changes according to the value of the ultrasonic sensor.

code for Processing

code for Arduino

code reference : https://youtu.be/_SMQDfQG0fU

result

https://youtu.be/DAx0qvoNnYY

The ultrasonic sensor does not recognize the falling leaves.