Ultrasonic occupancy counter with Arduino and HC-SR04

Posted Leave a commentPosted in COVID19, Project Clean Access, Project Clean Access Designs, Project Clean Access News

Limiting the number of people inside a shop or venue can help to maintain social distancing. This simple Arduino project can be placed in the doorway of a shop or other venue to count the number of people inside. The parts list, instructions, and code for building your own counter are available here: Instructables We […]