With Instructables you can share what you make with the world, and tap into an ever-growing community of creative experts.
Tell us about yourself!
How can i program write a program to allow only a set no of visitors in the room if the number is exceeded a warning is displayed?
Arduino-DIY Laser / IR person counter
Join 2 million + to receive instant DIY inspiration in your inbox.
Download our apps!
© 2016 Autodesk, Inc.