This simple Arduino hack to automate doors looks pretty rad!
This is a video of Sieuwe Elfernik demonstrating the self-opening door he built with an Arduino microcontroller. As with every self-opening doors, this one too opens by itself when someone comes near it. The best part, however, is that you can make one of these for a couple of ten bucks.
When someone comes within 50 cm of an ultrasonic sensor attached to the door, the Arduino uses an H-bridge relay to power a windshield wiper motor, which opens and closes it via a linkage setup. Another sensor is implemented on the opposite side of the door, allowing hands-free travel both ways!
The main components are an Arduino UNO microcontroller, a breadboard, an electric motor, two ultrasonic sensors, and a couple of connecting wires. If you’re an Arduino enthusiast looking for something to do this weekend, this could be a great project to take over. Also, I have a strong feeling this would add a great level of convenience and functionality to your DIY garage especially when you’re holding something bulky and can’t reach the door handle.
Hit the source link below to know more about the system complete with the code.
Source: Instructables, Arduino Blog
