Turn your phone into a door-opening remote - Engadget Simplified Chinese

Imagine, if you arrange a few bottles of water, some motors taken from a LEGO toy box, and a circuit board connected to an old computer and a mobile phone, what would it become? According to the experience of a netizen named Zerocool, you might be able to create a door opener controlled by a mobile phone.

The bottles of water serve as a balancer, while the motors are used to control the opening and closing of the door. This is a creative invention by the netizen named Zerocool. If we have the opportunity to develop this invention into a home application device, then perhaps we can also add the function of controlling the garage door, making it a multi-purpose remote control, and thus achieve the purpose of having one device...