Does this ever happen with you that someone walks into your room and then does not close the door on their way out? This happens to me a lot as my mom keeps coming into my room to check on me and she always leaves the door open, and I get frustrated as I always have to get off my desk to close the door. I have a solution to this huge problem. An Automatic door closer system will consist of some motors and some strings and an app through which I can send signals to the system when to close the door.
I have attached a link below to a video of the prototype I made in my room .
Automatic door closer prototype
If you have gone through the video in the link you must have noticed 4 things
1. A bottle
2. A hook attached on the frame of the door
3. Red colored string
4. A nail attached to the door
A huge con of this prototype is that the bottle makes the door very heavy and it becomes very difficult to open it. And remember that this is just a rough mechanical prototype, from all the knowledge I gain from this course I'll be able to convert it into a fully automatic and technical system.
I'll attach a motor to the frame of the door where the hook was placed in the video. I'll connect a light but strong string to the motor whose another end will be connected to the door and viola I get the same function product in my video but with the weight problem solved.