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Is there anything worse in life than having to get up in the morning and drag your curtains open. This device, based on Mindstorms EV3 and Alexa, will let you do all that work for you by voice. The device, attaches right to your curtain rod and automatically moves them open or closed. The curtain opening robot uses a wheel on the top of it that drags itself back and forth automatically. It is an affordable retrofit solution to automate your existing curtains. It is easy to build and install.
It consists of two parts : a fixed one : the EV3 brick attached to the end of the rod and a mobile part : a dual motors with a spinning wheel that drags along the rod.
The issue I faced to build this project is that the cables that come with Mindstorms EV3 are too short. Thus, I've used a regular RJ12 cable, removed the latch (center position) and 3d printed a new latch that attach to the cable socket (right side).
The 3d STL file is available on Thingverse : https://www.thingiverse.com/thing:3145299
There are many ways to attach the EV3 brick to the rod, I've chosen a structure with (a double inverted U)
The mobile part consists of two large motors attached to a Tire.
Each motor has two arms to prevent the wheel from being blocked by the curtains.
How to use:
First, start Alexa Mindstorms skill: "Alexa, open Mindstorms"Then you can issue a command.
Open or close / left or right curtain / for xx centimeters