This is a 3D printable model of a windmill moved by solar energy; the propellers will start moving automatically at direct sunlight.The solar panel is directly connected to the motor that moves the propellers so only the motor and the solar panel are needed, no battery or converters are necessary for the assembly.The design is easy to print, suitable for beginners at 3d printing.

Total size is 290x221x117mm (height,width,length).Assembly takes about 15 minutes.

Material needed for building the windmill in addition to the printed parts:

• Electric motor with reduction to 60rpm (I used this one: https://www.aliexpress.com/item/33059907659.html)
• Solar panel (70x90x3mm)
• Cables and soldering iron

3D printing settings:

• Infill: 15%
• Layer height: 0,16 - 0,28
• Supports: yes, < 60º