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motorized butterfly air valve/flap
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Fully insertable 102mm air valve driven by 28B YJ-48 stepper motor (FreeCAD).
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Model information
- Source
- Printables
- Category
- Other House Equipment
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
The valve fits standard DN 110 tubes. (They have a diameter of 110m on the outside and aprox. 103-105mm on the inside).
The 28 BYJ-58 stepper motor is a cheap geared stepper motor that can easily be controlled by a arduino or raspberry. The high gear-ratio of the motor results in rather low speed which is very suitable for this application. There are plenty of tutorials for that motor on the internet.
Opposing the motor there is a printable bearing. As rollers it uses pieces of 1.75mm filament 5-6mm long (You need 8 rollers)