Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4888705.

There is a new, improved version of door opener (Knob door opener v.2). Be sure to check it first - https://www.thingiverse.com/thing:4888715

Servo door opener (part of a larger DIY smart house project, more at http://pchrusciel.com)

Required parts:

• 20kg servo motor
• 1x servo disc
• 4x M3 bolts and nuts
• Arduino Nano
• 1x red LED
• 1x blue LED
• 2x 1kOhm resistor
• 1x 10kOhm resistor
• 1x button