Iris tự động bằng servo – mod SG90 cho ESPHome / Home Assistant

Added .step and fusion360 source files

I plan to use this automated iris remix for my prusa enclosure and later to control my air exhaust system from the printers and laser cutter.

Using a 24 teeth spur gear instead of th 12 teeth, allows me to use an ordinary sg90 servo, which in turn, allows me to use esphome to control the servo.

This means I can easily open and close the iris from home assistant ;) on top of a push button to toggle the iris.

Materials needed : 

• esp32
• 5  m3 x 5mm
• Servo SG90 (or similar)

Print:

5 * door_blade_final 
1 * spur-gear-107th-125mo-145at
1 * Spur Gear (24 teeth)
1 * baseplate-aperature-sg90

You can use one of the provided esphome examples to control this iris.

Run them with esphome to flash the firmware 

esphome-iris.yaml → this open and closes the iris on a press of the button

esphome-iris-ha.yaml → like above but requires to setup wifi and home assistant connection, allows to open/close the iris from home assistant

wiring for the esphome example provided 

servo signal → esp32:GPIO14
servo + → esp32: +5v (VIN)
servo - → esp32: GND

Button In: esp32:GPIO26
Button Out: esp32:GND