Automatic Chicken Coop Door

Automatic chicken coop door for my backyard egg layers. Modeled after the commercially available Chicken Guard.

Parts List

• Arduino Pro Mini
• Monochrome 128x32 I2C OLED
• DS3231 RTC with CR2032 Battery
• 6V 10rpm 25GA Brushed DC Motor
• TB6612FNG Motor Driver
• XL6009 Buck Boost Module

Dependencies

• Low Power
• Motor Driver TB6612FNG
• FabioCuomo-DS3231
• SSD1306 1.2.9
• GFX 1.4.2

How It Works

The main program sets alarms to wake up from sleep based on sunrise/sunset times (from here). These times are consistent year after year, and is more reliable than using a light sensor which can be finicky to adjust for street lamps, headlights from passing cars, etc.

Power Consumption

• Powered on = 18.35 mA
• Motor on = 320 mA (no load), ~700 mA (load)
• Sleep = 0.94 mA