chicken-door/circuitry/parts-list.org

• Circuitry Parts List
  • Arduino
  • Motors and Solenoid
  • Control
  • Connectivity
  • Also need

Circuitry Parts List

All of these parts were ordered from Adafruit. While not the cheapest, Adafruit provides a valuable service to beginners by narrowing down the nearly infinite field of components into a few of each category to choose from.

Arduino

• ItsyBitsy 32u4 - 5v

Motors and Solenoid

• NEMA-17 Stepper motor - 12v 350mA
• Small Push-Pull Solenoid - 12v

• 2x Dual H-Bridge - L293D

  • I have learned since ordering this that it is a pretty inefficient chip, but it seems to be working just fine for my needs.

Control

• Log-scale Analog Light Sensor
• 2x Micro Switch w/ Roller Lever

Connectivity

• 3x 2-pin JST Plug + Receptacle Set

  • Open limit switch
  • Close limit switch
  • Solenoid

• 3-pin JST Plug + Receptacle Set

  • For connecting two toggle switches for manual override
  • Optionally add one additional if you want the light sensor detached from the board

• 4-pin JST Plug + Receptacle Set

  • For connecting the stepper motor
• 2.1mm DC barrel jack
• Bakelite Perfboard Plates

Also need

• 12v power supply

  • This could be a wall outlet, or a car battery
• Breadboard and jumper cables for prototyping
• Acrylic or light plywood for the door
• Acrylic for the light sensor window