Materials List: Using Microcontrollers to Model Homeostasis

See the Buying Guide for more details on what and where to buy materials for this activity.

Each group needs:

  • ArduinoTM Uno Development Board or equivalent
  • breadboard
  • computer with Arduino IDE software loaded; download the Arduino software from
  • USB cable, for powering Arduino/uploading code
  • 10 wires to connect components, such as 6- or 7-inch jumper wires for Arduino boards
  • 3 LEDs
  • TMP36 temperature sensor
  • 3 220 ohm (Ω) resistors; alternatively, use 330 ohm resistors
  • 1-megaohm (MΩ) resistor
  • IRF510 n-channel MOSFET (metal-oxide-semiconductor field-effect transistor)
  • 12V computer cooling fan
  • 12V AC adapter, to power the fan
  • Circuit Building Instructions Sheet, one per student
  • science notebook, journal or paper, and pen or pencil, for each student