Ready - set - print

Print the attached

  • CO2 Buddy base (black)Which will hold all the electronic components
  • CO2 Buddy housing (black)
  • CO2 Buddy top (black)
  • CO2 Buddy ring (transparent)Which will assemble to the cover which can be stacked on top of the base


This project is as simple as it can be. Glue the three components on each position given by the "CO2 Buddy base" and connect them according to the schematic below.

  • red - 5V
  • black - GND
  • yellow - I2C SCL
  • green - I2C DATA
  • blue - NEOPIXEL DATA


The Arduino code below will fade from green (800ppm) over yellow (1400ppm) to red (2000ppm) and send the current CO2 value on a Serial COM port (9600baud) every 5sec.