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* Soap bubble liquid | * Soap bubble liquid | ||
* Lots of cables... | * Lots of cables... | ||
[[File:CO2 sensor.jpg|none|thumb]] | [[File:CO2 sensor.jpg|none|thumb|CO2 sensor MHZ-19C]] | ||
[[File:Stepper motor + driver.jpg|none|thumb|Stepper motor + driver module]] | |||
=== Wiring Diagram === | === Wiring Diagram === | ||