PC fan controller

The SprigStack Air Purifier Expansion is a high-performance modular component designed to serve as the "central nervous system" for your custom air filtration systems. Engineered with the Sprig Labs core creed of the "Three Rs"—Repairable, Replaceable, and Reprogrammable—this board ensures your hardware grows with your needs rather than becoming obsolete.

Every board is a product of professional engineering and artisanal care, Designed in Greece and tested in-house to ensure it meets the highest standards for your workbench.

Technical Features

This expansion board is designed to integrate seamlessly into the SprigStack ecosystem, accepting a Sprig-C3 or C6 microcontroller on top to provide the logic for your ingenuity.

• Four-Fan Parallel Control: Integrated headers to power and manage up to 4 standard PC fans in parallel.

• SPS30 Integration: Dedicated ribbon cable connector compatible with the Sensirion SPS30 particulate matter sensor for laboratory-grade air quality monitoring.

• Reliable Power Management: Includes high-quality screw terminals for a secure 12V input power supply.

• Switch & Indicator Support:

  • Power Switch Terminals: Connect a physical power switch via Common (C) and Normally Open (NO) inputs.

  • LED Terminals: Dedicated +/- output for a 12V on/off LED indicator, perfect for switches with integrated lighting.

Project Spotlight: The Smart Air Filter

This expansion board was specifically designed for the Smart Air Filter project, an open-source, high-efficiency HEPA filtration system that puts control back into your hands.

• Project Details: Smart HEPA Air Purifier

• See it in Action: Watch the Build on YouTube

• Open-Source Configuration: Get the Home Assistant & ESPHome Config on GitHub

What’s in the Box?

• 1x SprigStack Air Purifier Expansion PCB (Fully Assembled)

Note: To remain "Replaceable" and "Reprogrammable," this board requires additional components to function. Sprig-C3/C6 modules, SPS30 sensors, Power Switches, and PC Fans are not included.

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