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Adafruit EMC2101 I2C PC Fan Controller and Temperature Sensor

Adafruit EMC2101 I2C PC Fan Controller and Temperature Sensor

Pimoroni

£4.5

Price read from Pimoroni on 2026-10-22. Check before buying.

Cooling fans...They're everywhere, and they serve the important purpose of keeping things cool, generally electronics. One might rightfully think: "these fans are pretty good at moving air to keep things cool; maybe I can use one of these neat computer fans to keep my widget frosty" followed closely by throwing up one's hands in confusion at the sight of a 3 or even 4-pin connector. OK, power takes two pins but what are these other pins for and how do I use them to convince this fan to keep my things chilly? The EMC2101 from Microchip/SMSC is a fan controller with temperature monitoring , and

Pimoroni's own words, read from their page.

Buy from PimoroniOut of stock. Price seen 2026-10-22. Not an affiliate link, we earn nothing from it.

Where this comes from

The part other shops don't tell you. Three separate questions, kept separate on purpose, each with its source.