![Adafruit EMC2101 I2C PC Fan Controller and Temperature Sensor [STEMMA QT / Qwiic] : ID 4808 : $5.50 : Adafruit Industries, Unique & fun DIY electronics and kits Adafruit EMC2101 I2C PC Fan Controller and Temperature Sensor [STEMMA QT / Qwiic] : ID 4808 : $5.50 : Adafruit Industries, Unique & fun DIY electronics and kits](https://cdn-shop.adafruit.com/product-videos/1024x768/4808-05.jpg)
Adafruit EMC2101 I2C PC Fan Controller and Temperature Sensor [STEMMA QT / Qwiic] : ID 4808 : $5.50 : Adafruit Industries, Unique & fun DIY electronics and kits
![Amazon.com: Taidacent 2510-4P 3P Manual 4 Wires 0-5V 12V Fan Speed Controller PWM Speed Control On Off Switch for PC CPU Case Fan with Knob (Solder Connector with Plastic Black Knob) : Amazon.com: Taidacent 2510-4P 3P Manual 4 Wires 0-5V 12V Fan Speed Controller PWM Speed Control On Off Switch for PC CPU Case Fan with Knob (Solder Connector with Plastic Black Knob) :](https://m.media-amazon.com/images/I/81FUAPWO5BL.jpg)
Amazon.com: Taidacent 2510-4P 3P Manual 4 Wires 0-5V 12V Fan Speed Controller PWM Speed Control On Off Switch for PC CPU Case Fan with Knob (Solder Connector with Plastic Black Knob) :
![Project] Arduino-based fan controller (4 fans) with support for automatic/manual control and speed display : r/hardware Project] Arduino-based fan controller (4 fans) with support for automatic/manual control and speed display : r/hardware](http://i.imgur.com/f6DnIPy.jpg)