HATL02F Auto-Fan Control & I2C pins

Do you want to extend the life of your fan, reduce its noise and control it automatically?
With this automatic fan MaticControl module you will be able to do this.
Place it on pins 1-8. (As shown in the photos) And this is all you have to do on the hardware.
Then from Raspberry icon > Prefernces> Raspberry Pi Configuration > Performance tab >set fan enable; Fan GPIO  4; and the temperature at which you want the fan to turn on. Save with OK
Thus, when the processor reaches the temperature you set, the fan will turn on. It will turn on off only when the processor temperature drops 10 degrees below the set on temperature. (For example, if you set the On temperature to 75 degrees, the fan will turn off when the processor reaches 65 degrees).
With these few easy steps, you now have automatic fan control.

If you want to activate this feature through the console or read the full documentation – read the article or download the PDF from HERE

II. I2C pins and 3,3V power supply

GPIO 2 and GPIO 3 – the Raspberry Pi’s I2C1 pins – allow for two-wire communication with a variety of external sensors and devices. The I2C pins include a fixed 1.8 kΩ pull-up resistor to 3.3v. They are not suitable for use as general purpose IO where a pull-up might interfere. I2C pins along with a 3.3V pin are often used to connect displays or other modules that use an I2C pins.

Note: This MaticControl module covers the pins for: 5V power supply, GPIO15 (RXD) and GPIO14 (TXD). If you want to use them, we offer modules (HATs) that provide access to these pins via separate connector on the top of the board.