Smart Fan HAT the Best Cooling Solution for Raspberry Pi

FEATURES 40x40x10mm fan with 6 CFM airflow Step-up 12V power supply for precise fan speed control PWM Controller modulates the fan to keep constant Pi temperature Draws less than 100mA of power Stackable to itself, 2 fans can be added to Raspberry Pi Fully stackable allows adding other cards to Raspberry Pi Uses only I2C interface, leaves full use of all GPIO pins Works with any Raspberry Pi from ZERO to 5 ECCN Code EAR99 (Ver. 6.0 uses also GPIO 12) Super quiet and efficient. Command Line Interface Python Library Python Example Node-RED node Home Assistant Integration DESCRIPTION A must for all mission critical installations Due to semiconductor shortages, the current version of the Fan does not have a processor. It implements PWM fan control over the I2C bus using a local oscillator and a serial potentiometer. Raspberry Pi four was welcomed by the Pi enthusiasts for the increased processing power. However, this came at a price. The Pi 4 can draw up to 3 Amps, which means it has to