Fans

Active Cooler

The Active Cooler on the Pironman 5 Mini is controlled by the Raspberry Pi system.

Regarding cooling solutions for the Raspberry Pi 5, especially under heavy load, the design of the Pironman 5 Mini incorporates a smart cooling system. It features a primary Active Cooler (active cooler) and a supplementary RGB fan. The cooling strategy is closely integrated with the Raspberry Pi 5’s thermal management system.

The Active Cooler’s operation is based on the Raspberry Pi 5’s temperature:

Below 50°C, the Active Cooler remains off (0% speed).
At 50°C, the fan starts at a low speed (30% speed).
Reaching 60°C, the fan increases to a medium speed (50% speed).
At 67.5°C, the fan ramps up to a high speed (70% speed).
At 75°C and above, the fan operates at full speed (100% speed).

This temperature-to-speed relationship also applies when the temperature decreases, with a 5°C hysteresis. The fan speed reduces when the temperature falls 5°C below each of these thresholds.

Commands to monitor the Active Cooler. To check the Active Cooler’s status:
```
cat /sys/class/thermal/cooling_device0/cur_state
```

To view the Active Cooler’s speed:

cat /sys/devices/platform/cooling_fan/hwmon/*/fan1_input

In the Pironman 5 Mini, the Active Cooler is a critical component for maintaining optimal operating temperatures, particularly during intensive tasks, ensuring the Raspberry Pi 5 runs efficiently and reliably.

RGB Fan

Extermal dimension: 40*40*10MM
Weight: 13.5±5g/pcs
Life: 40,000 hours (room temperature 25°C)
Maximum Air Flow: 2.46CFM
Max.Air Pressure: 0.62mm-H2O
Accoustic Sound: 22.31dBA
Rated Input power: 5V/0.1A
Rated Speed: 3500±10%RPM
Operating Temperature: -10℃~+70℃
Storage Temperature: -30℃~+85℃