Low Noise Fan Cooling Techniques - Raspberry Pi PiCoolFAN4 User Manual

PiCoolFAN4

Low Noise Fan Cooling Techniques

Keeping your Raspberry Pi cool whilst also keeping fan noise to a minimum can be challenging.
Users who aren't concerned with noise can of course run their fan at full speed for the best cooling
performance, however most users will benefit from the techniques below to strike a good balance:
1. In most cases there is no need to run the fan at full speed at all times. This is not necessary as after
one step, the Raspberry Pi has been cooled and additional fast cooling is not usually required.
2. Use the best cooling level that fits the needs of your application, that balances good cooling and a
low level of noise.
3. Never select the ttemp (threshold temperature) at a very low level. This will cause the fan to run at
full speed for no reason.
4. Remember that even if your fan is running at low speed, The PiCoolFAN4 is a smart device, and if
needed, will run the fan at 100% speed (if temperatures hit that level).
5. Try to select an appropriate ttemp after observing your system temperatures within your specific
case, environment and system usage scenario.
6. The PiCoolFAN4 Cooling Profiles are designed to run the fan at 50% speed most of the time. Try to
select a ttemp and tstep that keeps your system cool and fan speed low for the majority of the
running time. Larger tstep values increase the width of the 50% window but care should be taken to
ensure the window does not allow high temperatures (linked to ttemp).
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Print Date 10.11.2019
www.thepihut.com