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Update Fan Cases with mention of the Pi 4 Case Fan #3929

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Merged
merged 3 commits into from
Nov 21, 2024
Merged

Update Fan Cases with mention of the Pi 4 Case Fan #3929

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b06f6be
update fan case section with mention of the pi 4 case fan
Nov 21, 2024
5f6f6fa
update readability of the section on Pi 5 fan options
Nov 21, 2024
82c69d7
update info structure per feedback
Nov 21, 2024
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8 changes: 5 additions & 3 deletions documentation/asciidoc/computers/raspberry-pi/frequency-management.adoc
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Expand Up @@ -59,14 +59,16 @@ Thanks to built-in throttling, heatsinks are not necessary to prevent overheatin

=== Fan cases

For the Raspberry Pi 4, you have the option of adding the https://www.raspberrypi.com/products/raspberry-pi-4-case-fan/[Raspberry Pi 4 Case Fan] to the lid of the Raspberry Pi 4 case.

Raspberry Pi 5 has two official fan options to assist with cooling:

* https://www.raspberrypi.com/products/active-cooler/[Active Cooler]
* https://www.raspberrypi.com/products/raspberry-pi-5-case/[Case for Raspberry Pi 5]

Both of these plug into the four-pin JST-SH PWM fan connector located in the upper right of the board between the 40-pin GPIO header and the USB 2 ports. The fan connector pulls from the same current limit as USB peripherals. We recommend the Active Cooler case for overclockers, since it provides better cooling performance.
Both of the Raspberry Pi 5 fan options plug into the four-pin JST-SH PWM fan connector located in the upper right of the board between the 40-pin GPIO header and the USB 2 ports. The fan connector pulls from the same current limit as USB peripherals. We recommend the Active Cooler case for overclockers, since it provides better cooling performance.

Both of the available official accessories are actively managed by Raspberry Pi firmware. As the temperature of the Raspberry Pi increases, the fan reacts in the following way:
The fans of the Active Cooler and the Raspberry Pi 5 Case are both actively managed by Raspberry Pi firmware. As the temperature of the Raspberry Pi 5 increases, the fan reacts in the following way:

* below 50°C, the fan does not spin at all (0% speed)
* at 50°C, the fan turns on at a low speed (30% speed)
Expand All @@ -80,7 +82,7 @@ At boot the fan is turned on, and the tachometer input is checked to see if the

==== Fan connector pinout

The fan connector is a 1mm pitch JST-SH socket containing the following four pins:
The Raspberry Pi 5 fan connector is a 1mm pitch JST-SH socket containing the following four pins:

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