From b06f6bef2b3d9570d8c1b5b40f0056d35eb3c956 Mon Sep 17 00:00:00 2001 From: Natalie Ho Date: Thu, 21 Nov 2024 13:34:21 -0500 Subject: [PATCH 1/3] update fan case section with mention of the pi 4 case fan --- .../asciidoc/computers/raspberry-pi/frequency-management.adoc | 2 ++ 1 file changed, 2 insertions(+) diff --git a/documentation/asciidoc/computers/raspberry-pi/frequency-management.adoc b/documentation/asciidoc/computers/raspberry-pi/frequency-management.adoc index 78fc77cee..eb1b1d450 100644 --- a/documentation/asciidoc/computers/raspberry-pi/frequency-management.adoc +++ b/documentation/asciidoc/computers/raspberry-pi/frequency-management.adoc @@ -59,6 +59,8 @@ 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] From 5f6f6faa1fcac36de91e562d5330ff1cc0f26b43 Mon Sep 17 00:00:00 2001 From: Natalie Ho Date: Thu, 21 Nov 2024 14:12:05 -0500 Subject: [PATCH 2/3] update readability of the section on Pi 5 fan options --- .../computers/raspberry-pi/frequency-management.adoc | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/documentation/asciidoc/computers/raspberry-pi/frequency-management.adoc b/documentation/asciidoc/computers/raspberry-pi/frequency-management.adoc index eb1b1d450..c8d2c3174 100644 --- a/documentation/asciidoc/computers/raspberry-pi/frequency-management.adoc +++ b/documentation/asciidoc/computers/raspberry-pi/frequency-management.adoc @@ -66,9 +66,9 @@ 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) @@ -82,7 +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: [cols="1,2,2",width="50"%"] |=== From 82c69d73857b428eebdcfd1c578ff738be3e4860 Mon Sep 17 00:00:00 2001 From: Natalie Ho Date: Thu, 21 Nov 2024 16:22:39 -0500 Subject: [PATCH 3/3] update info structure per feedback --- .../raspberry-pi/frequency-management.adoc | 14 ++++++++++---- .../computers/raspberry-pi/introduction.adoc | 2 +- 2 files changed, 11 insertions(+), 5 deletions(-) diff --git a/documentation/asciidoc/computers/raspberry-pi/frequency-management.adoc b/documentation/asciidoc/computers/raspberry-pi/frequency-management.adoc index c8d2c3174..3fc5ceb01 100644 --- a/documentation/asciidoc/computers/raspberry-pi/frequency-management.adoc +++ b/documentation/asciidoc/computers/raspberry-pi/frequency-management.adoc @@ -59,16 +59,22 @@ 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. +To ensure the best performance for your Raspberry Pi, use an active cooling solution such as a fan. Raspberry Pi firmware manages fan speeds for all official fans. -Raspberry Pi 5 has two official fan options to assist with cooling: +==== Raspberry Pi 4 fan + +For Raspberry Pi 4, add 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 fans + +For Raspberry Pi 5, use one of the official fan options: * 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 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. -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: +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) @@ -80,7 +86,7 @@ Temperature decreases use the same mapping with a 5°C **hysteresis**; fan speed At boot the fan is turned on, and the tachometer input is checked to see if the fan is spinning. If it is, then the `cooling_fan` device tree overlay is enabled. This overlay is in `bcm2712-rpi-5-b.dtb` by default, but with `status=disabled`. -==== Fan connector pinout +==== Raspberry Pi 5 fan connector pinout The Raspberry Pi 5 fan connector is a 1mm pitch JST-SH socket containing the following four pins: diff --git a/documentation/asciidoc/computers/raspberry-pi/introduction.adoc b/documentation/asciidoc/computers/raspberry-pi/introduction.adoc index 95adf43e1..37c654ef8 100644 --- a/documentation/asciidoc/computers/raspberry-pi/introduction.adoc +++ b/documentation/asciidoc/computers/raspberry-pi/introduction.adoc @@ -189,7 +189,7 @@ a| * single-lane https://datasheets.raspberrypi.com/pcie/pcie-connector-standard.pdf[PCIe FFC connector] * https://datasheets.raspberrypi.com/debug/debug-connector-specification.pdf[UART connector] * RTC battery connector -* xref:raspberry-pi.adoc#fan-connector-pinout[four-pin JST-SH PWM fan connector] +* xref:raspberry-pi.adoc#raspberry-pi-5-fan-connector-pinout[four-pin JST-SH PWM fan connector] * PoE+-capable Gigabit Ethernet (1Gb/s) * 2.4/5GHz dual-band 802.11ac Wi-Fi 5 (300Mb/s) * Bluetooth 5, Bluetooth Low Energy (BLE)