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Add information about HAT connection precautions when connected to power #3397

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Jan 17, 2024
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Add information about HAT connection precautions when connected to power #3397

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22 changes: 16 additions & 6 deletions documentation/asciidoc/computers/raspberry-pi-5/introduction.adoc
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Expand Up @@ -40,20 +40,26 @@ Key features include:

=== Turning it off and back on again

When you plug your Raspberry Pi into power for the first time, it will automatically turn on and boot into the operating system without having to push the button.
When you plug your Raspberry Pi into power for the first time, it will automatically turn on and boot into the operating system without having to push the button.

If you run Raspberry Pi Desktop, you can initiate a clean shutdown by briefly pressing the power button. A menu will appear asking whether you want to shutdown, reboot, or logout. Select an option from the menu or press the power button again to initiate a clean shutdown.
If you run Raspberry Pi Desktop, you can initiate a clean shutdown by briefly pressing the power button. A menu will appear asking whether you want to shutdown, reboot, or logout:

.Shutting down your Raspberry Pi 5 using the power button.
image::images/shutdown.jpg[alt="Desktop menu asking whether you want to Shutdown, Reboot, or Logout",width="100%"]

Select an option from the menu or press the power button again to initiate a clean shutdown.

NOTE: If you run Raspberry Pi Desktop, you can press the power button twice in quick succession to shut down. If you run Raspberry Pi OS Lite without a desktop, press the power button a single time to initiate a shutdown.

To force a hard shutdown, press and hold the power button.
==== Restart

If the Raspberry Pi board is turned off, but still connected to power, pressing the power button will restart the board.

NOTE: Resetting the Power Management Integrated Circuit (PMIC) can also restart the board. Connecting a HAT can reset the PMIC. Always disconnect your device from the power supply before connecting a HAT.

If the Raspberry Pi board is shut down, but still powered, pressing the power button will restart the board.
==== Decrease wattage when turned off

Default shutdown wattage is around 1W to 1.4W. This can be decreased by manually editing the EEPROM configuration with `sudo rpi-eeprom-config -e`. Change the settings to the following:
By default, the Raspberry Pi 5 consumes around 1W to 1.4W of power when turned off. This can be decreased by manually editing the EEPROM configuration with `sudo rpi-eeprom-config -e`. Change the settings to the following:

[source]
----
Expand All @@ -62,7 +68,11 @@ POWER_OFF_ON_HALT=1
BOOT_ORDER=0xf416
----

This should drop the shutdown power consumption to around 0.01W.
This should drop the power consumption when powered down to around 0.01W.

==== Hard shutdown

To force a hard shutdown, press and hold the power button.

==== Adding your own power button

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