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I have a cluster of Raspberry Pi 3 machines in a cluster. To reduce power consumption I would like to turn off the wireless modules. I have learnt that HDMI can be switched off with the tvservice command:

sudo tvservice -o

Is there a similar command for wifi/bluetooth?

There is a similar question which discusses disabling wifi (Disable WiFi (wlan0) on Pi 3) but it does not specifically request the power conservation aspect which is what I am concerned with.

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  • 1
    Possible duplicate of Disable WiFi (wlan0) on Pi 3
    – GAD3R
    Oct 12, 2017 at 20:58
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    NOT DUPLICATE The question may be similar, but the answer is OBSOLETE, and is about TOTALLY disabling WiFi NOT turning it off.
    – Milliways
    Oct 12, 2017 at 23:16

2 Answers 2

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Rfkill sounds like what you are after.

$ rfkill list 

$ rfkill block (device no)

$ rfkill unblock (device no)

https://askubuntu.com/a/881572/479642

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You CAN use device id (which may be appropriate if you had multiple adaptors), but the Foundation recommended method is:-

To turn off wifi, rfkill block wifi; to turn it on, rfkill unblock wifi. For Bluetooth, rfkill block bluetooth and rfkill unblock bluetooth.

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