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11-ubnt-auto-fan-speed.sh
11-ubnt-auto-fan-speed.sh
 
 
README.md
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fancontrol
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install.sh
install.sh
 
 

README.md

WARNING

USE THIS ON YOUR OWN RISK. If you apply inappropriate settings with this script, you will possibly (soft- or hard-) brick your equipment.

Scripted Installation

You can execute in UDM/Pro/SE and UDR with:

curl -fsL "https://raw.githubusercontent.com/renedis/ubnt-auto-fan-speed/HEAD/on_boot.d/install.sh" | /bin/sh

This is a force to install script so will uninstall any previous version and install on_boot keeping your on boot files.

Manual Installation

Firmware 2.x.x, 3.x.x and for UDM Pro (SE/Max) EA 4.x.x

Installation

  • Install on_boot.d
  • Via SSH; install fancontrol (apt install fancontrol) with default settings
  • make a config file on "/etc/fancontrol" (vi /etc/fancontrol)
  • restart the fancontrol service (sudo service fancontrol restart)

Notes:

  • This is tested on a UDM-Pro with firmware 2.5.16 and UDM-Pro SE with firmware 3.0.18. Not tested on a UDM or UDR.
  • The UDM-Pro has 2 fans. A CPU fan (PWM1) and HDD fan (PWM2). The UDM-SE probably has an extra fan (not sure).
  • When "sensors" is used;
  • FAN1 = HDD-fan
  • FAN2 + FAN3 + FAN4 = CPU-fan

Example sensors output:

adt7475-i2c-4-2e
Adapter: i2c-0-mux (chan_id 3)
in1:          +0.89 V  (min =  +0.00 V, max =  +2.99 V)
+3.3V:        +3.27 V  (min =  +2.96 V, max =  +3.63 V)
fan1:           0 RPM  (min =    0 RPM)
fan2:         814 RPM  (min =    0 RPM)
fan3:         814 RPM  (min =    0 RPM)
fan4:         814 RPM  (min =    0 RPM)
temp1:        +38.0°C  (low  = -63.0°C, high = +191.0°C)
                       (crit = +100.0°C, hyst = +96.0°C)
Board Temp:   +35.0°C  (low  = -63.0°C, high = +191.0°C)
                       (crit = +100.0°C, hyst = +96.0°C)
temp3:        +35.8°C  (low  = -63.0°C, high = +191.0°C)
                       (crit = +100.0°C, hyst = +96.0°C)

Firmware 1.x.x

Installation

  • Install on_boot.d
  • Copy on_boot.d/11-ubnt-auto-fan-speed.sh to your UDM (Pro) in /mnt/data/on_boot.d
  • chmod +x /mnt/data/on_boot.d/11-ubnt-auto-fan-speed.sh
  • Adjust the settings if you want (or use mine)
  • Run the script: sh /mnt/data/on_boot.d/11-ubnt-auto-fan-speed.sh

It will survive a reboot thanks to @boostchicken 's bootscript. The OLED screen does show correct percentage and RPM. But it does not respond to changes anymore (the "slide" trick).