Cloudshell2 fan script

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crazyquark
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Cloudshell2 fan script

Unread post by crazyquark » Wed Sep 06, 2017 2:36 am

Hi,

First of all, I hate bash but it was the obvious choice for this.
Second, I hate fans and their noise. My cloudshell2 has a Noctua fan but I still find it a bit loud as it's pretty close to where I sit at my desk.

So... as suggested by user odroid, I made a script that turns the fan on or off depending on temps:
https://github.com/crazyquark/xu4-cloud ... control.sh

Have a look, play with it but don't sue me if it melts your odroid-xu4. My odroid-xu4 has a large heatsink on top so it stays pretty cool by itself.

I also have my disks in an LVM setup so that's why I use

Code: Select all

fdisk -l
to list them instead of

Code: Select all

/proc/mounts
My thresholds are maybe too low or too high:
For the disks I use 45 degrees Celsius and for the CPUs(and GPU) 60 degrees Celsius.

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Re: Cloudshell2 fan script

Unread post by moon.linux » Wed Sep 06, 2017 3:41 am

:D Excellent...

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Re: Cloudshell2 fan script

Unread post by odroid » Wed Sep 06, 2017 7:35 am

Very nice script to monitor HDD & CPU temperature together.
It's "STICKY" now.

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Re: Cloudshell2 fan script

Unread post by crazyquark » Wed Sep 06, 2017 2:58 pm

Thanks!
I want to make it into a systemd service, I will post the service file to the same github repo soon.

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Controlling the fan speed by software

Unread post by treepleks » Sun Oct 01, 2017 6:43 am

I don't know if people realized and exploited the fact that the Cloudshell2 Fan is controlled by a MOSFET transistor which is itself driven by an i2c PCA9550, a2 LEDs driver that has 2 small PWM drivers each with an adjustable frequency and duty cycle.

Even if the frequency is only adjustable from 0.172 Hz to 44 Hz (period of 5.82 seconds to 0.023 second), which is kind of slow for a fan, the duty cycle can be controlled from 0 to 100% by 1/255 steps. This means the fan speed can be adjusted by software. :D

The datasheet of the PCA 9550 is here https://www.nxp.com/docs/en/data-sheet/PCA9550.pdf, It is connected on i2c bus 1 and has address 0x60. Only 5 registers are needed to control this:
  • Register 1 controls the 1st PWM frequency.The frequency is set to 44/V hertz, where V is the value written in the register.

    Register 2 controls the 1st PWM duty cycle. The inactive duty cycle is set to (100*V/255)% where V is the value written in the register.

    Registers 3 and 4 do the same for the second PWM driver.

    The 4 last bits of register 5 control the 2 outputs that drive the fan (bits 0 and 1) and the (absent) 2nd LED (bits 2 and 3).
Set register 5 to 0x00 (bits 01 and 23 to 0), the fan and the absent LED are ON. This explains why

Code: Select all

/usr/bin/i2cset -y 1 0x60 0x05 0x00
starts the fan.

Set bits 01 and 23 to 1 to "01", and the fan/LED stop.This explains why

Code: Select all

/usr/bin/i2cset -y 1 0x60 0x05 0x05
stops the fan since 0x05= 0101 in binary.

Now, more fun... We can set the frequency of PWM1 to 0.172Hz (6 seconds period roughly) by writing 255 in register 1:

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/usr/bin/i2cset -y 1 0x60 0x01 0xFF
And use a cycle duty of 50% roughly by writing 128 to register 2:

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/usr/bin/i2cset -y 1 0x60 0x02 0x80
Then, it suffices to put the output 1 (fan) under the control of PWM1 and the fan will be alternatively ON and OFF for approx. 2.8 seconds each. This is obtained by writing 0x02 to register 5:

Code: Select all

/usr/bin/i2cset -y 1 0x60 0x05 0x02
Et voila ! :ugeek:

If instead of a low frequency (reg 1 = 255) we use a faster one (reg 1 = 2 means 22Hz), then we can control the fan speed by PWM (Pulsed Width Modulation):

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/usr/bin/i2cset -y 1 0x60 0x01 0x02
(shift to 22Hz)

Full speed:

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/usr/bin/i2cset -y 1 0x60 0x02 0x00
50%:

Code: Select all

/usr/bin/i2cset -y 1 0x60 0x02 0x80
Could you inject this in your script?

In all cases. play with it but don't sue me if it melts your odroid-xu4 MOSFET. :lol:

I must say I tried, it works, and my MOSFET is still healthy. ;)

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Re: Cloudshell2 fan script

Unread post by shelby » Tue Oct 03, 2017 5:38 am

I am using the CloudShell 2 and when I try to use the following command, I get an "Error: Write failed" message.

sudo /usr/sbin/i2cset -y 1 0x60 0x05 0x00

Any help will be greatly appreciated.

Thanks in advance.
Shelby

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Re: Cloudshell2 fan script

Unread post by odroid » Tue Oct 03, 2017 12:24 pm

Did you install "cloudshell2-fan" package?
https://wiki.odroid.com/accessory/add-o ... cd_and_fan

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Re: Cloudshell2 fan script

Unread post by shelby » Tue Oct 03, 2017 11:31 pm

Yes, I've installed the "cloudshell2-fan" package.

I've stressed tested the CPU and the xu4 fan comes on at about 60C, but the external fan never seems to come on.

Thanks.
Shelby

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Re: Cloudshell2 fan script

Unread post by phaseshifter » Wed Oct 04, 2017 12:29 am

can you test for 5 volts at the fan outlet connector..???

or the output of the mosfet..???

or try another fan on the output..???
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Re: Cloudshell2 fan script

Unread post by shelby » Wed Oct 04, 2017 12:37 am

Ok, I will do that.

I recall that there are 3 conductors that the fan has. (Red, Black and Yellow). Logically speaking, the Red should be 5 volts,as you are suggesting, Black is ground and Yellow may be some sort of control.

Thanks.
Shelby

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Re: Cloudshell2 fan script

Unread post by phaseshifter » Wed Oct 04, 2017 12:58 am

yes that is correct you can also check the fet it`s self there should be 5 volts on the gate and from mem...Q7..
Last edited by phaseshifter on Wed Oct 04, 2017 1:05 am, edited 1 time in total.
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Re: Cloudshell2 fan script

Unread post by shelby » Wed Oct 04, 2017 1:04 am

phaseshifter wrote:yes that is correct you can also check the fet it`s self there should be 5 volts on the gate and from mem...
Ok, thank you very much. I really appreciate your help!

By the way, I have the current limiter circuit plugged into the CloudShell 2 board and the fan plugs into the current limiter board.

Shelby

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Re: Cloudshell2 fan script

Unread post by phaseshifter » Wed Oct 04, 2017 1:11 am

take the limiter out just 4 now and measure the output there if you can

also try the fan with another power source and see if it operates

and try the fan with out the limiter..
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Re: Cloudshell2 fan script

Unread post by shelby » Wed Oct 04, 2017 1:13 am

phaseshifter wrote:take the limiter out just 4 now and measure the output there if you can
Ok, I will and I will let you know shortly.

Shelby

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Re: Cloudshell2 fan script

Unread post by phaseshifter » Wed Oct 04, 2017 1:18 am

i dont think that coding the fan control is meant to be done with the limiter connected ..thus it lowers the current too much..could be the issue here...!!!
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Re: Cloudshell2 fan script

Unread post by shelby » Wed Oct 04, 2017 3:12 am

phaseshifter wrote:i dont think that coding the fan control is meant to be done with the limiter connected ..thus it lowers the current too much..could be the issue here...!!!
I've removed the current limiter circuit and tested the voltage. I am not getting any voltages on any of the pins.

What should I do next?

Thanks.
Shelby

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Re: Cloudshell2 fan script

Unread post by phaseshifter » Wed Oct 04, 2017 3:53 am

check for 5 volts on the gate pin of Q7 on the shell board..
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Re: Cloudshell2 fan script

Unread post by shelby » Wed Oct 04, 2017 5:07 am

phaseshifter wrote:check for 5 volts on the gate pin of Q7 on the shell board..
Ok, I will check it.

Thanks.
Shelby

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Re: Cloudshell2 fan script

Unread post by shelby » Wed Oct 04, 2017 2:38 pm

phaseshifter wrote:check for 5 volts on the gate pin of Q7 on the shell board..
Here is how the Q7, DMP2004K, chip seems to be oriented. I've attached the file. If the gate is on the lower right side as the picture suggests, then it has 5 volts on it. on the upper right side, as the picture suggests, the source has 5 volts on the drain on the left side of the picture seems to be grounded.

I will test the fan with a 5 volt supply to see if it is working. (By the way, I connected three 1.5 volt batteries in series to get about 4.5 volts and it turns on the fan.)

Thanks.
Shelby
Attachments
DMP2004K.png
DMP2004K.png (15.2 KiB) Viewed 6378 times

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Re: Cloudshell2 fan script

Unread post by phaseshifter » Wed Oct 04, 2017 3:52 pm

drain goes to ground correct.

wait for odroid to see this post...
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Re: Cloudshell2 fan script

Unread post by odroid » Wed Oct 04, 2017 4:37 pm

@shelby
Please open a new thread.

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Re: Cloudshell2 fan script

Unread post by Dragonator » Mon Oct 30, 2017 1:17 am

Hello.

I setup two 4TB WD Reds in RAID1 and they're seen as one drive /dev/sda which doesn't get any temperature value using the command you use. Is there any alternative that I could use?

Thanks.

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Re: Cloudshell2 fan script

Unread post by mrperfekotne » Fri Nov 10, 2017 6:23 am

I've tried your script on open media vault that runs debian i've run it every minute via crontab but it does not start the hard drive fan when cpu hit 60 degrees do you have any explanation? I can make it turn off the fan but it can not turn it on again.

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Re: Cloudshell2 fan script

Unread post by Raymond Day » Fri Dec 15, 2017 5:56 pm

If you can control the speed of that fan that good in software why do you include the current limiter circuit? I guess could just unplug that so the can cool better when it needs too?

-Raymond Day

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Re: Cloudshell2 fan script

Unread post by odroid » Fri Dec 15, 2017 6:22 pm

There is no way to control the fan speed due to the hardware design mistake.
We can just turn it on and off.

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Re: Cloudshell2 fan script

Unread post by Raymond Day » Fri Dec 15, 2017 6:30 pm

Reading this I thought there was a way to control the fan speed. Did not know a hardware design mistake was made.

Good to know.

Thank you.

-Raymond Day

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Re: Cloudshell2 fan script

Unread post by rquaif » Tue Jan 16, 2018 6:37 am

I too was dissatisfied with how loud the fan was on the Cloudshell 2. I was looking for a way to control the noise by replacing the voltage reducer plug adapter with something that would monitor the temperature. I thought that maybe a NE555 with a temperature sensor or something would be an easy fix but then I found that the fan was a 5V fan. 5V fans are not easy to find and I think that is why it's rather a loud fan. I wondered what would happen if I switched to a much easier to find 12V fan. That seems a bit risky running a 12V fan on 5V because the fan might not start, however, there are a series of reasonably priced fans that are designed for PWN control and are designed to run slowly. I used a ARCTIC F9 PWM PST CO - 92mm Dual Ball Bearing Low Noise PWM fan that is about $10 bucks. It is supposed to run on 5V at about 800 RPM. I simply replaced the 5V fan and removed that reducer and it works great. Very low noise and almost the same air flow as the original 5V fan with the reducer. The fan current is also much less than the 5V fan which reduces the load on the 5V supply as well. Using Linux (ubuntu-16.04.2-minimal-odroid-xu4-20170516) while transferring at max speed of 110 MB/s for hours the max CPU temp was 49C. Typically its at 35C. I did notice that if you stress the XU4 by doing other things like video, it will get hotter and this slow fan may not be good enough but for an NAS server doing little else, it seems to be fine and makes no noticeable noise.

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Re: Cloudshell2 fan script

Unread post by beedaddy » Thu Jan 25, 2018 8:49 pm

I recently bought an ODROID-XU4Q and a CloudShell2 and I am currently in the process of setting it up :).
I've installed Arch Linux on the odroid (because I'm quite happy with this distribution). So I wrote a python script for turning the fan on/off. There are thresholds for both CPU and HDD temperatures in order to turn the fan on and different thresholds in order to turn the fan off (thus it shouldn't turn on/off all too often). With a systemd script, this should be fairly easy to use.
If you like, you can have a look at it here: https://github.com/beedaddy/cloudshell2-fan
If you find any bugs, or if you have any comments on it, feel free to tell me. :)
Otherwise, I think I'll make a AUR package for it, soon.

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Re: Cloudshell2 fan script

Unread post by Raymond Day » Fri Jan 26, 2018 12:03 am

Is there a way for a user to fix the "hardware design mistake" to control the fan speed? Maybe solder a jumper or cut a trace or something?

-Raymond Day

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Re: Cloudshell2 fan script

Unread post by Raymond Day » Fri Jan 26, 2018 12:07 am

rquaif wrote:ARCTIC F9 PWM PST CO - 92mm Dual Ball Bearing Low Noise PWM fan that is about $10 bucks.
I got this fan a few days ago and installed it. Can not even hear it at all it does a little air but not as much as the other one. I put my hand in back to fell the air and it's a lot less moving.

Guess it's keeping it cool enough.

Just got this screen shot of it to show how cool or hot it is with this new fan.
screen4.png
screen4.png (2.04 KiB) Viewed 4939 times
-Raymond Day

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Re: Cloudshell2 fan script

Unread post by crazyquark » Tue Mar 27, 2018 7:40 pm

I actually replaced my fan with a Noctua, more expensive but very quiet. The only thing I hear are the HDDs spinning up. It's a Noctua NF-A9 FLX, 92 mm

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Re: Cloudshell2 fan script

Unread post by noobs4u » Fri Apr 12, 2019 9:51 pm

Will this solution work if I am using Dietpi software to run the XU4 with the CloudShell 2 case? Currently the CloudShell 2 fan doesn't turn on at all. It got REAL hot before I realized that the fan was not functioning. I've tried several other PC fans and none of them work so I'm assuming its a kernel issue??? As my name suggests, I could use some direction. Thanks!

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Re: Cloudshell2 fan script

Unread post by phaseshifter » Tue Apr 16, 2019 3:33 pm

@noobs4u diet pi has an amazing cloudshell setup ..if you can work with it...

also post on diet-pi forum..read some threads....
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Re: Cloudshell2 fan script

Unread post by noobs4u » Tue Apr 16, 2019 7:30 pm

Currently, the fan does not work with Dietpi on CloudShell 2. I’ve been using dietpi on my xu4 original cloudshell since day one of purchase until just recently. Ubuntu 18 minimalist image is what I had to use in order to get the fan working on CloudShell 2 because of the kernel. Still waiting for replies to my posts at the dietpi forum.

Here are links to conversations that haven't been active for sometime. I replied to them anyway.

https://dietpi.com/phpbb/viewtopic.php? ... 602#p17602

https://dietpi.com/phpbb/viewtopic.php? ... 603#p17603

I was not able to get any of the "solutions" to work for me. However it's very likely I didn't do something required. I don't know linux. My prior success is based off of step by step instructions that someone else did. That's the extent of my so called Linux Knowledge. I know enough to get most things simply broken.

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Re: Cloudshell2 fan script

Unread post by phaseshifter » Wed Apr 17, 2019 7:52 am

maybe you could get an usb fan controller or hard wire the fan ..i realize that hard wiring the fan makes it a constant ..
so it`s really not a good option..i have seen usb fan controllers but you need a 5 volt fan from mem the fan on the shell-II is 12 volt
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Re: Cloudshell2 fan script

Unread post by noobs4u » Wed Apr 17, 2019 7:56 am

phaseshifter wrote:
Wed Apr 17, 2019 7:52 am
maybe you could get an usb fan controller or hard wire the fan ..i realize that hard wiring the fan makes it a constant ..
so it`s really not a good option..i have seen usb fan controllers but you need a 5 volt fan from mem the fan on the shell-II is 12 volt
I did purchase one. I was just hoping to update the dietpi kernel somehow. It would really simplify things.
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