Pi 5 fan activation bracket [SOLVED]
March 24, 2024, 22:30
How can I lower the pi 5 active cooler fans activation bracket? Not sure if it's British temperature but my pi idles at about 45°C and only just about reaches the first bracket at full throttle. To get that little bit more out of my pi and prevent the die from breaking from too much thermal changes how can I lower this temp and/or keep the fan on constantly. For whatever reason the option isn't in sudo raspi-config like temp control is for the pi 4.
nice, another brit
Only the best country to exist! 😂
Have any ideas?
Nah it isn't because ya brit, my pi also run at idle 45-47 even with a fan
I'm looking at the docs
Yeah pretty much searched them
Don't know why they purposely avoided this
I don't have a pi 5 check
but where do the fan connector traces actually go?
You want me to look?
yeah
Not sure if your in Britain but im in pitch black rn
true
I can check tomorrow
but I also have lights
Lol no I'm sick in bed.
fair enough
Been asleep pretty much the entire day lol. Tomorrow I'll be better and can check
Do you want me to just look where the copper goes?
yeah
Oh not to mention I plan to do some testing with overclocking tomorrow
Will do 🫡
cool
Then you plan to control it directly?
Forgetting fancy raspi-config
well, I plan to work out what's driving it
bad news
Ah ok
Yes?
"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:"
firmware
not software
the bios manages the fan speed
Oh
so you'd need to make a custom firmware image
I do not wanna do that
though
you do get a dt overlay for it
Too much work and I don't have two different boot devices. The current one I have is used as my Nas with too many files I don't wanna lose
How difficult is that?
no at all because it gives it to you
the difficult part is making use of it
I'm looking into it
I'm gonna commit a GitHub request for this feature
https://github.com/raspberrypi/firmware it'd be here right?
this is compiled
I'm looking for the source
but this part of it is licensed under GPL
so it should be available
its possible to check if you have a pi 5 without having to find the source
I just don't have a pi 5
I'm confused. Explain to me like I'm 5
dt overlay could give you control
Why would you want to check if I have a pi 5?
I know I have a pi 5
so that I can find if the dt overlay will give you that control
and if so how to control it
But why would that require you checking if I have a pi 5? I don't know why I'm stuck on this tbh
because
I don't like debugging by telling people to do things and trying
I like to solve the problem, then tell them the solution
I get that
I attempt to solve stuff on my pi first too
so
the overlays I can find are compiled
so I can't read them
but the pi can
but I don't have the pi
How would I share you my terminal?
hang on hang on
there's a readme
with a list of parameters
Ok nice
uh
the cooling fan appears to just be a boolean
AH
I've found it
fan_temp0 Temperature threshold (in millicelcius) for
1st cooling level (default 50000). Pi5 only.
fan_temp0_hyst Temperature hysteresis (in millicelcius) for
1st cooling level (default 5000). Pi5 only.
fan_temp0_speed Fan PWM setting for 1st cooling level (0-255,
default 75). Pi5 only.
fan_temp1 Temperature threshold (in millicelcius) for
2nd cooling level (default 60000). Pi5 only.
fan_temp1_hyst Temperature hysteresis (in millicelcius) for
2nd cooling level (default 5000). Pi5 only.
fan_temp1_speed Fan PWM setting for 2nd cooling level (0-255,
default 125). Pi5 only.
fan_temp2 Temperature threshold (in millicelcius) for
3rd cooling level (default 67500). Pi5 only.
fan_temp2_hyst Temperature hysteresis (in millicelcius) for
3rd cooling level (default 5000). Pi5 only.
fan_temp2_speed Fan PWM setting for 3rd cooling level (0-255,
default 175). Pi5 only.
fan_temp3 Temperature threshold (in millicelcius) for
4th cooling level (default 75000). Pi5 only.
fan_temp3_hyst Temperature hysteresis (in millicelcius) for
4th cooling level (default 5000). Pi5 only.
fan_temp3_speed Fan PWM setting for 4th cooling level (0-255,
default 250). Pi5 only.
so in config.txt you could put
... dtoverlay=fan_temp0,40000
and it would start the fan at 40 degrees
<@1071178789939331253> solved
Nice
Can I change the rest? Or would that also change the rest of the brackets?
yeah
you can change the rest
So if I want to put every bracket down by 10° how would that look?
uhh
hang on
this isn't something I've really done before
Yes of course no problem
Glad I could challenge you
ok
so
I got it wrong
but
I know what to do differently
Ok..
this args are all passed to the pi's base dtb
could you send me a copy of config.txt from your pi for reference?
Sure
cheers
My mind isn't working what directory is the config on again? I swear it was just in the .conf Dir
But ls -a isn't picking it up
/boot/firmware
I think
Here ya go
# For more options and information see # http://rptl.io/configtxt # Some settings may impact device functionality. See link above for details # Uncomment some or all of these to enable the optional hardware interfaces #dtparam=i2c_arm=on #dtparam=i2s=on #dtparam=spi=on # Enable audio (loads snd_bcm2835) dtparam=audio=on # Additional overlays and parameters are documented # /boot/firmware/overlays/README # Automatically load overlays for detected cameras camera_auto_detect=1 # Automatically load overlays for detected DSI displays display_auto_detect=1 # Automatically load initramfs files, if found auto_initramfs=1 # Enable DRM VC4 V3D driver dtoverlay=vc4-kms-v3d max_framebuffers=2 # Don't have the firmware create an initial video= setting in cmdline.txt. # Use the kernel's default instead. disable_fw_kms_setup=1 # Run in 64-bit mode arm_64bit=1 # Disable compensation for displays with overscan disable_overscan=1 # Run as fast as firmware / board allows arm_boost=1 [cm4] # Enable host mode on the 2711 built-in XHCI USB controller. # This line should be removed if the legacy DWC2 controller is required # (e.g. for USB device mode) or if USB support is not required. otg_mode=1 [all]
thanks
Should I go ahead with the push request?
wait what
alright
this is news so good I cannot quanitfy it
Sorry I used the wrong git lango in the wrong place
because these paremeters are part of the main device tree
What?
you don't even have to specify them as dtparams
because they're part of the main dt
So... Remember I'm 5.
You don't have to call the fans name
you can just shout instructions at it
that can be taken in another meaning without context 💀
# Base fan temps # fan_temp0=50000 # fan_temp1=60000 # fan_temp2=67500 # fan_temp3=75000 # Lowered by 10 degrees fan_temp0=40000 fan_temp1=50000 fan_temp2=57500 fan_temp3=65000
there
you add that to the end of config.txt
I mean I've got the mental capacity of a 5 year old
ight ight
Nice. And if I want to change one of them it's just the actual temp multiplied by a 1000 right?
yes
Why is that may I ask? Surely the pi doesn't have that accuracy
And last I remember ive never heard of microcelsious
why does vcgencmd return values multiplied by 1000?
because it uses the same system
you can also change the speed and hysteresis of the fan
speed being obvious
and hysteresis being the difference between the temperature it has to be to go up and the temperature it has to be to go down
basically a software schmitt trigger
It doesn't for me. Atleest that is without any args
vcgencmd measure_temp
oh woops
nvmd
idk
I just looked at the default vals
temp=49.4'C
though it is the same system
Yeah I am assuming it's just deviding by 1000
Ok I'll play along with it tomorrow as well as how it works with the overclocking
cool
Btw if you've ever done overclocking what's the highest you can get without it crashing on stress tests? And on what pi
Jeff Geerling modified his best one up to 3.14GHz for pi day
Yeah
that was cool
but he only had one that could go to 3GHz anyway
That's the inspiration for asking this question actually 😁
Nice
I wanted to see what your die is like
I overclocked my 3 and 4 once
can't remember what to though
If I try it my files are safe right?
yeah
worst comes to worst you can change config.txt from a different computer
Yeah thought so
Well actually no I can't... I don't have another SSD slot in my computer
just unplug what ever's in the other one temporarily
On my computer?
well
what's in the other one?
But that's what it's booting off of.
then how did you flash it originally?
Literally only have 1 slot. It's a laptop
I used an old SD and RPi imager from cli
That SD card is being used in my pi 4 tho
also why do you boot your laptop from sd?
*SSD
then why can't you put an sd card in it?
Because it's being used by the pi 4. Little tight for storage devices ik
alright lets start clean
why IO does your laptop actually have?
I could actually use my usb although it's really tight for raspberry pi os since it's 4 gb
All the normal stuff on the outside like usbs and SD card, hdmi and ethernet ofcourse
what about the internal hard drive?
But nothing available in the inside. It only has one nvme slot and that's being booted from
It does have 1 free HDD slot but I don't have a hdd
is it like a sata connector?
you could also connect an SSD to that
Not Sure at all
But regardless, that leaves you a spare sd card slot
I actually didn't check since I think the actual connector is on the wrong side of the board
I just know it is it has a spare space for a HDD which would be used if I got the upgraded more expensive laptop
so why can't you use it like this?
You mean I just ram my SSD into the SD card reader and hope it works? I didn't know it could be read nor fit into it
Unless you mean a adapter
no
no
no
no
I don't mean any of that
I mean, plug the ssd into the m.2 slot, and plug the sd card into the sd card slot
On my computer? I get the first part but why would the SD card get involved now?
because we're trying to modify data on an sd card?
What laptop do you have?
No we're trying to modify it on an ssd
Asus vivobook something or other
Actually let me check one second
Yes it's Asus vivobook
so, the laptop doesn't have an sd card slot
so you're using a card reader?
No it does have one.
not all vivobooks do then
Have you tried live booting from an USB
I'm saying the pi boots of a SSD so we'd change config.txt on the SSD so the SD card doesn't need to get involved
oh what
your pi is booting from an sdd
what interface does that ssd use?
I'm planning to try it but my usb might not have enough
Nvme I think. I'm using the pimoroni hat
I see
SSD for reliability ofcourse
sd for convinience ofc
I'm joking
Nah
anyway it should be fine
How much storage does pi os lite use? At it's absolutely lowest
do you plan to run it on your host system?
Alpine linux fits in under 1GB
pi os lite needs at least 4GB
Well could I boot from alpine quickly on the usb just to change config.txt?
yeah
you could try looking for a live boot image for something like that
hell even archiso could do it
What's archiso?
the arch linux installer
it's a "minimal" system
though it is 1GB
Linux mint does that for me. I could also use the imager to do so
Mint has the same. Love the feature.
If I find a way to store all my files of the SSD although painful, I will probably switch to alpine to boot off of pernamentally now I think about it
How much more efficient is it?
it's just a very minimal system
give me a minute
Yes. That's why I like it
the disk image is 200mb
it's tiny
although it does not come with a text editor
there is an image that comes with some stuff
I'd look into that
I mean I can just use nano right?
Nah its arch not debian
Arch works though right?
no
the apline iso does not ship with any text editor
Oh including Nano
yeah
including nano
Fun. Then can I not install it?
Or is apt not included either 😂
I don't really know how the alpine package manager works put apk add nano didn't work
apt is debian exclusive
so no
apt isn't included
Oh
Damn alpine is really cut back huh
the install image is
Just checking, ls and everything is still normal right?
yeah
I wouldnt have to completely relearn Linux then
no
its not included on the live image
I'm going to look at the extended image
it's 700mb larger
Still under 4GB
the extended image ships with nano and vim
you just have to add them with apk
Nice
To install id use a monitor?
On the pi
wait what
I was talking about installing this on a disk to load on your laptop to recover the config if we had to
Why couldn't we just boot the pi off it and access it that way?
because alpine extended doesn't build for arm
You were right
Well atleest I get ya now. Wouldnt loading an image we can use on the pi be easier?
One below 4GB
it doesn't really matter
there are pi builds of alpine which you'd probably be able to get a text editor on if you really needed it
I do remember I could just about use raspberry pi os on the usb but I couldn't do anything past that. A upgrade or installing something would just fail
Felt claustrophobic for it lol
Thank you tho. I'm gonna rest now
cool
ive done your changes but doesnt turn on at 40 degrees
and 50 degrees (the only bracket i can get into) doesnt seem any faster
but atleest i overclocked succesfully
wait no i cant do that because the ssd is first in the boot order
hmm
ew bri ish
jk ily
so
there's another file
not just config.txt
that controls the loading of the base device tree
Ooooh
idk what the file is called though
but I remember it existing
Oh nice
Config.conf? I remember that
what's in it?
nvmd
I was thinking of cmdline.txt
its unrelated
Oh
So no new advancements?
maybe
still thinking
# Base fan temps # dtparam=fan_temp0=50000 # dtparam=fan_temp1=60000 # dtparam=fan_temp2=67500 # dtparam=fan_temp3=75000 # Lowered by 10 degrees dtparam=fan_temp0=40000 dtparam=fan_temp1=50000 dtparam=fan_temp2=57500 dtparam=fan_temp3=65000
perhaps this?
Anything use in the dir .config?
Already tried it remember
no
this is modified
Ohh
it feeds it straight to the device tree
rather than someting else (?)
Oh I'll have to do it tomorrow again
It's late
ik
Yeah
anyway I'm getting a pi 5 soon
should make all this faster lol
What pis you have currently?
I've got 2 pi zero ws, 3 picos, a pi 3 and a pi 4 (blown power resistors)
You got no roles tho
ah
updated role system
But makes sense. You plan to use the pi for a home server too?
idk
I've got a cheap vps so I'm not sure
There u go
You have no clue what your gonna do with it?
No
I like messing with the faster IO
good for radio based on harmonics
no radio chip needed lol
yeah
I do what I feel like doing
You didn't think it out at all tho did you
no
I thought out and planned exactly what I was using it for and why I needed it
I like using them ig
Cool for seeing how ARM is coming along
That is because I'm tight on money working solely off pocket money 😂 so I have to think about what I buy a lot
yeah
A pi 3 could do for that tho
yeah
but
err
speed
Sure
I don't actually know what's new on the pi 5
other than the fan connector
It sure is fast, about a low-medium laptop
wowzers
a power button
Apart from speed it's got a RTC and pcie port
And power button
you forgot the UART debug port
Yeah
the GPUs better too
Yes
rp1 chip but im not actually sure what the advantage of having that is
faster IO (?)
Faster io?
Interchangable connectors
I think
Beat me to it
It's like a southbridge on a motherboard
the chipset
What's that mean?
You can't just have a CPU sitting on its own
something needs to sit between the CPU and the things it connects to
Yeah
So the RP1 does that?
yeah
I think
Idk
I mean 2A upgrade has to be going to something
That's how I see it
cool
Hey btw what do you do as a job if you don't mind me asking?
I think I'm the same age you are
I don't think so
I'm 14. You?
yeah
Oh wow.
And I thought I was decent for my age
you are
better than anyone else ik
Apart from yourself
no comment
That shocked me, you never said this before have you?
Don't think so
Yeah I didn't miss it then
Jees thats the shock. So year 9?
y10
first half
Ohh ok
I mentioned it once
Ohh
When'd you get into pis?
My first computer was a pi 3
Oh lol
yeah
What year was that?
not sure
give me a minute
it couldn't have been later than 2017
Oh yeah you've had a lot more practice time
yeah
I got a pi about when I joined this server
ah
Once you understand why things are the way that they are it becomes much easier
yeah
Yeah It becomes pretty nice and easy I get that
I'm there with Linux cli, dockers the next step
ah
I have a discord bot running on docker
Still kinda confusing to me
its funny
Whats it for?
its double containerised
Don't want to self promote, I'll send in DMs
Sure
You tested yet?
Ohhh yeah
I forgot so badly
I'll do it rn
just replying to it so it's easily findable for me later
done and rebooting
<@685869137939267603> it works!
Yay
thank you so much
You could write an FaQ think about this
Or maybe I'll do it
oh cool
i think you should take the cred but if you dont want to write it i will
I'll write it dw
<@1071178789939331253> I made the faq
Nice
Nice
<@1071178789939331253> hey so i think i found something
in raspi-config
when u go into performance settongs
theres that
and it lets u set the temp
i dont know if its the same on pi 5 tho
yes thats what i checked at first
a couple months ago when i first tried this it said "this is not supported for your pi", now its not even their
i found it strange and made me think they are purposefully avoiding this