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Questions tagged [cooling]

Use for questions related to cooling the Raspberry Pi.

This question should answer most queries about Raspberry Pi cooling:

74 questions
75
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4 answers

Can I use an airtight case?

Is it possible to reliably run a Pi in an airtight (watertight) case or is some form of ventilation required for cooling? I'm assuming it doesn't chuck out too much heat, but am wondering whether running it indefinitely this way may cause issues.
berry120
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32
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1 answer

What are the maximum operating temperatures of the components?

What are the main sources of heat on the board? What temperatures do these components reach under load?
Alex L
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17
votes
2 answers

How do you attach the case fan on the Raspberry Pi 5?

I can see where I'm supposed to plug the fan cable but it's covered up and I'm scared to tug on it in case I break it. Is there some knack to opening it?
matt burns
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16
votes
3 answers

Is it possible to immersively cool a device?

With reference to recent questions about overclocking (ie. What are the overclocking capabilities? ), is it possible to immersively cool the Raspi? Presumably such a system would have to rely on finding a coolant that is non-toxic, non-conducting,…
winwaed
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12
votes
6 answers

Raspberry Pi cooling; Blow cold air in or suck the hot air out?

I'm attaching a fan to the RPi's original case. I wanted to use a laptop cpu fan. Should I suck the hot air from RPi? or blow cold air inside the case? Btw, there's a heatsink on the Soc and LAN & USB chip.
JFetz2191
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8
votes
4 answers

How to program active cooling connected to GPIO

I have Raspberry Pi 3b+ with the case, which has a small 5v fan, which is connected to GPIO. Look to picture below: The Fan runs continuously, but I don't want continuous operation. I want the fan to run only when the temperature of the Raspberry…
romankh3
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8
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4 answers

Cooling fan powered directly from GPIO?

I have a Pi3 in a fairly enclosed environment, and I found that, even when my Pi was relatively idle (5% CPU usage) the CPU temp was averaging around 80C, which is close to the 85C where the Pi starts to underclock and the 90C where the Pi starts to…
Cerin
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7
votes
2 answers

Are resistors required for builtin PWM fans?

There are many guides on how to set up a 5V fan for a Raspberry Pi and control its speed with PWM. Usually, this includes using a a transistor a resistor between the PWM pin and the transistor gate a resistor between the PWM pin and the ground…
Uko
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7
votes
1 answer

What are the cooling requirements for Raspberry Pi 3?

The new Raspberry Pi 3 has been beefed up from the previous version. Now it comes with a Broadcom BCM2837, which is an ARM v8 quad-core Cortex-A53, clocked at 1.2GHz. I have also seen somewhere a recommendation for using a 2.5A power supply. Does…
Vassilis Papanikolaou
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7
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4 answers

Can I control a 4-pin fan with a Raspberry Pi without adding more circuitry?

I'm interested in adding a fan to my Raspberry Pi 4, but I would like to be able to control when it is on/off programatically. However, what I see is that most of the fans suitable for Raspberry Pi come with 2 pins to connect to 3.3/5V and ground…
user126679
6
votes
2 answers

Enclosing the Raspberry Pi in a Plushie

As I've seen previous projects with the Raspberry Pi being enclosed in stuffed animals and plushies. I've wanted to attempt a project in a similar environment. Will there be a problem with overheating the device when it's enclosed in such a tight…
BJesso
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6
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2 answers

Disable automatic fan speed control of the Raspberry Pi 5 to control it manually

I have a Raspberry Pi 5 with the official cooler/fan. The firmware enables it from 50°C and up in different steps. I'd like to control it manually, which is possible by writing the steps to /sys/class/thermal/cooling_device0/cur_state: echo '4' |…
Lion
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5
votes
3 answers

Where do I plug in a 5V mini fan on a Raspberry Pi?

I have a Raspberry Pi 3 Model B+. I am currently installing the Pi into a Super Tinytendo case, which came with a built-in mini fan. However, I'm not sure which set of pins I should plug the fan into. According to the specs, the mini fan is 5 volts.…
Stevoisiak
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5
votes
5 answers

How do I control GPIO-connected fan via code at a certain CPU temperature?

I have just bought a 5v Pi fan for my Pi3. I'm using Retropie 4.1 for the OS. I have connected the red and black wires of the fan to ground and GPIO 18 respectively. How can I get the fan to start when the CPU temp reaches a certain temperature? I…
Peter Swiggs
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5
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1 answer

Turn off GPIO fan when the temperature lowers by more than 5 degrees

I am able to trigger my Raspberry Pi 3B's fan to turn on at 50 °C with the following line in /boot/config.txt: dtoverlay=gpio-fan,gpiopin=3,temp=50000 However, it automatically turns off again when the temperature has dropped by 5 °C when it gets…
Paradox
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