Questions tagged [cooling]

Use for questions related to cooling the Raspberry Pi.

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2answers
45 views

Air cooling calculation? [closed]

How do I calculate the airflow needed to cool a RPi2 / 3 / 4? Assume "cool" means keeping the chip below a temperature where the Pi needs to throttle. Assume the chip is being stress tested, ...
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1answer
43 views

Raspberry Pi cooled with a Peltier cell [closed]

I've an RPI3B+ mounted in an IP65 box and placed inside a greenhouse. Obviously the CPU becames really hot during the day and it reaches 80°C (even after the installation of the small heatsinks). I ...
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2answers
101 views

raspberry pi fan don't start to spin without hand help!

Raspberry Pi has recently added fan control feature in its raspi-config tool. This made me curious to add a fan to my RPI 4. I did it recently with a 680-ohm resistor, 2N2222 transistor, 1N4007 diode, ...
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2answers
39 views

Pi-4 with fans and ribbon cable

New to this. I bought a pi-4 kit. It has dual heatsink fans that get connected to pin 4 and 6. however, I want to do other projects and need to connect a ribbon cable to it. how can i do that while ...
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3answers
82 views

Raspberry PI cooling

I have just recently got a Raspberry PI 4B with 8GB RAM and I am wondering how much cooling is necessary. The usecase will be installing Arch Linux and using it as my daily driver, so it probably has ...
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1answer
132 views

What are the CPU fan speed options for the Pi? [closed]

I see that I can connect my CPU fan (included with a kit) to pins 4 and 6 (red and black respectively) to cool my CPU. However this is rather loud. How can I run the fan in a way that is quieter? How ...
1
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2answers
66 views

Shields and access/share of power supply for fan

Deconz Raspbee II, Dresden Electronics shields occupy 10 pins of Raspberry PI, including all 5 V / 3 V. At same time the DIN casings for Raspberry PI do often provide, a fan that needs a power supply ...
3
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3answers
2k views

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 ...
1
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1answer
239 views

How to dimension a heat pipe + radiator for passive cooling of the RPi 4 B?

I'd like to cool a Raspberry Pi 4 Modell B with passive cooling only. To get the heat away from the chip I'd like to use a heat pipe and radiator to distribute the heat. Something like this. My ...
0
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1answer
257 views

Comfortable long-term operating temperature for Raspberry Pi 4B [closed]

I have a Raspberry Pi 4B 8GB running non-stop under a fairly mild load. Among other things, it serves a somewhat large PostgreSQL DB, but the mean CPU usage rarely exceeds 25%. There is a Low-Profile ...
1
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1answer
71 views

Do i need a fan, or will ventilation holes suffice?

this setup has not yet been completed. I'm only asking so I can order a fan if needed I plan on connecting the following elements directly to my pi4- relay(i think I'll need two) small LED with ...
1
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1answer
977 views

Will thermal paste help in cooling down the CPU of my Pi 4 even further?

I have the latest Raspberry Pi 4 (8gb edition), I'm using my Pi as a server to host a website, and to host a Discord bot that is being used in more than ~800 servers right now. I overclocked my Pi, ...
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0answers
35 views

Does raspberry 4 need cooling? [duplicate]

I got RPi 4 (4GB), with official case and power supply, updated to latest eeprom BCM2711 detected Dedicated VL805 EEPROM detected BOOTLOADER: up-to-date CURRENT: Thu Apr 16 17:11:26 UTC 2020 (...
1
vote
1answer
964 views

Is it safe to connect a 3.3v fan to gpio instead of power? [duplicate]

I have a Raspberry Pi 4B and a fan. According to the instructions paper of the fan, it should be connected to a ground and a 3.3V power , or a ground and a 5V power. So I've used the former setup ...
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2answers
224 views

Cooling problem

I'm going to put my raspberry pi zero in a water/air tight box outdoors, but I'm worried that it might overheat with it preforming tasks all day and sitting in the sun. Considering that, I want a way ...
1
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1answer
832 views

Does this flat heat sink even work for cooling?

I bought a raspberry pi 4 case, and it came with these heat sinks you see in the picture + a fan. From the sizes, I guess the flat heat sink is for the CPU. I kind of find it hard to believe that this ...
1
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0answers
38 views

How to power RPi with fan from single source?

Electronics beginner here. I have Raspberry Pi 4 GB variant. I have the following power requirements: power a 5V cooling fan 12V cooling fan (a spare cooler master)thanks @Milliways safely (i.e. ...
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0answers
68 views

Finding source code for the Atmel MCU on the PoE Hat

I have recently purchased a raspberry pi 4. I have a small DC cooling fan for it, but I am limited to it being constantly on, which is annoying. I have seen (but do not need, or personally have access ...
-1
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3answers
206 views

Running RPi 3B without a fan or radiator [duplicate]

I am using my RPi 3B purely for feeding data Flightradar24 (with Pi24 installed instead of pure Raspbian). I assume that usage of electronics and overall load of the device is rather low. My ...
2
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0answers
142 views

Cooling Fan Hat?

The PoE hat has a built-in cooling fan, and even has drivers in Raspbian to automatically turn it on and off based on the CPU temperature. However, any guides to add a temperature-controlled fan seem ...
6
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2answers
2k views

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 ...
4
votes
4answers
8k views

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 ...
1
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1answer
34 views

Controlling array of fans

So I'm building a stack of Pi's and the case I'm buying comes with four fans. I want to use a Pi Zero (ideally, but whichever one will work is fine) to control all the fans but I have no clue if this ...
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0answers
63 views

Can I use the ALJ D882 transistor or SS8550 transistor to control the 5V fan on my raspberry pi 3?

Can I use the ALJ D882 transistor or SS8550 transistor to control a 5V fan on my Raspberry Pi 3? Fan is 5V 0.33A (fan from my old laptop). http://alltransistors.com/transistor.php?transistor=52900 - ...
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2answers
58 views

Running temperature options

I have new RPi 3B+ intended to run 24/7. I am looking to ensure it doesn't overheat, so am wondering whether having wired ethernet would make it run cooler than using the WiFi? The Pi is situated ...
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3answers
951 views

Raspberry Pi case ventilation necessary?

I have a Pi 3 B+ that I am using as a portable media server, and it can get quite warm. I need a case for it, and I have been looking at a few, however very few of them have any sort of ventilation. ...
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0answers
208 views

Used within a Pi-Top Notebook, does the Raspberry Pi 3 B+ run cooler than the Pi 3 B?

I've been thinking about upgrading from a B to a B+, so I went and looked at the Raspbian Stretch with Desktop download I recently used to set up a new SD card for my Pi-Top running the Model B. It is ...
2
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2answers
34k views

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. ...
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4answers
6k views

What cooling is the most effective for the RPi 3B+?

I've been doing some research with the new RPi 3B+, but have been struggling to find much information about effective cooling for overclocking. I have seen some solutions such as Heatsinks (small ...
3
votes
2answers
790 views

Cooling down the Raspberry Pi 3 in a Vacuum

I'm working on a small little project involving the Raspberry Pi 3 and the LSM9DS1 Breakout board from Adafruit. We plan to place the Pi and the sensor board in a high radiation environment (but ...
1
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1answer
317 views

Is it safe to paint the Raspberry Pi PCB and microchips to give it a different color, and if so, are there recommended products?

In the O'Reilly book "Raspberry Pi Hacks" there is Hack 40 "Make Your Pi Water-Resistant (Without a Case)" in which they describe how they make a Raspberry Pi temporarily water-resistant using ...
1
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1answer
829 views

Powering a 5 volt fan from GPIO

I found a 5 volt fan from an Acer laptop, and want to fit it to my Pi (sunon maglev fan GC055515VH-A). It has three wires - red, black, and yellow - why is that?! The unit does not state its ...
1
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1answer
258 views

Pigrrl 2 case and cooling fan

I know how to set up a fan on a Pi 3. But can I attach this fan to the GPIO under the Pi by soldering it and will it affect the PiTFT that is actually attached to the Pi GPIO on top? And could the ...
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1answer
1k views

Detect CPU slowdown due to overheating

How do you detect when the Pi is slowing down its clockspeed due to overheating? I know I can find the "current" CPU speed by running: sudo cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq ...
1
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1answer
165 views

does a heatsink for RPi3 processor needs to be exactly centered?

Does a heatsink for RPi 3 processor needs to be exactly centered ? It fell while I was "aiming" for the processor with the board in its case (I know, sloppy). Thankfully the thermal pasted heatsink ...
4
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4answers
958 views

Did I destroy my GPIO board?

I bought a 30mm DC fan to cool off my Pi. It worked just fine if I plugged it into the 5V and GND pins. However, I wanted it to be programmatically controlled, so I plugged it into pin #18 and GND. ...
1
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1answer
2k views

Will a USB powered fan cool my Pi 3 with a touchscreen attached and will it draw to much power?

I have seen tutorials that show a fan plugged into the USB port to cool the Pi, would this overload the Pi? Is it necessary to use a fan at all?
2
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3answers
187 views

Will a fan cool my Pi 3?

Will a fan cool my Pi 3 without heatsink? I'm using it for some hard-core gaming and it's heating up enough that the thermal warning comes up and I don't want to use heatsink because the case I've got ...
2
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3answers
9k views

Will 3.3v gpio work for a fan without hurting the pi?

Will it hurt the pi if I run a fan on the 3.3v gpio? I have a hdmi lcd screen on mine and I don't want to use the usb ports for a fan. I have a raspberry pi 3 by the way
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5answers
8k views

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 ...
0
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1answer
2k views

Raspberry PI 3 fan doesn't work

I have connected fan (5V, 0.2A) to raspberry pi 3 on pins 2 and 4. When I turn on raspberry, fan doesn't work. Does fan should start with turning on raspberry? Or I have to setup some configuration to ...
6
votes
4answers
46k views

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 ...
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4answers
2k views

do I need radiator for Raspberry PI 3 model B [duplicate]

I am going to build cluster with Raspberry Pi 3 Model B. I am going to buy dozen of raspberry. and I wanted to know if I need radiator too
10
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6answers
20k views

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 & ...
3
votes
2answers
1k views

Control USB fan via relay

I've just bought a usb fan to cool down my router during the summer as it gets very hot. However, since i don't need to keep it on continuously, i was thinking about a solution to automate its usage ...
4
votes
1answer
5k views

How does a Raspberry Pi deal with high temperature?

Is there a overheating protection circuit integrated into the Raspberry Pi like in desktop processors from Intel or AMD? When I did research about this question I just found vendor specification about ...
7
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1answer
4k views

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 ...
0
votes
1answer
800 views

How to add a fan to the Pi

I was reading about how to cool the raspberry pi, I plan to do so, however, some articles mentioned that I should use a buffer circuit rather than connecting it directly into the GPIO pins. What does ...
-2
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1answer
2k views

Raspberry Pi 24/7, does it need cooling?

I made a Minecraft server with a Pi 2. I overclocked it with raspi-config to something like "Medium". I intend to keep it running 24/7 without a case. Do I need a heat sink and a fan in this situation?...
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2answers
4k views

Automating my fan based off of the CPU temperature

I just got a fan for my Raspberry Pi 2 model B. It uses the GPIO pins. The fan works well but makes a lot of noise. I want to get the fan to switch on and off depending on the temperature of the pi. I'...