Tall Aluminium Heatsink & Fan for Raspberry Pi Compute Module 4 (CM4)

SKU: CE08375 Brand: The Pi Hut
This tall heatsink + programmable fan combo for the Raspberry Pi Compute Module 4 is the ideal choice for those looking for the ultimate cooling aid for...
$20.65 AUD, inc GST
$18.77 AUD, exc GST

In stock, ships same business day if ordered before 2PM
Delivered by Mon, 25th of Nov

Quantity Discounts:

  • 10-25 $18.21 (exc GST)
  • 25+ $17.84 (exc GST)
- +

7 from local stock, 1 supplier stock; your order will dispatch between Dec 1 to Dec 10. And yes, stock levels and lead times are accurate!

Shipping:

  • $7+ Standard (5+ days*, tracked)
  • $11+ Express (2+ days*, tracked)
  • FREE Pickup (Newcastle only - must order online*)

Shipping costs may increase for heavy products or large orders.

Exact shipping can be calculated on the view cart page.

*Conditions apply, see shipping tab below.

Description

This tall heatsink + programmable fan combo for the Raspberry Pi Compute Module 4 is the ideal choice for those looking for the ultimate cooling aid for their CM4 whilst having control over fan noise via code.

Standing at 17mm tall (from the base mounting points), this unit will cool your CM4 silently until your set temperature threshold, at which point the fan will kick in as the heatsink's trust sidekick! The CM4 heatsink comes with fixings, thermal tape and a mini-screwdriver.

The fan has three wires, 5V, GND and a signal wire that is intended for GPIO18 (Physical pin 12) to allow PWM (code) control of the fan speed/activity. The heatsink is intended to be installed on the Raspberry Pi Compute Module 4 IO board as this provides a pin connection.

Features

  • Designed for the Compute Module 4
  • Ultimate cooling with both a heatsink and fan
  • Easy to install
  • CNC machining
  • Excellent heat dissipation
  • Adjustable speed fan

Package Contents

  • 1 x Aluminum Alloy CNC Heat Sink with Fan for Raspberry Pi CM4 Module
  • 1 x Screw Driver
  • 4 x M2.5 Screw
  • 4 x M2.5 Nuts
  • 4 x Thermal Pad

CM4 and IO board not included

Assembly

  • Apply the thermal pads to the CM4 module
  • Fix the heatsink as per the image below
  • Fit the CM4 module into the IO board
  • Connect the Red wire to 5V on GPIO Pin
  • Connect the Black wire to GND on GPIO Pin
  • Connect the Blue wire to GPIO14 (TXD) on GPIO Pin (physical pin 8)
  • NOTE: Please beware of the direction of the screws and nuts

Raspberry Pi Compute Module 4 heatsink and fan assembly

Enable Automatic Fan Adjustment

  • Turn on Raspberry Pi and log in
  • Open a terminal and type:
sudo raspi-config
  • Navigate to (4) Performance Options > P4 Fan and select YES > Input or keep it as 14 > OK > input temperature in degrees should the fan turn on, for example: I'd like to turn on the fan when the temperature reacheds 65 degrees, input 65 and press Enter

Enabling the Fan via Programming

  • Make sure the RPi.GPIO library has been installed
 pip freeze |grep RPi.GPIO 
  • If the feedback is similar to below (showing a version number), it means the library is installed:

RPi.GPIO==0.7.0
  • Open a terminal and create a file named: pwm-fan-control.py
  • Copy and paste the following code into the file and save it:
import RPi.GPIO as GPIO import time import subprocess  GPIO.setmode(GPIO.BCM) GPIO.setup(14, GPIO.OUT) pwm = GPIO.PWM(14,100)  print("\nPress Ctrl+C to quit \n") dc = 0 pwm.start(dc)  try:     while True:         temp = subprocess.getoutput("vcgencmd measure_temp|sed 's/[^0-9.]//g'")         if round(float(temp)) >= 65:             dc = 100             pwm.ChangeDutyCycle(dc)             time.sleep(0.05)         else:             dc = 0             pwm.ChangeDutyCycle(dc)             time.sleep(0.05) except KeyboardInterrupt:     pwm.stop()     GPIO.cleanup()     print("Ctrl + C pressed -- Ending program")
  • Execute it by typing:
python3 pwm-fan-control.py 
  • The fan will turn on when the CPU temperature reaches 65 degrees

This product is listed in:

Components & Parts>Fans and Propellers

Product Comments

Exact shipping can be calculated on the view cart page (no login required).

Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).

We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):

  • $3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
  • $7+ for Standard Post (typically 6+ business days, tracked)
  • $11+ for Express Post (typically 2+ business days, tracked)
  • Pickup - Free! Only available to customers who live in the Newcastle region (must order online and only pickup after we email to notify you the order is ready). Orders placed after 2PM may not be ready until the following business day.

Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

Some batteries (such as LiPo) can't be shipped by Air. During checkout, Express Post and International Methods will not be an option if you have that type of battery in your shopping cart.

International Orders - the following rates are for New Zealand and will vary for other countries:

  • $12+ for Pack and Track (3+ days, tracked)
  • $16+ for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount will increase based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

Have a product question? We're here to help!

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