ZP-0138

Aluminum Brick Case

• Purchase URL [ https://52pi.com/products/raspberry-pi-4-model-b-aluminum-brick-case-black-enlosure-shell-with-4010-low-profile-ice-tower-cooling-fan-for-rpi-4b ]

Descriptions

It is aluminum Brick Case which is supporting Raspberry Pi 4 model B ONLY. It can protect the Raspberry Pi well and dissipate heat well through adjustable-speed fan.

We strongly recommend using the official Raspberry Pi operating system, which can directly configure the fan to adjust the speed according to the CPU temperature through the raspi-config command.

Other operating systems may require you to write software yourself and send PWM signals to the fan through GPIO pins to control fan’s speed.

NOTE: Raspberry Pi 4B is not included in the package, require additional purchase.

Features

• Easy to assemble
• Acrylic Top Cover
• Ultra-Quiet Cooling Fan
• Adjustable Speed (PWM)
• Precise Positioning
• Beautiful and Stable
• Support Raspberry Pi 4 model B Only

Galley

• Product Outlook

\* Features

• Cooling System detials

\* Pinout of Fan connection \* Dimentions

Package Includes

• 1 x Aluminum Brick case
• 1 x Acrylic Top cover
• 1 x Aluminum bottom cover
• 1 x 3510 Ultra-Quiet Cooling Fan
• 4 x Copper pillar
• 2 x M2.5 Nut
• 4 x M2.5 Flat head screw
• 2 x Thermal Pad
• 1 x hex wrench
• 4 x Hexagon socket head screw for Top cover
• 2 x Rubber anti-slipper pad
• 1 x Instructions

How to assemble

• 1. Fix 3510 Ultra-quiet Cooling Fan as following figure
• 2. Conect fan cable to GPIO Pin:

 ** Connect the red wire from Fan to 5V Pin on Raspberry Pi 4B’s GPIO Pin  ** Connect the black wire from fan to GND Pin on Raspberry Pi 4B’s GPIO Pin  ** Connect the Blue wire from fan to GPIO14 Pin on Raspberry Pi 4B’s GPIO Pin

• 3. Insert Raspberry Pi 4B and 3510 Ultra-Quiet Cooling Fan into the case, and fix it with M2.5 Flat head screws.
• 4. Fix the aluminum bottom cover to case with M2.5 flat head screws.
• 5. Peeling off the protect film from Acrylic Top Cover and fix it with hexagon socket screws.
• 6. Paste the rubber anti-slipper pad on the bottom of the case.

How to configure PWM Fan

We are assume that you are using Raspberry Pi OS (Official).

• 1. Press Ctrl+ ALT + T or click terminal Icon to open a terminal and typing: “sudo raspi-config”

\* 2. Navigate to **4 Performance Options** \* and navigate to **P4 Fan** and select YES. \* Keep **14** as default. \* select yes, input a temperature in degrees should the fan turn on, Recommend setting to **60** degrees. \* select yes and reboot your Raspberry Pi. \* If you are using other OS on Raspberry Pi, please refer to how to generate PWM signal in your OS.

Demo Code

• Here is a demo code, it will help you to control the fan speed according to the temperature of CPU.

#File Name: fan_control.py
#!/usr/bin/python3

import RPi.GPIO as GPIO
import time
import subprocess

GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
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)) >= 45:
            dc = 100
            pwm.ChangeDutyCycle(dc)
            print("CPU Temp:",float(temp)," Fan duty cycle:",dc)
            time.sleep(180.0)
        if round(float(temp)) >= 40:
            dc = 85
            pwm.ChangeDutyCycle(dc)
            print("CPU Temp:",float(temp)," Fan duty cycle:",dc)
            time.sleep(120.0)
        else:
            dc = 70
            pwm.ChangeDutyCycle(dc)
            print("CPU Temp:",float(temp)," Fan duty cycle:",dc)
            time.sleep(60.00)

except KeyboardInterrupt:
    pwm.stop()
    GPIO.cleanup()
print("Ctrl + C pressed -- Ending program")

• Save it and execute it in a terminal:

python3 fan_control.py

Keywords

• Aluminum breck case for Raspberry Pi 4B, aluminum case for raspberry pi 4B, breck case.