52Pi EP-0152 Raspberry Pi Fan Expansion Board - UPDATED for Raspberry Pi 5

Updated source code for the 52Pi EP-0152 Raspberry Pi Fan Expansion Board, sold on Amazon as GeeekPi Fan Hat for Raspberry Pi 4 Model B, PWM Fan GPIO Expansion Board with 0.91inch OLED Display for Raspberry Pi 4B/3B+/3B/2B.

The original code listed for the fan hat is woefully out of date, as it won't work for the Raspberry Pi 5 and doesn't use the PEP 668 specification, which is now required for Rasberry Pi OS.

This repository is compatible with the following Raspberry Pi versions on Raspberry Pi OS (64-bit) / Debian GNU/Linux 12 (bookworm):

• Raspberry Pi 5B ( ✅ - Tested)
• Raspberry Pi 4B ( ✅ - Tested)
• Raspberry Pi 3B+/3B ( ❓ - Untested)
• Raspberry Pi 2B ( ❓ - Untested)

Assembly Steps

Python Requirements

1. Create a Python Virtual Environment to install pip packages.

   sudo -i
   python3 -m venv /opt/EP-0152
   source /opt/EP-0152/bin/activate

2. Install pip3 packages:

   pip3 install board pillow adafruit_circuitPython_ssd1306

   • For Raspbery Pi 5:

     pip3 uninstall RPI.GPIO
     pip3 install rpi-lgpio

3. Remember to exit from sudo -i:

   exit

Fan Control

I've added @franganghi's version of Raspberry-Pi5-PWM-Fan-Control as a submodule to this repository. To pull the submodule after cloning this repository, run:

cd EP-0152
git submodule update --init --recursive

After doing so, follow the instructions listed in the README to install as a Linux service.

PWM LEDs

LEDs Installation

cd EP-0152/LEDs
sudo mkdir /opt/EP-0152/LEDs
sudo cp ep0152ledpwm.service /lib/systemd/system/ep0152ledpwm.service
sudo cp LEDsV2.* /opt/EP-0152/LEDs/.
sudo chmod 644 /lib/systemd/system/ep0152ledpwm.service
sudo chmod +x /opt/EP-0152/LEDs/LEDsV2.py
sudo chmod +x /opt/EP-0152/LEDs/LEDsV2.sh
sudo systemctl daemon-reload
sudo systemctl enable --now ep0152ledpwm.service

LEDs Check Status

$ sudo systemctl status ep0152ledpwm.service
● ep0152ledpwm.service - EP-0152 LEDs PWM Pulse
     Loaded: loaded (/lib/systemd/system/ep0152ledpwm.service; enabled; preset: enabled)
     Active: active (running) since Fri 2024-06-21 10:34:34 PDT; 1h 13min ago
   Main PID: 2701 (LEDsV2.sh)
      Tasks: 5 (limit: 9248)
        CPU: 3.627s
     CGroup: /system.slice/ep0152ledpwm.service
             ├─2701 /bin/bash /opt/EP-0152/LEDs/LEDsV2.sh
             └─2710 python3 /opt/EP-0152/LEDs/LEDsV2.py

Jun 21 10:34:34 host systemd[1]: Started ep0152ledpwm.service - EP-0152 LEDs PWM Pulse.

LEDs Uninstallation

sudo systemctl stop ep0152ledpwm.service
sudo systemctl disable ep0152ledpwm.service
sudo systemctl daemon-reload
sudo rm /lib/systemd/system/ep0152ledpwm.service
sudo rm -rf /opt/EP-0152/LEDs

OLED Screen

Credit to @AmazonShopper for providing the edits to the original code.

OLED Installation

cd EP-0152/OLED
sudo mkdir /opt/EP-0152/OLED
sudo cp ep0152oled.service /lib/systemd/system/ep0152oled.service
sudo cp oledV2.py /opt/EP-0152/OLED/.
sudo cp OLED.sh /opt/EP-0152/OLED/.
sudo chmod 644 /lib/systemd/system/ep0152oled.service
sudo chmod +x /opt/EP-0152/LEDs/oledV2.py
sudo chmod +x /opt/EP-0152/LEDs/OLED.sh
sudo systemctl daemon-reload
sudo systemctl enable --now ep0152oled.service

OLED Check Status

$ sudo systemctl status ep0152oled.service
● ep0152oled.service - EP-0152 OLED Monitor
     Loaded: loaded (/lib/systemd/system/ep0152oled.service; enabled; preset: enabled)
     Active: active (running) since Fri 2024-06-21 10:34:34 PDT; 1h 18min ago
   Main PID: 2703 (OLED.sh)
      Tasks: 2 (limit: 9248)
        CPU: 1min 729ms
     CGroup: /system.slice/ep0152oled.service
             ├─2703 /bin/bash /opt/EP-0152/OLED/OLED.sh
             └─2711 python3 /opt/EP-0152/OLED/oledV2.py

Jun 21 10:34:34 host systemd[1]: Started ep0152oled.service - EP-0152 OLED Monitor.

OLED Uninstallation

sudo systemctl stop ep0152oled.service
sudo systemctl disable ep0152oled.service
sudo systemctl daemon-reload
sudo rm /lib/systemd/system/ep0152oled.service
sudo rm -rf /opt/EP-0152/OLED

Uninstallation of Python VEnv

sudo rm -rf /opt/EP-0152