RPiFEBP

Revision

• 2021-09-26:V1.0

Software update date

• 2024-08-02:V1.0

Descriptions

RPiFEBP stands for Raspberry Pi Fan Expansion Board Plus. It is a fan expansion board with 0.91 OLED Display and 4007 PWM Fan onboard, 4 programable LED indicators under the PCB board.

Features

• 0.91 inch OLED Display(support I2C protocol)
• Speed Adjustable Fan (PWM FAN)
• Programable LED Indicator
• Raspberry Pi Hat Style

How to Assemble.

• Just insert it into Raspberry Pi 40Pin Header.

How to Setup Fan

• Recommend OS: Raspberry Pi OS (Buster) or later.
• Requirements:

• SSD1306 library for OLED - recommended using "luma.oled" library
• SMBUS library for I2C device control
• wiringPi library for LED indicators control(Deprecated)
• RPi.GPIO library for LED indicators control(Recommended)

• Open a terminal and typing:

sudo raspi-config

Navigate to 4 Performance Options -> Fan -> YES -> 14(to which GPIO is the fan connected) -> 60 (Temprature trigger) -> yes -> reboot

• Or you can write C code or python script to generate PWM wave and send it to GPIO 14(BCM14) to control the Fan speed as your will.

How to Setup OLED Display

• Enable I2C interface

sudo raspi-config`

Navigate to Interface Options -> I2C -> Enable -> YES.

• Detect If OLED has been recognized.

i2cdetect -y 1

It will shows an address: 0x3c

LED indicators Pin out

There are 4 LED under the PCB board.

• LED1 - nearby the GPIO pins and fan on left corner, connect to GPIO 24 (BCM 19)
• LED2 - under LED1, connect to GPIO 23 (BCM 13)
• LED3 - on the right of LED2, connect to GPIO 22 (BCM 6)
• LED4 - on the top of LED3, connect to GPIO 21 (BCM 5)

Installation

• Please refer to: 52Pi wiki

Install by copy paste

• Enable I2C
• Install dependencies libraries.

sudo apt update 
sudo apt upgrade -y
sudo apt -y install python3 python3-dev python3-pip python3-pil libjpeg-dev zlib1g-dev libfreetype6-dev liblcms2-dev libopenjp2-7 
sudo pip install --upgrade luma.oled --break-system-packages
sudo usermod -a -G gpio,i2c pi  
git clone https://github.com/rm-hull/luma.examples.git 
cd luma.examples/
sudo -H pip install -e . --break-system-packages
sudo -H pip installl psutil --break-system-packages 

• clone the repository:

cd ~
git clone https://github.com/geeekpi/RPiFEBP.git
cd RPiFEBP/
./install.sh

• That's it,have fun!