PoE HAT (B)

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PoE HAT (B)
PoE HAT (B)

Power Over Ethernet HAT (Type B) For Raspberry Pi 3B+/4B, 802.3af Power-Sourcing Equipment Required
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Brand: Waveshare
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Chinese: 中文网站
Onboard Interfaces
I2C RPi
Related Products

Instroduction

This Power Over Ethernet HAT (Type B) is designed for Raspberry Pi 3B+/4B, it supports 802.3af Power-Sourcing equipment for PoE function.

Features

  • Standard Raspberry Pi 40PIN GPIO header, supports Raspberry Pi 3B+/4B
  • PoE (Power Over Ethernet) capability,802.3af-compliant
  • Fully isolated switched-mode power supply (SMPS)
  • 0.91" OLED, for monitoring processor temperature, IP address, and fan status in real-time
  • Onboard cooling fan, allows auto running on powerup OR programmable control, configured by the switch
  • Integrates PCF8574 IO expander for I2C bus, providing pin P0 for directly fan control, and more spare IO pin

Specifications

  • PoE Power input: 37V ~ 57V DC in
  • PoE Power output: 5V 2.5A DC out
  • Network standard: 802.3af PoE
  • Dimensions: 56.5mm x 65mm
  • OLED size: 0.91inch
  • OLED pixels: 128x32
  • OLED driver: SSD1306
  • OLED display color: White

Examples

Hardware connection

You need to connect the PoE HAT to Raspberry Pi as picture
PoE-HAT-B-details-5.jpg

Libraries installation

Open the terminal of Raspberry Pi and install libraries as guides below

Install WiringPi Library

cd
sudo apt-get install wiringpi
wget https://project-downloads.drogon.net/wiringpi-latest.deb
sudo dpkg -i wiringpi-latest.deb
gpio -v

Install C Library bcm2835

cd
wget http://www.airspayce.com/mikem/bcm2835/bcm2835-1.60.tar.gz
tar zxvf bcm2835-1.60.tar.gz 
cd bcm2835-1.60/
sudo ./configure
sudo make && sudo make check && sudo make install

For more information and the newest libraries please refer to website:http://www.airspayce.com/mikem/bcm2835/

Install Python Library

For python2
cd
sudo apt-get update
sudo apt-get install python-pip
sudo pip install RPi.GPIO
For python3
cd
sudo apt-get update
sudo apt-get install python3-pip
sudo pip install RPi.GPIO

Download example

Open a terminal and download with commands below.

cd
sudo apt-get install p7zip-full
wget https://www.waveshare.com/w/upload/b/b7/PoE_HAT_B_code.7z
7z x PoE_HAT_B_code.7z -r -o./PoE_HAT_B_code

Run the example

Open a terminal and run the example

C
cd ~/PoE_HAT_B_code/c/
make clean 
make
sudo ./main
python
cd ~/PoE_HAT_B_code/python/
sudo python main.py

Set the temperature threshold

C
sudo nano ~/PoE_HAT_B_code/c/examples/main.c

Modify the last parameter of POE_HAT_Display() and save

python
sudo nano ~/PoE_HAT_B_code/python/examples/main.py

Modify the last parameter of POE.POE_HAT_Display() and save

Auto-run

Modify rc.local file

sudo nano /etc/rc.local
  • Add the following line in front of the line exit 0
fi
sudo /home/pi/PoE_HAT_B_code/c/main &
#exit 0

Resources

Documents

Example

Support

Mail.png Contact your seller (fast response and most recommended)

or send emails to [email protected] (not fast enough but please be patient) for help.

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