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Raspberry Pi POE HAT

Raspberry Pi POE HAT Raspberry Pi POE HAT
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Input Voltage

37-57V (IEEE 802.3af POE standard)

Output Voltage

5V

Output Current

Up to 2.5A

Efficiency

Up to 95%

Operating Temperature

0C to 50C

Dimensions

65mm x 56.5mm x 12mm

Certifications and Compliance

IEEE 802.3af POE compliant

CE and FCC certified

Warranty and Support

The Raspberry Pi POE HAT is backed by a one-year limited warranty and dedicated technical support from the manufacturer.

Documentation and Resources

For more information, including datasheets, user manuals, and technical guides, please visit the manufacturer's website or consult with the Raspberry Pi documentation repository.

By providing a convenient and reliable power solution, the Raspberry Pi POE HAT is an excellent addition to any IoT project or application that requires a robust and efficient power supply.

Pin Configuration

  • Raspberry Pi POE HAT Pinout Documentation
  • The Raspberry Pi POE HAT is a Power over Ethernet (PoE) add-on board designed for Raspberry Pi single-board computers. It allows the Raspberry Pi to receive power and data over a single Ethernet cable, eliminating the need for a separate power adapter. Here is a detailed explanation of the pins on the Raspberry Pi POE HAT, along with guidance on how to connect them:
  • POE HAT Pinout:
  • 1. ETH_POE+ (Pin 1)
  • Function: Positive Power over Ethernet (PoE) input
  • Description: Receives power from the PoE-enabled Ethernet switch or injector
  • Connection: Connect to the PoE-enabled Ethernet switch or injector using a Cat5e or higher Ethernet cable
  • 2. ETH_POE- (Pin 2)
  • Function: Negative Power over Ethernet (PoE) input
  • Description: Receives power from the PoE-enabled Ethernet switch or injector
  • Connection: Connect to the PoE-enabled Ethernet switch or injector using a Cat5e or higher Ethernet cable
  • 3. GND (Pin 3)
  • Function: Ground
  • Description: Provides a common ground reference point for the HAT
  • Connection: Connect to the Raspberry Pi's GND pin or the ground of the power supply
  • 4. 3.3V (Pin 4)
  • Function: 3.3V power output
  • Description: Supplies 3.3V power to the Raspberry Pi
  • Connection: Connect to the Raspberry Pi's 3.3V power pin
  • 5. EN (Pin 5)
  • Function: Enable signal
  • Description: Enables the PoE power supply when high
  • Connection: Connect to the Raspberry Pi's GPIO pin (e.g., GPIO17) to control the PoE power supply
  • 6. VBUS (Pin 6)
  • Function: USB bus voltage
  • Description: Supplies power to the USB peripherals
  • Connection: Connect to the Raspberry Pi's USB bus voltage pin
  • 7. INT (Pin 7)
  • Function: Interrupt signal
  • Description: Indicates when the PoE power supply is available
  • Connection: Connect to the Raspberry Pi's GPIO pin (e.g., GPIO23) to detect the PoE power supply availability
  • 8. NC (Pin 8)
  • Function: Not Connected
  • Description: Not used by the POE HAT
  • Connection: Leave unconnected
  • 9. NC (Pin 9)
  • Function: Not Connected
  • Description: Not used by the POE HAT
  • Connection: Leave unconnected
  • 10. NC (Pin 10)
  • Function: Not Connected
  • Description: Not used by the POE HAT
  • Connection: Leave unconnected
  • 11. RJ45 (Pins 11-14)
  • Function: Ethernet connector
  • Description: Connects to the Ethernet cable
  • Connection: Connect the RJ45 connector to the Ethernet cable
  • 12. Status LEDs (Pins 15-16)
  • Function: Status indicators
  • Description: Indicates the PoE power supply status (green) and activity (yellow)
  • Connection: Connect the Status LEDs to the Raspberry Pi's GPIO pins (e.g., GPIO24 and GPIO25) to control the LEDs
  • Important Notes:
  • Ensure proper connections to the PoE-enabled Ethernet switch or injector to avoid damage to the Raspberry Pi or the POE HAT.
  • Use a Cat5e or higher Ethernet cable to connect the RJ45 connector to the Ethernet switch or injector.
  • Configure the Raspberry Pi's GPIO pins according to the connections specified above.
  • Consult the Raspberry Pi documentation for specific pinouts and configuration guidelines.
  • By following this pinout guide, you can successfully connect and use the Raspberry Pi POE HAT to enable Power over Ethernet capabilities on your Raspberry Pi project.

Code Examples

Raspberry Pi POE HAT Documentation
Overview
The Raspberry Pi POE (Power over Ethernet) HAT is a peripheral module designed for Raspberry Pi single-board computers. It enables the Raspberry Pi to receive power and data over a single Ethernet cable, eliminating the need for a separate power supply. This HAT is compatible with Raspberry Pi 3, 3+, 4, and 400 models.
Features
IEEE 802.3af compliant
 Supports up to 2.5W of power
 Isolated switching regulator for stable power supply
 Short-circuit and over-voltage protection
 Compatible with Raspberry Pi 3, 3+, 4, and 400 models
Connecting the POE HAT
To use the POE HAT, simply attach it to the Raspberry Pi's 40-pin GPIO header. Make sure to align the pins carefully to avoid damage.
Example 1: Using the POE HAT with Raspberry Pi OS
In this example, we will demonstrate how to use the POE HAT with the Raspberry Pi OS to power the Raspberry Pi over Ethernet.
Hardware Requirements
Raspberry Pi (3, 3+, 4, or 400 model)
 POE HAT
 Ethernet cable
 POE-enabled network switch or injector
Software Requirements
Raspberry Pi OS (latest version)
Steps
1. Connect the POE HAT to the Raspberry Pi's 40-pin GPIO header.
2. Connect the Ethernet cable to the POE HAT and the other end to a POE-enabled network switch or injector.
3. Power on the Raspberry Pi.
4. The Raspberry Pi will receive power over Ethernet, and the OS will boot up normally.
Example 2: Using the POE HAT with Python to Monitor Power Status
In this example, we will use Python to monitor the power status of the POE HAT.
Hardware Requirements
Raspberry Pi (3, 3+, 4, or 400 model)
 POE HAT
 Ethernet cable
 POE-enabled network switch or injector
Software Requirements
Raspberry Pi OS (latest version)
 Python 3.x (pre-installed on Raspberry Pi OS)
Python Code
```python
import os
import subprocess
# Get the power status of the POE HAT
power_status = subprocess.check_output(["cat", "/sys/class/net/eth0/power/poemode"])
# Print the power status
if power_status.decode("utf-8").strip() == "2":
    print("POE power mode: Enabled")
else:
    print("POE power mode: Disabled")
```
Explanation
In this example, we use the `subprocess` module to execute the `cat` command to read the `/sys/class/net/eth0/power/poemode` file, which indicates the power status of the POE HAT. The `poemode` file contains a value of `2` when the POE power mode is enabled, and `1` when it's disabled. We then print the power status to the console.
Note: Make sure to run the Python script with root privileges using `sudo` to access the system files.
These examples demonstrate the basic usage of the Raspberry Pi POE HAT. You can explore more advanced applications, such as using the POE HAT with IoT projects, remote monitoring, and automation, by leveraging the Raspberry Pi's GPIO pins and Python programming.