1. สูงกว่าview
The Waveshare PoE HAT (C) is a Power Over Ethernet (PoE) accessory designed for the Raspberry Pi 3B+ and Raspberry Pi 4B. It complies with the IEEE 802.3af/at PoE network standard, enabling both network connection and power supply to your Raspberry Pi through a single Ethernet cable. This HAT features 5V USB-A and 12V header outputs to support additional peripherals, an onboard active cooling fan for thermal management, and an MP8676 buck chip for stable power delivery.
Image 1.1: Waveshare PoE HAT (C) module, showcasing its components and compact design.
2. เนื้อหาบรรจุภัณฑ์
ตรวจสอบว่ามีรายการทั้งหมดอยู่ในแพ็คเกจ:
- PoE HAT (C) x1
- ฮีทซิงค์ x1
- Standoffs pack x1 (includes screws and spacers for mounting)
3. การตั้งค่า
Follow these steps to install the PoE HAT (C) onto your Raspberry Pi:
- เตรียม Raspberry Pi ของคุณให้พร้อม: โปรดตรวจสอบให้แน่ใจว่า Raspberry Pi 3B+ หรือ 4B ของคุณปิดเครื่องและถอดปลั๊กออกจากแหล่งจ่ายไฟแล้ว
- Attach the Heatsink: If not already installed, apply the provided heatsink to the main processor of your Raspberry Pi. Ensure proper contact for optimal heat dissipation.
- Mount the PoE HAT (C): Carefully align the 40-pin GPIO header of the PoE HAT (C) with the corresponding pins on your Raspberry Pi. Gently press down until the HAT is securely seated.
- Secure with Standoffs: Use the included standoffs and screws to firmly attach the PoE HAT (C) to your Raspberry Pi. This provides mechanical stability.
- ตรวจสอบการเคลียร์: Verify that the HAT does not interfere with any existing components or cases, especially if you are using a third-party case or larger heatsinks on your Raspberry Pi. Some larger heatsinks may require an 8.5mm GPIO extender for proper fit.
Image 3.1: The PoE HAT (C) installed on a Raspberry Pi, showing the connection to the 40-pin GPIO header.
4. คู่มือการใช้งาน
Once the PoE HAT (C) is installed, follow these steps for operation:
- เชื่อมต่อกับเครือข่าย PoE: Connect an Ethernet cable from a compliant IEEE 802.3af/at PoE network switch or injector to the Ethernet port of your Raspberry Pi. The PoE HAT (C) will draw power and provide network connectivity.
- การทำงานของพัดลม: The onboard cooling fan is designed for active cooling. It will automatically run upon power-up. A switch labeled 'FAN' (EN/DIS) is present on the HAT. Set it to 'EN' for automatic fan operation or 'DIS' to disable the fan.
- Utilize Output Ports:
- 5V USB-A Output: The USB-A port provides up to 5V 4A output, allowing you to power additional external devices while ensuring stable power to the Raspberry Pi.
- 12V Header Output: The 2-pin header provides a 12V 2A output, suitable for powering specific peripherals that require 12V.
Image 4.1: Diagram illustrating the connection of the Raspberry Pi with PoE HAT (C) to a PoE-enabled network switch.
ภาพที่ 4.2: รายละเอียด view of the 5V USB-A output port and the 12V 2-pin header on the PoE HAT (C).
Image 4.3: Close-up of the active cooling fan and the EN/DIS switch for fan control.
5. การบำรุงรักษา
The PoE HAT (C) is designed for low maintenance. Periodically inspect the cooling fan for dust accumulation. If necessary, gently clean the fan blades with a soft brush or compressed air to ensure optimal airflow and prevent overheating. Ensure all connections remain secure.
6 การแก้ไขปัญหา
- No Power to Raspberry Pi:
- Ensure the Ethernet cable is securely connected to both the PoE HAT (C) and a compliant IEEE 802.3af/at PoE switch or injector.
- Verify that your PoE power sourcing equipment (PSE) is active and providing power. The PoE input voltage must be between 37V and 57V DC. Note that 24V passive PoE is not supported.
- Check the connection of the HAT to the Raspberry Pi's GPIO header for proper seating.
- พัดลมไม่หมุนหรือไม่ส่งเสียง:
- Ensure the fan switch on the HAT is set to 'EN' for enabled operation.
- Check for any obstructions preventing the fan from spinning.
- If the fan is making excessive noise or stalling, it may indicate a defect. Contact support for assistance.
- HAT Does Not Fit with Existing Heatsinks/Case:
- Some larger Raspberry Pi heatsinks or cases may interfere with the HAT's components. Consider using a GPIO extender to provide additional clearance.
- External Devices Not Receiving Power from USB-A or 12V Header:
- Verify that the total power draw from the 5V USB-A and 12V header outputs does not exceed the maximum combined output of 25W.
- Ensure the external devices are correctly connected and functioning.
7. ข้อมูลจำเพาะ
| คุณสมบัติ | ข้อมูลจำเพาะ |
|---|---|
| ความเข้ากันได้ | ราสเบอร์รี่ Pi 3B+, ราสเบอร์รี่ Pi 4B |
| อินพุต PoE ฉบับที่tage | 37V ~ 57V กระแสตรง |
| มาตรฐานเครือข่าย | IEEE 802.3af/at PoE compliant |
| 5V USB-A Output | 5V 4A (สูงสุด) |
| 12V Header Output | 12V 2A (สูงสุด) |
| Total Output Power (12V+5V) | 25W (สูงสุด) |
| ชิปออนบอร์ด | MP8676 Buck Chip (up to 4.5A output for Pi and USB-A) |
| การทำให้เย็น | Active cooling fan with EN/DIS switch |
| ขนาด | 56.5 × 65 มม. (2.22 x 2.56 นิ้ว) |
Image 7.1: Outline dimensions of the Waveshare PoE HAT (C) in millimeters.
8. การสนับสนุน
For further assistance, technical documentation, or if you encounter any issues not covered in this manual, please contact Waveshare customer support. Development resources are available upon request.
