POE Node Build Guide
This guide covers the recommended hardware configurations for POE-powered nodes in the Freq51 mesh network. These builds are designed for infrastructure deployment at high-level repeater sites and valley-level client sites.
Build Configurations
We have two primary POE node configurations:
- Raspberry Pi 4B - Higher performance option with integrated POE
- Raspberry Pi Zero 2W - Compact, cost-effective option
Both configurations support cavity filtering for high-level repeater sites where interference management is critical.
Configuration 1: Raspberry Pi 4B Build
High-Performance Build
Total Cost: ~$275
This configuration uses the Raspberry Pi 4B, with integrated POE Hat, to ensure future compatibility and the ability to run new meshtastic services in the future.
Parts List
Base Components (All Sites)
| Component | Price | Link |
|---|---|---|
| Raspberry Pi 4B | $40.00 | Adafruit |
| Nebra LORA Hat | $25.00 | TBA |
| Waveshare POE Hat | ~$25.00 | Amazon |
| PNY 64GB PRO Elite High Endurance SD Card | $10.00 | Amazon |
| RAK Outdoor Enclosure | $60.00 | Rokland |
| Gizont 45cm Antenna | $26.95 | AliExpress |
| SMA Male to N Female Bulkhead | $6.00 | Amazon |
Base Total: $192.95
Additional Components for Cavity Filter (High-Level Sites Only)
| Component | Price | Link |
|---|---|---|
| SMA Male to SMA Male Pigtail | $2.00 | TBA |
| Cavity Filter | $80.00 | TBA |
Filtered Build Total: $274.95 (Base + Cavity Filter components)
Configuration 2: Raspberry Pi Zero 2W Build
Recommended Budget Build
Total Cost: ~$234
This configuration uses the Raspberry Pi Zero 2W with a POE adapter for a compact, affordable deployment.
Parts List
Base Components (All Sites)
| Component | Price | Link |
|---|---|---|
| Raspberry Pi Zero 2W | $15.00 | DigiKey |
| Nebra LORA Hat | $25.00 | TBA |
| POE Adapter | ~$9.00 | Amazon |
| PNY 64GB PRO Elite High Endurance SD Card | $10.00 | Amazon |
| RAK Outdoor Enclosure | $60.00 | Rokland |
| Gizont 45cm Antenna | $26.95 | AliExpress |
| SMA Male to N Female Bulkhead | $6.00 | Amazon |
Base Total: $151.95
Additional Components for Cavity Filter (High-Level Sites Only)
| Component | Price | Link |
|---|---|---|
| SMA Male to SMA Male Pigtail | $2.00 | TBA |
| Cavity Filter | $80.00 | TBA |
Filtered Build Total: $233.95 (Base + Cavity Filter components)
Alternative Component Options
Enclosures
- Nebra Enclosure: $32.06 - AliExpress (missing plugs)
- NEMA Steel Enclosure: $29.99 - Amazon (unproved for weather resistance, will need a custom mounting solution)
- NEMA ABS Enclosure: $21.99 - Amazon (plastic)
Antennas
- Gizont 45cm: $26.95 - AliExpress - Recommended
- ALFA AOA-915-5ACM 5dBi: $17.97 - Rokland
Lightning Protection
- Proxicast Coaxial Lightning Arrester: $19.95 - Amazon
Pigtails
- IPEX/u.fl to N Type Female: $6.00 - Amazon
- SMA Male to N Female Bulkhead: $6.00 - Amazon
Assembly Notes
- POE Power: Use the appropriate POE adapter for the Zero 2W or integrated POE Hat for the 4B
- Cavity Filters: Strongly encouraged for all high-level repeater sites to make it easier to hear quieter nodes.
- Weatherproofing: Ensure all cable entries are properly sealed, using something like Permatex
- Grounding: Proper grounding is essential for lightning protection
- SD Card: Use high-endurance cards rated for continuous operation