AntiHunter DIGI Node PCB

• Featured in Seeed Studio's Best 20 XIAO Projects of 2025.
• Distributed Perimeter Defense & Wireless Threat Monitoring — bare board for builders, source your own parts.
• Skill level: beginner-intermediate: through-hole soldering, module flashing. Full illustrated assembly manual provided.
• New to hardware? The assembled node and full parts kit include everything. This listing is the PCB only.

Physical & digital tripwire that learns your environment

AntiHunter is a distributed 2.4 GHz signal-intelligence node. Every network, phone, laptop, and drone within range is broadcasting — it reads all of it, learns what belongs on your ground, and trips the instant something doesn't:

• A new device lingering at your fence line.
• A drone entering your airspace, with its pilot's location.
• An attack on your network, named down to the tool that launched it.
• A hand on the node itself

One node is a standalone sensor with its own dashboard. Three nodes talking over LoRa mesh — kilometers apart, no internet, no cellular — become a distributed perimeter that can put a hostile transmitter on a map.

Learn more on the website

What it detects

• Target Scan — watchlist of MACs, OUI prefixes, or SSIDs; instant mesh alert on a hit
• Device Scanner — every WiFi and BLE device in range: RSSI, name, and channel on WiFi
• Probe Request Scanner + Ghost SSIDs — the networks devices silently call out for, flagged when no AP answers during the scan: home, work, travel history
• Baseline Anomaly Detection — learns normal, then flags new devices and sustained RSSI shifts
• MAC Randomization Correlation — behavioral fingerprinting links rotating addresses to one persistent identity; 256 identities, 128 MACs each (experimental)
• Deauth Attack Detection — real-time deauth/disassoc with source tracking
• Sentinel Counterintel — names the tool behind an attack; deauth/beacon/auth floods, SAE DoS, karma, evil-twin, handshake capture — each detector toggleable (beta)
• Drone RID Detection — ODID/ASTM F3411 + French ID: drone ID, pilot location, telemetry
• Triangulation — 3+ GPS nodes estimate a target's approximate position: Kalman-filtered, GPS-weighted, confidence-scored, map pin (experimental)

Set & forget operation

• LoRa mesh (Meshtastic) — alerts, commands, and coordination across kilometers; every mode controllable per-node or broadcast
• Tamper + secure wipe — vibration-armed or remote token-authed erase of SD + NVS, leaving only a decoy weather-monitor file as cover
• Battery Saver, Target Allowlist, Data Explorer — sip power, skip known gear on target scans, audit every SD log
• Three ways to drive it — web dashboard, mesh commands (fully headless), or HTTP/JSON API

Why AntiHunter

• No subscription. No cloud. No account. Your data lives on your SD card. A comparable enterprise RF sensor runs ~$15,000, a fixed multi-sensor site runs $120,000+, and the license isn't optional — the hardware stops working without it. Each still covers only a slice of what one node does.
• Defensive by design. Built for lawful, authorized use: AntiHunter does not attack or disrupt RF.
• Open source (AGPL-3.0): firmware, 3D print files, and C2. Browser flasher, stable and beta channels.

How it compares

Public estimates & vendor datasheets, July 2026. "—" = not advertised.

Who is this for?

• Know who's around before they knock — learns which devices belong, alerts the moment a new one appears.
• Catch drones before they catch you — Remote ID detection with pilot location and telemetry.
• See through the tricks — persistent identity across MAC randomization via behavioral fingerprinting.
• Hunt the hunters — deauth, floods, evil-twin, and tool identification via Sentinel.
• Cover ground without infrastructure — LoRa mesh over kilometers; headless operation; TAK integration via C2.
• Protect what you've collected — arm the tamper trip or wipe by radio; the card is left holding only a weather-monitor cover note.

PCB specifications

What's included

One AntiHunter DIGI Node PCB.

You supply

CORE COMPONENTS

• 1x Seeed Studio XIAO ESP32-S3 (8 MB flash min)
• 1x Heltec WiFi LoRa 32 V3.2 (T114 compatible, V3.2 preferred)
• 1x ATGM336H GPS module
• 1x Micro SD card adapter module (SPI)
• 1x SD card (FAT32, 16 GB recommended)
• 1x SW-420 vibration sensor
• 1x DS3231 RTC module

FULL BUILD — CONNECTORS & FASTENERS

• 6x JST 2.54 2-pin terminals (2.0 mm JST also fits)
• 10x M3 mounting inserts
• 2x M3x15 mm brass standoffs
• 1x 1/4" tripod insert
• 1x JST power male cable (switch to board)
• 8x M3 flat-top screws (enclosure)
• 6x M3 screws (PCB and power board)

ANTENNA & CABLING

• 3x U.FL→SMA pigtails (SMA bulkhead, 10–20 cm)
• 1x 6 dBi 2.4 GHz antenna (WiFi/BLE)
• 1x 6 dBi LoRa antenna (868 MHz EU / 915 MHz US / 923 MHz Asia)
• 1x GNSS helix antenna

POWER & THERMAL

• 1x 30 mm 5V fan (JST)
• 1x 3-pin mini on/off switch
• 1x Type-C 15W 3A 5V UPS (2S 18650 step-up module, 88x41x22 mm)

ENCLOSURE

• Weatherproof enclosure (3D-printable cases, seals and mounts in repo)

We've made sourcing parts easy: full bill of materials with links & images

Important notes

• PCB only. Modules and components not included
• Requires regulated 5V. Do not power with unregulated batteries. Use the UPS module in the BOM, or USB.
• Lawful use only. You are responsible for compliance with all applicable laws regarding wireless scanning, data collection, and spectrum use. See the legal disclaimer.

Resources

Build it:

• Getting Started: DIGI Node PCB
• Assembly Manual (PDF)
• PCB welcome letter
• Parts Links & Images
• Enclosures + Seals (STL)

Run it:

• Node Firmware ( browser flasher + CLI + PlatformIO)
• Command Center C2

IMPORTANT DELIVERY NOTE: Be sure to include your unit/apartment number if applicable. USPS returns packages if the address or name are not in their system.

No shipping to Alaska, Hawaii, Puerto Rico, or US territories. Orders to those destinations are cancelled and refunded.

- Dispatch is typically 1–3 business days when in stock.

- Ships within the contiguous 48 US states via USPS Ground Advantage or Priority Mail

- Every shipment includes a tracking number via USPS

- PCBs are bagged, sealed, and shipped in a bubble mailer. Orders of 6 or more ship boxed via USPS Priority Mail.

- Parts kits/assembled units are bagged, hex-paper padded and ship boxed. Assembled units ship in ESD bags.