Dual-ESP32 · RF Intelligence · v3.0

NUKRAX

Specter System

A self-contained RF intelligence platform. Scan WiFi, BLE and the full 2.4 GHz spectrum. Broadcast alerts to nearby devices. Run JR.IO — a dual-radio 2.4 GHz disruptor at maximum power.

Flash Firmware GitHub →

Capabilities

What it does

Primary System

JR.IO

Both NRF24L01+PA/LNA modules output a continuous unmodulated 2.4 GHz carrier at maximum power. Slide switch selects mode live. Zero-delay tight loop for maximum efficiency.

TX Power+20 dBm (PA/LNA)

SW HighStaggered sweep mode

SW LowRandom hop ~60 µs

Radios2× NRF24 simultaneous

Channels0 – 79 (full band)

ControlSlide switch on ESP1

WiFi Scanner

Scans all nearby networks including hidden SSIDs. Shows SSID, channel, RSSI, BSSID and encryption status. Sorted by signal strength.

802.11 B/G/N

BLE Scanner

6-second passive BLE advertisement scan. Displays device name, MAC address and RSSI. Identifies unnamed advertisement-only devices.

BLE 4.x / 5.x

2.4 GHz Spectrum

Both NRF24 radios sweep simultaneously. Full 126-channel band visualised as a bar graph on the OLED. WiFi channels 1, 6, 11 marked.

126 Channels

Proximity Alerts

Broadcasts custom messages to all nearby devices with no connection required. WiFi SSID blast, BLE beacon, or both simultaneously at max TX power.

No Connection Needed

Bill of Materials

What you need

Component	Details	Notes	Qty
ESP32-WROOM-32	Dual-core 240 MHz, WiFi + BLE built-in	Any standard 38-pin dev board	× 2
NRF24L01+PA/LNA	+20 dBm TX, external antenna	Must be PA/LNA version	× 2
0.96" OLED SSD1306	128×64 I2C 4-pin, SDA=GPIO4 SCL=GPIO5	Blue or white, both work	× 1
Push Button 6×6mm	UP · DOWN · MIDDLE tactile	Active-LOW with pull-up	× 3
Slide Switch 3-pin	JR.IO mode select, GPIO33 on ESP1	middle=GND · right=GPIO33	× 1
100µF Capacitor	Electrolytic, VCC/GND decoupling	One per NRF24 module	× 2

Wiring

Circuit diagram

ESP1 — NRF Worker

GPIO 14NRF#1 SCK (HSPI)

GPIO 12NRF#1 MISO (HSPI)

GPIO 13NRF#1 MOSI (HSPI)

GPIO 15NRF#1 CS

GPIO 16NRF#1 CE

GPIO 18NRF#2 SCK (VSPI)

GPIO 19NRF#2 MISO (VSPI)

GPIO 23NRF#2 MOSI (VSPI)

GPIO 21NRF#2 CS

GPIO 22NRF#2 CE

GPIO 33Slide switch

GPIO 17UART TX → ESP2

GPIO 32UART RX ← ESP2

ESP2 — UI Controller

GPIO 4OLED SDA

GPIO 5OLED SCL

GPIO 25Button UP

GPIO 27Button DOWN

GPIO 26Button MIDDLE

GPIO 32UART TX → ESP1

GPIO 17UART RX ← ESP1

Quick Start

Get running

Assemble hardware

Wire both ESP32s per the circuit diagram. Connect OLED (SDA=4, SCL=5) and three buttons to ESP2. Connect NRF24 modules and slide switch to ESP1. Add 100µF caps to each NRF24 VCC/GND.

Flash firmware

Connect ESP1 via USB. Open the flash page in Chrome or Edge. Click Install ESP1. Disconnect, connect ESP2, click Install ESP2. No Arduino IDE needed.

Wire UART

Cross-connect: ESP1 TX(17) → ESP2 RX(17) and ESP2 TX(32) → ESP1 RX(32). Connect a shared GND between both boards. This is mandatory.

Power on

Power both ESPs. The OLED shows the NUKRAX glitch animation for ~4 seconds then the main menu. JR.IO is at the top. Use UP/DOWN to navigate, MIDDLE to select.

Go to Flash Page

Creator

Support @CosmoLanex

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