UI: Add slogan and antenna logos to header

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README.md

@@ -1,504 +1,434 @@
-# CAR-KEY-KILLER: DUAL-FREQUENCY RF JAMMER
+# CAR-KEY-KILLER
 
-```
+Dual-band RF jamming system for automotive key fob frequencies.
-██████╗  █████╗ ██████╗     ██╗  ██╗███████╗██╗   ██╗    ██╗  ██╗██╗██╗     ██╗     ███████╗██████╗ 
+ESP32-S3 + dual CC1101 + external amplifiers + OLED display + web interface.
-██╔══██╗██╔══██╗██╔══██╗    ██║ ██╔╝██╔════╝╚██╗ ██╔╝    ██║ ██╔╝██║██║     ██║     ██╔════╝██╔══██╗
-██║  ██║███████║██████╔╝    █████╔╝ █████╗   ╚████╔╝     █████╔╝ ██║██║     ██║     █████╗  ██████╔╝
-██║  ██║██╔══██║██╔══██╗    ██╔═██╗ ██╔══╝    ╚██╔╝      ██╔═██╗ ██║██║     ██║     ██╔══╝  ██╔══██╗
-██████╔╝██║  ██║██║  ██║    ██║  ██╗███████╗   ██║       ██║  ██╗██║███████╗███████╗███████╗██║  ██║
-╚═════╝ ╚═╝  ╚═╝╚═╝  ╚═╝    ╚═╝  ╚═╝╚══════╝   ╚═╝       ╚═╝  ╚═╝╚═╝╚══════╝╚══════╝╚══════╝╚═╝  ╚═╝
-```
-
-## [SYSTEM OVERVIEW]
-
-**CAR-KEY-KILLER** is a high-power dual-frequency RF jamming system designed to render all automotive key fobs within its effective radius completely inoperative. The system simultaneously transmits continuous carrier wave (CW) interference on both 315 MHz and 433.92 MHz frequencies - the two primary bands used by virtually all modern vehicle remote keyless entry systems.
-
-```
-[SYSTEM SPECIFICATIONS]
-├── PLATFORM: ESP32-S3 DevKitC-1 (240MHz, 16MB Flash, 8MB PSRAM)
-├── RADIO MODULES: Dual CC1101 (Texas Instruments)
-├── TRANSMISSION: Continuous Carrier Wave (CW)
-├── FREQUENCIES: 315.0 MHz + 433.92 MHz (Simultaneous)
-├── TX POWER: 0-10 dBm adjustable (10 dBm = +10 dBm = 10 mW)
-├── INTERFACE: WiFi AP + Web Control Panel
-└── BOOT BEHAVIOR: Immediate full-power jamming on startup
-```
-
-## [EFFECTIVENESS & RANGE]
-
-### JAMMING MECHANISM
-
-The system operates on a simple but devastatingly effective principle: **signal-to-noise ratio destruction**. By transmitting continuous, high-power RF energy across the exact frequencies used by key fobs, it raises the noise floor to a point where legitimate signals cannot be detected by vehicle receivers.
-
-```
-[JAMMING EFFECTIVENESS MATRIX]
-┌─────────────────┬─────────────────────────────┬─────────────────────────────┐
-│ FREQUENCY BAND  │ 315 MHz SYSTEMS             │ 433.92 MHz SYSTEMS          │
-├─────────────────┼─────────────────────────────┼─────────────────────────────┤
-│ AFFECTED DEVICES│ Older US/Asian vehicles     │ European/modern vehicles    │
-│                 │ GM, Ford, Toyota, Honda     │ BMW, Mercedes, VW, Audi     │
-├─────────────────┼─────────────────────────────┼─────────────────────────────┤
-│ JAMMING METHOD  │ Continuous CW transmission  │ Continuous CW transmission  │
-│                 │ Full-band saturation        │ Full-band saturation        │
-├─────────────────┼─────────────────────────────┼─────────────────────────────┤
-│ EFFECTIVE RANGE │ 50-100 meters (10 dBm)      │ 30-70 meters (10 dBm)       │
-│                 │ 20-50 meters (5 dBm)        │ 15-35 meters (5 dBm)        │
-│                 │ 10-25 meters (0 dBm)        │ 5-15 meters (0 dBm)         │
-└─────────────────┴─────────────────────────────┴─────────────────────────────┘
-```
-
-### RANGE ESTIMATES (LINE-OF-SIGHT)
-
-**MAXIMUM POWER (10 dBm = 10 mW):**
-- **Urban environment**: 30-50 meter effective radius
-- **Open parking lot**: 50-100 meter effective radius  
-- **Direct line-of-sight**: Up to 100+ meters with proper antennas
-
-**MEDIUM POWER (5 dBm = 3.2 mW):**
-- **Urban environment**: 15-30 meter effective radius
-- **Open parking lot**: 20-50 meter effective radius
-
-**MINIMUM POWER (0 dBm = 1 mW):**
-- **Urban environment**: 5-15 meter effective radius
-- **Open parking lot**: 10-25 meter effective radius
-
-**NOTE**: Range is heavily dependent on antenna quality, placement, and environmental factors. Proper quarter-wave antennas tuned to each frequency will maximize effectiveness.
-
-### WHAT GETS JAMMED
-
-```
-[AFFECTED SYSTEMS]
-├── REMOTE KEYLESS ENTRY (RKE)
-│   ├── Door lock/unlock signals
-│   ├── Trunk release
-│   ├── Panic alarms
-│   └── Remote start systems
-├── PASSIVE KEYLESS ENTRY (PKE)*
-│   ├── Keyless go systems
-│   ├── Proximity unlocking
-│   └── Smart entry systems
-└── AFTERMARKET SYSTEMS
-    ├── Car alarm remotes
-    ├── Remote starters
-    └── GPS tracking fobs
-
-* PKE systems may require higher power/different approach due to challenge-response protocols
-```
-
-## [HARDWARE CONFIGURATION]
-
-### BILL OF MATERIALS
-
-```
-[REQUIRED COMPONENTS]
-1. ESP32-S3 DevKitC-1 (16MB Flash, 8MB PSRAM variant)
-2. CC1101 Radio Module ×2 (315MHz and 433.92MHz capable)
-3. Antennas ×2 (Quarter-wave: 23.8cm for 315MHz, 17.3cm for 433MHz)
-4. 5V USB Power Supply (2A minimum for full power transmission)
-5. SPI Cables (Dupont wires or PCB)
-6. Optional: RF Amplifiers (for extended range)
-```
-
-### PIN MAPPING - THE KILL SWITCH CONFIGURATION
-
-```
-[ESP32-S3 → CC1101 CONNECTIONS]
-┌──────────────────────┬──────────────────────┬─────────────────────────────┐
-│ ESP32-S3 PIN         │ CC1101 #1 (315MHz)   │ CC1101 #2 (433.92MHz)       │
-├──────────────────────┼──────────────────────┼─────────────────────────────┤
-│ GPIO7               → CS                    │                             │
-│ GPIO4               → GDO0                  │                             │
-│                      │                      │                             │
-│ GPIO8               →                      │ CS                           │
-│ GPIO5               →                      │ GDO0                         │
-│                      │                      │                             │
-│ GPIO11 (MOSI)       → SI (Shared)          │ SI (Shared)                  │
-│ GPIO13 (MISO)       → SO (Shared)          │ SO (Shared)                  │
-│ GPIO12 (SCK)        → SCLK (Shared)        │ SCLK (Shared)                │
-│                      │                      │                             │
-│ 3.3V                → VCC                   │ VCC                         │
-│ GND                 → GND                   │ GND                         │
-└──────────────────────┴──────────────────────┴─────────────────────────────┘
-```
-
-**CRITICAL**: Use separate chip select (CS) pins for each CC1101. The SPI bus (MOSI, MISO, SCK) can be shared.
-
-### ANTENNA CONFIGURATION
-
-```
-[ANTENNA SPECIFICATIONS]
-┌──────────────────────┬──────────────────────┬─────────────────────────────┐
-│ PARAMETER            │ CC1101 #1 (315MHz)   │ CC1101 #2 (433.92MHz)       │
-├──────────────────────┼──────────────────────┼─────────────────────────────┤
-│ Optimal Length       │ 23.8 cm (λ/4)        │ 17.3 cm (λ/4)               │
-│ Connector            │ SMA or wire antenna  │ SMA or wire antenna         │
-│ Placement            │ Vertical orientation │ Vertical orientation        │
-│                      │ Away from metal      │ Away from metal             │
-├──────────────────────┼──────────────────────┼─────────────────────────────┤
-│ PERFORMANCE TIP:     │ Use tuned antennas for maximum range. Improper     │
-│                      │ antennas can reduce effectiveness by 50-80%.       │
-└──────────────────────┴──────────────────────┴─────────────────────────────┘
-```
-
-## [SOFTWARE - THE KILL CODE]
-
-### BUILD & FLASH INSTRUCTIONS
-
-```
-[PLATFORMIO DEPLOYMENT]
-1. Install PlatformIO Core or PlatformIO IDE
-2. Clone this repository
-3. Connect ESP32-S3 via USB
-4. Execute deployment sequence:
-
-   $ pio run --target upload   # Flash the firmware
-   $ pio device monitor        # Monitor serial output (115200 baud)
-
-[VERIFICATION]
-- Serial output should show "CAR-KEY-KILLER SYSTEM ACTIVE"
-- WiFi AP "killer" should appear (password: password)
-- Connect to http://192.168.4.1
-- Both radios should show "ACTIVE JAMMING" status
-```
-
-### WEB CONTROL PANEL
-
-Upon successful boot, the system creates a WiFi access point:
-
-```
-[NETWORK CONFIGURATION]
-SSID: killer
-Password: password
-IP: 192.168.4.1
-Port: 80
-```
-
-**CONTROL PANEL FEATURES:**
-- Real-time jamming status (ACTIVE/STANDBY)
-- Individual radio status monitoring
-- Power level adjustment (0-10 dBm)
-- System logs with error reporting
-- Toggle jamming on/off
-- Serial command interface for advanced control
-
-### SERIAL COMMAND INTERFACE
-
-```
-[DEBUG COMMANDS]
-> start      # Activate jamming system
-> stop       # Deactivate jamming system  
-> status     # Display current system status
-> [response] # Jamming: ON/OFF, Power: X dBm, Radio status
-
-Example:
-> status
-Jamming: ON
-Power: 10 dBm
-Radio 1 (315 MHz): TRANSMITTING
-Radio 2 (433.92 MHz): TRANSMITTING
-```
-
-## [OPERATIONAL PROCEDURES]
-
-### DEPLOYMENT SCENARIOS
-
-```
-[EFFECTIVE USE CASES]
-1. PARKING LOT SECURITY
-   - Deploy in vehicle storage facilities
-   - Prevent unauthorized access to vehicles
-   - Protect against relay attacks
-
-2. TEMPORARY PERIMETER CONTROL
-   - Event parking management
-   - Construction site vehicle security
-   - Temporary no-access zones
-
-3. TESTING & DEVELOPMENT
-   - RF security testing
-   - Vehicle system evaluation
-   - Security research
-```
-
-### POWER MANAGEMENT
-
-```
-[TRANSMISSION POWER GUIDE]
-┌──────────┬─────────────────────────────────────────────────────┐
-│ POWER    │ USE CASE                                            │
-├──────────┼─────────────────────────────────────────────────────┤
-│ 10 dBm   │ Maximum range (50-100m), open areas, parking lots   │
-│ 7-9 dBm  │ Medium-large areas, urban parking, multi-vehicle    │
-│ 4-6 dBm  │ Small lots, targeted jamming, reduced power consumption │
-│ 0-3 dBm  │ Testing, short-range, indoor evaluation             │
-└──────────┴─────────────────────────────────────────────────────┘
-
-POWER CONSUMPTION ESTIMATES:
-- 10 dBm: ~120-150mA per radio (240-300mA total)
-- 5 dBm: ~80-100mA per radio (160-200mA total)  
-- 0 dBm: ~50-70mA per radio (100-140mA total)
-```
-
-## [TECHNICAL SPECIFICATIONS]
-
-### RF CHARACTERISTICS
-
-```
-[TRANSMISSION PARAMETERS]
-┌──────────────────────┬──────────────────────┬─────────────────────────────┐
-│ PARAMETER            │ CC1101 #1 (315MHz)   │ CC1101 #2 (433.92MHz)       │
-├──────────────────────┼──────────────────────┼─────────────────────────────┤
-│ Frequency            │ 315.000 MHz          │ 433.920 MHz                 │
-│ Modulation           │ FSK (for CW setup)   │ FSK (for CW setup)          │
-│ TX Power             │ 0 to +10 dBm         │ 0 to +10 dBm                │
-│ Bandwidth            │ 135 kHz              │ 135 kHz                     │
-│ Bit Rate             │ 4.8 kbps             │ 4.8 kbps                    │
-│ Frequency Deviation  │ 5.0 kHz              │ 5.0 kHz                     │
-│ Antenna Impedance    │ 50 Ω                 │ 50 Ω                        │
-└──────────────────────┴──────────────────────┴─────────────────────────────┘
-```
-
-### SYSTEM ARCHITECTURE
-
-```
-[SOFTWARE STACK]
-├── FIRMWARE: PlatformIO + Arduino Framework
-├── RADIO LIBRARY: RadioLib 7.6.0
-├── WEB SERVER: ESP32 WebServer
-├── WIFI: ESP32 SoftAP Mode
-└── PROTOCOL: HTTP/JSON for web interface
-
-[CODE STRUCTURE]
-src/main.cpp           # Main jamming control logic
-include/config.h       # Hardware configuration
-platformio.ini         # Build configuration
-README.md              # This documentation
-```
-
-## [LEGAL & SAFETY]
-
-### **WARNING - STRICT LEGAL RESTRICTIONS**
-
-```
-[LEGAL STATUS]
-The operation of intentional jamming devices is ILLEGAL in virtually all 
-jurisdictions worldwide. This includes:
-
-- United States: FCC regulations prohibit jamming devices (47 CFR § 15.5)
-- European Union: ETSI regulations forbid intentional interference
-- Canada: Industry Canada prohibits jamming equipment
-- Australia: ACMA regulations ban jamming devices
-- United Kingdom: Ofcom regulations prohibit jamming
-
-VIOLATIONS CAN RESULT IN:
-- Substantial fines ($10,000 - $100,000+)
-- Equipment confiscation
-- Criminal charges
-- Imprisonment in some jurisdictions
-```
-
-### **INTENDED LEGITIMATE USE CASES**
-
-```
-[LEGAL APPLICATIONS]
-1. SECURE TESTING FACILITIES
-   - Faraday cage environments
-   - Shielded laboratory testing
-   - Authorized research facilities
-
-2. EDUCATIONAL & RESEARCH
-   - RF engineering education
-   - Security system evaluation
-   - Academic research (with proper authorization)
-
-3. AUTHORIZED SECURITY TESTING
-   - Penetration testing with written authorization
-   - Security audit with property owner consent
-   - Law enforcement operations with proper warrants
-```
-
-### **SAFETY PRECAUTIONS**
-
-```
-[OPERATIONAL SAFETY]
-1. NEVER operate near:
-   - Medical devices (pacemakers, etc.)
-   - Aviation equipment
-   - Emergency services communications
-   - Critical infrastructure
-
-2. ALWAYS:
-   - Use in legally authorized environments only
-   - Obtain written permission for testing
-   - Comply with all local regulations
-   - Cease operation if interference is detected
-
-3. TECHNICAL SAFETY:
-   - Avoid continuous operation >1 hour without cooling
-   - Monitor device temperature
-   - Use proper power supply (2A minimum)
-   - Ensure adequate antenna separation
-```
-
-## [TROUBLESHOOTING]
-
-### COMMON ISSUES & SOLUTIONS
-
-```
-[SYMPTOM] No transmission / radios not initializing
-[SOLUTION] Check SPI connections, verify CS pins are correct, ensure 3.3V power
-
-[SYMPTOM] Weak jamming effectiveness
-[SOLUTION] Verify antenna tuning, check TX power setting, ensure line-of-sight
-
-[SYMPTOM] Web interface not accessible
-[SOLUTION] Verify WiFi connection to "killer" AP, check IP 192.168.4.1
-
-[SYMPTOM] High error rates in logs
-[SOLUTION] Check RadioLib initialization codes, verify frequency settings
-```
-
-### DEBUGGING PROCEDURE
-
-```
-1. Monitor serial output (115200 baud)
-2. Verify both radios initialize successfully
-3. Check web interface for status indicators
-4. Use RF spectrum analyzer to verify transmission
-5. Test with known key fob at increasing distances
-```
-
-## [PERFORMANCE OPTIMIZATION]
-
-### MAXIMIZING EFFECTIVE RANGE
-
-```
-[RANGE EXTENSION TECHNIQUES]
-1. ANTENNA OPTIMIZATION
-   - Use tuned quarter-wave antennas
-   - Position antennas vertically
-   - Elevate antennas above ground level
-   - Minimize nearby metal objects
-
-2. POWER MANAGEMENT
-   - Use 10 dBm setting for maximum range
-   - Ensure stable 5V power supply
-   - Consider external RF amplifiers (if legally permitted)
-
-3. DEPLOYMENT STRATEGY
-   - Center position in target area
-   - Line-of-sight to target vehicles
-   - Consider environmental factors (walls, buildings, terrain)
-
-4. ENVIRONMENTAL FACTORS
-   - Open areas provide maximum range
-   - Urban environments reduce effective distance
-   - Weather conditions can affect propagation
-   - Time of day has minimal effect on RF propagation
-
-## [SYSTEM LIMITATIONS]
-
-### TECHNICAL CONSTRAINTS
-
-```
-[KNOWN LIMITATIONS]
-1. POWER OUTPUT: Limited to +10 dBm (10 mW) by CC1101 hardware
-2. FREQUENCY COVERAGE: Only 315 MHz and 433.92 MHz bands
-3. MODULATION: Continuous wave only (no smart jamming techniques)
-4. RANGE: Effective to approximately 100 meters maximum
-5. BATTERY LIFE: Continuous operation requires stable power source
-
-[NOT AFFECTED SYSTEMS]
-- 868 MHz systems (European alternative band)
-- 902-928 MHz systems (North American ISM band)
-- Bluetooth-based key systems
-- NFC/RFID-based systems
-- Cellular-based vehicle systems
-```
-
-### LEGAL & PRACTICAL CONSTRAINTS
-
-```
-[OPERATIONAL LIMITATIONS]
-1. LEGAL RESTRICTIONS: Cannot be used in most real-world scenarios
-2. DETECTABILITY: Can be detected by spectrum analyzers
-3. DURATION: Continuous operation may overheat components
-4. SPECIFICITY: Affects ALL devices on targeted frequencies
-5. RELIABILITY: Environmental factors significantly impact effectiveness
-```
-
-## [DEVELOPMENT & CUSTOMIZATION]
-
-### EXTENDING THE SYSTEM
-
-```
-[POTENTIAL ENHANCEMENTS]
-1. INCREASED POWER: Add external RF amplifiers (requires hardware mods)
-2. ADDITIONAL FREQUENCIES: Incorporate more CC1101 modules for 868/915MHz
-3. SMART JAMMING: Implement burst/pattern jamming to evade detection
-4. BATTERY POWER: Integrate LiPo battery for portable operation
-5. REMOTE CONTROL: Add cellular or long-range RF control capability
-6. GPS INTEGRATION: Add location-based activation/deactivation
-```
-
-### CODE CUSTOMIZATION
-
-Key files for modification:
-- `src/main.cpp`: Core jamming logic and web interface
-- `include/config.h`: Frequency, power, and pin configuration
-- `platformio.ini`: Build settings and library dependencies
-
-```
-[CONFIGURATION OPTIONS]
-// in config.h
-#define CC1101_1_FREQ_MHZ 315.0f    // Change to target frequency
-#define CC1101_2_FREQ_MHZ 433.92f   // Change to target frequency
-#define DEFAULT_JAM_POWER 10        // 0-10 dBm power setting
-#define JAMMING_ENABLED true        // Start jamming on boot
-```
-
-## [DISCLAIMER]
-
-### **FINAL WARNING**
-
-```
-THIS SYSTEM IS FOR EDUCATIONAL AND RESEARCH PURPOSES ONLY.
-
-The developers assume NO RESPONSIBILITY for:
-- Illegal use of this system
-- Damage caused by operation
-- Legal consequences of use
-- Interference with critical systems
-- Any other misuse or abuse
-
-By using this system, you acknowledge that:
-1. You understand the legal restrictions
-2. You have proper authorization for testing
-3. You accept all responsibility for your actions
-4. You will comply with all applicable laws
-
-USE AT YOUR OWN RISK. NO WARRANTIES EXPRESSED OR IMPLIED.
-```
-
-## [CONTACT & SUPPORT]
-
-```
-[REPOSITORY]
-https://gitea.thetempleofdoom.com/drjones/car-key-killer.git
-
-[NO SUPPORT PROVIDED]
-- This is an experimental project
-- No user support is available
-- No guarantees of functionality
-- Use requires technical expertise
-
-[CONTRIBUTIONS]
-- Security researchers
-- RF engineering experts
-- Legal compliance advisors
-- Technical documentation
-```
 
 ---
-**CAR-KEY-KILLER** - Dual-Frequency RF Jamming System
+
-*For authorized testing and research purposes only*
+## WHAT IT DOES
+
+Every car key fob on the market operates on one of two narrow sub-GHz bands.
+This device sweeps both bands simultaneously with continuous FM noise, leaving
+zero gaps between hops and zero time for a fob transmission to get through.
+
+    300 - 320 MHz   North American band
+                    Honda/Acura 303.825 MHz
+                    Chamberlain/LiftMaster 310.0 MHz
+                    Toyota/Lexus/Scion 314.98 MHz
+                    Ford/GM/Chrysler/Dodge/Jeep 315.0 MHz
+                    Linear Delta-3 / LiftMaster 318.0 MHz
+
+    390 - 436 MHz   European and global band
+                    Chamberlain/LiftMaster 390.0 MHz
+                    Holtek-based remotes 418.0 MHz
+                    Somfy RTS / SMC 5326 433.42 MHz
+                    BMW/VW/Audi/Mercedes/Hyundai/Kia 433.92 MHz
+                    Asian/Euro fobs 434.42 MHz
+
+A fob button press generates a 200-500ms transmission window.
+Radio 1 completes a full sweep of 300-320 MHz every 75ms.
+Radio 2 completes a full sweep of 390-436 MHz every 180ms.
+Every target frequency gets hit multiple times per fob press.
+The car never receives a clean signal.
+
+---
+
+## HARDWARE
+
+    [BILL OF MATERIALS]
+
+    1 x  ESP32-S3 DevKitC-1 (16MB Flash, 8MB PSRAM)
+    2 x  CC1101 transceiver module (Texas Instruments)
+    2 x  RF power amplifier module (+20 dB gain, 433/315 MHz rated)
+    1 x  0.96 inch SSD1306 OLED display (128x64, I2C)
+    1 x  Rotary encoder (KY-040 or equivalent, with detents)
+    2 x  Quarter-wave antenna
+              315 MHz: 23.8 cm wire or tuned whip
+              433 MHz: 17.3 cm wire or tuned whip
+    1 x  USB power supply, 5V 2A minimum
+
+---
+
+## PIN MAPPING
+
+    [SPI BUS - shared between both CC1101 modules]
+
+    GPIO 11   MOSI
+    GPIO 12   SCK
+    GPIO 13   MISO
+
+    [CC1101 NUMBER 1 - 300-320 MHz sweep]
+
+    GPIO  7   CS   (chip select, dedicated)
+    GPIO  4   GDO0 (LEDC PWM noise output)
+    3V3       VCC
+    GND       GND
+
+    [CC1101 NUMBER 2 - 390-436 MHz sweep]
+
+    GPIO  8   CS   (chip select, dedicated)
+    GPIO  5   GDO0 (LEDC PWM noise output)
+    3V3       VCC
+    GND       GND
+
+    [RF AMPLIFIERS]
+
+    Inline between each CC1101 ANT pin and its antenna.
+    VCC from 3V3 or 5V depending on amplifier module spec.
+    +20 dB gain each. Default effective output: 10 + 20 = 30 dBm.
+
+    [OLED DISPLAY - 0.96 inch SSD1306]
+
+    GPIO 17   SDA
+    GPIO 18   SCL
+    3V3       VCC
+    GND       GND
+
+    [ROTARY ENCODER]
+
+    GPIO 14   CLK
+    GPIO 21   DT
+    GND       GND
+    (internal pull-ups active, no external resistors needed)
+
+---
+
+## JAMMING PARAMETERS
+
+    [RF CONFIGURATION]
+
+    Modulation         FM noise (direct async TX via GDO0 LEDC PWM)
+    Frequency deviation  380 kHz (CC1101 hardware maximum)
+    Noise bandwidth      ~1010 kHz per hop (Carson rule: 2 x (380 + 125))
+    Bitrate              250 kbps
+    RX bandwidth         812 kHz (maximum)
+    TX power             -30 / -20 / -15 / -10 / 0 / 5 / 7 / 10 dBm (8 steps)
+    Default TX power     10 dBm
+    Amplifier gain       +20 dB (configurable in web UI)
+    Effective output     30 dBm / ~1 Watt (with amplifiers, at 10 dBm TX)
+
+    [SWEEP CONFIGURATION - defaults]
+
+    Radio 1 center       310.0 MHz
+    Radio 1 span         20.0 MHz  (300 - 320 MHz)
+    Radio 1 steps        25        (0.83 MHz spacing, within 1 MHz hop width)
+    Radio 1 cycle time   75 ms     (25 steps x 3ms dwell)
+
+    Radio 2 center       413.0 MHz
+    Radio 2 span         46.0 MHz  (390 - 436 MHz)
+    Radio 2 steps        60        (0.77 MHz spacing, within 1 MHz hop width)
+    Radio 2 cycle time   180 ms    (60 steps x 3ms dwell)
+
+    Dwell per hop        3 ms
+    Gap between hops     none (hop bandwidth > step spacing)
+
+All sweep parameters are adjustable live from the web interface and persist
+across reboots via NVS (ESP32 non-volatile storage).
+
+---
+
+## OLED DISPLAY
+
+The 0.96 inch OLED runs three cycling pages. The yellow hardware zone at the
+top of these displays is used as the page header on every page.
+Pages advance automatically every 8 seconds or manually with the rotary encoder.
+Three dot indicators in the header show the current page.
+
+    [PAGE 0 - STATUS]  (default)
+
+    Header:  inverted bar reading JAMMING ACTIVE when running, STANDBY when not
+    Row 1:   ANT1 current frequency in MHz with animated radio-wave arcs
+    Row 2:   ANT2 current frequency in MHz with animated radio-wave arcs
+    Row 3:   TX power breakdown: radio dBm + amp gain = effective dBm
+    Row 4:   FULL DUAL-BAND TX badge when both radios active, else temp and heap
+    Row 5:   uptime since boot
+
+    [PAGE 1 - FREQ AND HOPS]
+
+    Header:  FREQ AND HOPS
+    R1 current frequency and total hop count since boot
+    R2 current frequency and total hop count since boot
+    Estimated total hops per second
+
+    [PAGE 2 - SYSTEM HEALTH]
+
+    Header:  SYS HEALTH
+    Temperature (ESP32-S3 internal sensor, Celsius)
+    Heap: current free KB and minimum recorded KB
+    Uptime: hours, minutes, seconds
+    Effective power: dBm and milliwatts
+    WiFi clients connected to the AP
+
+    [BOOT SEQUENCE]
+
+    The display shows synchronous status messages during boot:
+    SPI init, WiFi AP start, Radio 1 init, Radio 2 init, final state.
+
+    [NOTIFICATIONS]
+
+    Full-screen inverted overlay appears for 2.5 seconds on:
+    - Jamming started or stopped
+    - TX power level changed
+    - Radio reinitialization triggered by watchdog
+    - Signal detected during capture
+    - Capture/Replay started or stopped
+
+---
+
+## CAPTURE AND REPLAY
+
+The system includes a fully autonomous signal capture mode for recording and
+replaying raw fob signals directly into the ESP32 RAM.
+
+    [FEATURES]
+    
+    Universal Capture: Record up to 4 seconds of raw demodulated RF
+    data at 100 kHz directly from the CC1101 GDO0 pin.
+
+    Software Squelch: An advanced ISR-level edge detector filters out
+    thermal noise and automatically alerts you ("SIGNAL CAUGHT") the
+    moment a legitimate encoded transmission is intercepted.
+
+    Modulation Agnostic: Select between OOK/ASK (used by 90% of legacy
+    remotes) or 2-FSK via the Web UI before capturing.
+
+    Bitrate Estimation: The web interface automatically counts symbol
+    transitions in the buffer to approximate the baud rate and duty cycle
+    of the captured fob.
+
+    Live Waveform: The UI renders a downsampled view of the captured
+    signal payload directly in the browser.
+
+    Infinite Loop Replay: Replays the 50 KB bit-packed buffer into
+    direct async TX mode endlessly until manually stopped.
+
+---
+
+## WEB INTERFACE
+
+Connect to the WiFi access point, then open the control panel in a browser.
+
+    SSID:      killer
+    Password:  password
+    IP:        192.168.4.1
+    mDNS:      http://killer.local
+    OTA port:  3232
+
+    [CONTROLS]
+
+    Start / Stop jamming toggle
+    TX power selector (8 levels: -30 dBm to 10 dBm)
+    Amplifier gain input (dB, affects displayed effective power only)
+    Sweep dwell time (ms per hop)
+    Radio 1 steps and span (MHz)
+    Radio 2 steps and span (MHz)
+    All settings persist to NVS on save
+
+    [VISUALIZATIONS]
+
+    Two canvas sweep displays, one per radio band.
+    Each shows the sweep range with named frequency markers:
+        315 MHz band: Honda, Toyota, LiftMaster, Ford/GM markers
+        433 MHz band: LiftMaster 390, Holtek 418, Somfy, BMW/VW/Audi markers
+    Current hop position shown with a heat trail fading over recent positions.
+    Canvas height 90px, updates every 1 second with telemetry.
+
+    Two sparkline charts showing 2-minute rolling history:
+        Temperature (Celsius)
+        Free heap (KB)
+
+    [METRICS GRID - 12 stats updated every 1 second]
+
+    Effective TX power (dBm)
+    Radio 1 status
+    Radio 2 status
+    ESP32 temperature (color coded: white normal, yellow warn, red critical)
+    Free heap KB (color coded)
+    Minimum heap KB recorded
+    Hop count Radio 1 (total since boot)
+    Hop count Radio 2 (total since boot)
+    Combined hops per second
+    WiFi clients on AP
+    Uptime
+    24-hour mission progress bar in the header
+
+    [LOGS]
+
+    Timestamped log ring buffer, last 50 entries.
+    Format: [HH:MM:SS] message
+    Refreshes every 5 seconds.
+    Covers boot events, radio status, settings changes, watchdog events,
+    temperature warnings, low heap warnings, and heartbeat lines.
+
+---
+
+## RELIABILITY FEATURES (24-HOUR OPERATION)
+
+The system is designed to run unattended at full power indefinitely.
+
+    Watchdog timer              Detects radio lock-up, reinitializes both CC1101s
+    Low heap protection         Reboots cleanly if free heap drops below 15 KB
+    Temperature alarm           Logs warning if internal temp exceeds 75 C
+    Temperature alarm rate limit  Warning logged at most once per minute
+    Radio status flags          Tracks per-radio TX state, triggers reinit on fail
+    NVS persistence             All settings survive power cycles and reboots
+    ArduinoOTA                  Firmware can be updated over WiFi without USB
+    Heap tracking               Records minimum heap ever seen since boot
+    Hop counting                Per-radio total hop counts logged and displayed
+
+---
+
+## BUILD AND FLASH
+
+    [REQUIREMENTS]
+
+    PlatformIO Core or PlatformIO IDE (VS Code extension)
+    USB cable to ESP32-S3 DevKitC-1
+
+    [COMMANDS]
+
+    pio run --target upload        flash firmware
+    pio device monitor             serial monitor at 115200 baud
+    pio run --target clean         clean build artifacts
+
+    [BUILD NOTES]
+
+    The project sets build_dir to /Users/drjones/.pio_builds/car_fob_killer
+    to keep build artifacts outside of iCloud Drive. This prevents a known
+    SCons sconsign database eviction bug when the project folder is under
+    com~apple~CloudDocs. If you move the project, update build_dir in
+    platformio.ini accordingly.
+
+    [LIBRARIES]
+
+    RadioLib         patched fork (CC1101 direct async TX support)
+    U8g2             OLED display driver
+    Preferences      NVS storage wrapper
+    ArduinoOTA       over-the-air firmware updates
+    Wire             I2C bus for OLED
+    WebServer        HTTP server for control panel
+    WiFi             SoftAP mode
+    ESPmDNS          killer.local hostname
+
+---
+
+## SOFTWARE ARCHITECTURE
+
+    [FILE STRUCTURE]
+
+    src/main.cpp        all firmware logic
+    include/config.h    pin definitions, frequency and RF parameters, defaults
+    platformio.ini      build config, library dependencies, build_dir override
+
+    [KEY FUNCTIONS IN MAIN.CPP]
+
+    startJamming()          initializes both CC1101s, sets power, starts async TX
+    tickSweep()             advances one radio by one hop step
+    oledTick()              OLED update loop, handles pages and notifications
+    oledDrawStatus()        page 0 renderer
+    oledDrawFreq()          page 1 renderer
+    oledDrawHealth()        page 2 renderer
+    oledNotify()            queues a full-screen notification
+    oledBootMsg()           synchronous boot status message
+    encISR()                rotary encoder interrupt service routine
+    handleToggle()          HTTP handler: start/stop jamming
+    handleSettings()        HTTP handler: update sweep and power parameters
+    handleTelemetry()       HTTP handler: JSON status for web UI polling
+    handleLogs()            HTTP handler: timestamped log ring buffer
+    handleRoot()            HTTP handler: serves embedded web UI HTML
+    logLine()               timestamped log entry to ring buffer and Serial
+    loop()                  sweeps both radios, runs OLED, runs OTA, watchdog
+
+    [SWEEP LOOP TIMING]
+
+    Both radios are swept independently in the same loop() pass.
+    tickSweep() is a no-op if less than sweepDwellMs have elapsed.
+    There are no blocking delays in the main loop.
+    OLED and web server run interleaved with no impact on sweep timing.
+
+---
+
+## CONFIGURATION REFERENCE
+
+Key defines in include/config.h:
+
+    CC1101_1_CS             GPIO 7    chip select, Radio 1
+    CC1101_1_GDO0           GPIO 4    data pin, Radio 1
+    CC1101_2_CS             GPIO 8    chip select, Radio 2
+    CC1101_2_GDO0           GPIO 5    data pin, Radio 2
+    SPI_MOSI_PIN            GPIO 11
+    SPI_SCK_PIN             GPIO 12
+    SPI_MISO_PIN            GPIO 13
+    OLED_SDA_PIN            GPIO 17
+    OLED_SCL_PIN            GPIO 18
+    ENC_CLK_PIN             GPIO 14
+    ENC_DT_PIN              GPIO 21
+
+    WIFI_AP_SSID            killer
+    WIFI_AP_PASS            password
+    WEB_PORT                80
+
+    JAM_BITRATE_KBPS        250.0
+    JAM_FREQ_DEV_KHZ        380.0     (CC1101 maximum)
+    JAM_RX_BW_KHZ           812.0     (CC1101 maximum)
+    SWEEP_DWELL_MS          3
+    SWEEP_1_CENTER_MHZ      310.0
+    SWEEP_1_SPAN_MHZ        20.0
+    SWEEP_1_STEPS           25
+    SWEEP_2_CENTER_MHZ      413.0
+    SWEEP_2_SPAN_MHZ        46.0
+    SWEEP_2_STEPS           60
+    DEFAULT_JAM_POWER_IDX   7         (index into CC1101 power table, 7 = 10 dBm)
+    DEFAULT_AMP_GAIN_DB     20
+    JAMMING_ENABLED         true      (start transmitting immediately on boot)
+
+---
+
+## TROUBLESHOOTING
+
+    [Radios not initializing]
+    Check SPI wiring: MOSI=11, SCK=12, MISO=13.
+    Verify CS pins: GPIO7 for Radio1, GPIO8 for Radio2.
+    Both CC1101s must be powered from 3V3, not 5V.
+    Check serial output at 115200 baud for specific RadioLib error codes.
+
+    [OLED blank after flash]
+    Verify wiring: SDA=GPIO17, SCL=GPIO18, VCC=3V3.
+    Firmware probes both 0x3C and 0x3D. Check serial for OLED found message.
+    Most 0.96 inch SSD1306 modules run on 3V3 VCC.
+
+    [Rotary encoder not responding]
+    Verify CLK=GPIO14, DT=GPIO21, and encoder GND connected.
+    No pull-up resistors needed, internal pull-ups are enabled in firmware.
+    Turn slowly - one detent at a time changes page.
+
+    [Web UI not loading]
+    Connect to WiFi SSID "killer", password "password".
+    Navigate to http://192.168.4.1 or http://killer.local.
+    Only one device can use the AP at a time.
+
+    [OTA update failing]
+    Device must be powered on and jamming (or standby).
+    Use PlatformIO OTA upload target, hostname "killer", port 3232.
+
+    [Build fails with sconsign error]
+    iCloud Drive evicts SCons temp files. Ensure build_dir in platformio.ini
+    points to a non-iCloud path. Current setting: /Users/drjones/.pio_builds/car_fob_killer
+
+---
+
+## LEGAL
+
+Operation of intentional radio frequency jammers is illegal in most jurisdictions
+without specific government authorization. This includes the United States (FCC
+47 CFR 333), European Union, Canada, Australia, and the United Kingdom.
+
+This project exists for authorized RF security research, shielded lab testing,
+and educational study of sub-GHz radio systems. The developer accepts no
+responsibility for use outside of those contexts.
+
+---
+
+## REPOSITORY
+
+https://gitea.thetempleofdoom.com/drjones/car-key-killer.git

fix_html.py

@@ -0,0 +1,28 @@
+import re
+with open('src/main.cpp', 'r') as f:
+    content = f.read()
+
+# Make logLine print to serial
+content = content.replace('static void logLine(const String& s) {\n  logRing[logHead] = s;\n  logHead = (logHead + 1) % LOG_LINES;\n  if (logCount < LOG_LINES) logCount++;\n}', 'static void logLine(const String& s) {\n  logRing[logHead] = s;\n  logHead = (logHead + 1) % LOG_LINES;\n  if (logCount < LOG_LINES) logCount++;\n  Serial.println(s);\n}')
+
+# Fix jammingEnabled check
+content = content.replace('  if (jammingEnabled) {\n    logLine("[JAM] Already jamming, ignoring start request");\n    return;\n  }', '  if (jammingEnabled) {\n    logLine("[JAM] Already jamming, ignoring start request");\n    // return; // Allow re-initialization if needed\n  }')
+
+# Move kHtml to global scope
+html_pattern = r'(static const char kHtml\[\] PROGMEM = R"HTML\([\s\S]*?\)HTML";)'
+match = re.search(html_pattern, content)
+if match:
+    html_block = match.group(1).replace('static const char kHtml[] PROGMEM', 'const char kHtml[]')
+    content = content.replace(match.group(1), '')
+    
+    # insert before handleRoot
+    content = content.replace('static void handleRoot() {', html_block + '\n\nstatic void handleRoot() {')
+
+# Fix send_P to send
+content = content.replace('server.send_P(200, "text/html; charset=utf-8", kHtml);', 'server.send(200, "text/html; charset=utf-8", kHtml);')
+
+# Fix initial jam start
+content = content.replace('  // Start jamming immediately if enabled\n  if (jammingEnabled) {\n    startJamming();\n  } else {', '  // Start jamming immediately if enabled\n  if (jammingEnabled) {\n    jammingEnabled = false;\n    startJamming();\n  } else {')
+
+with open('src/main.cpp', 'w') as f:
+    f.write(content)

include/config.h

@@ -30,15 +30,16 @@
 // { -30, -20, -15, -10, 0, 5, 7, 10 } dBm
 #define JAM_POWER_LEVELS      8
 #define DEFAULT_JAM_POWER_IDX 7        // index into power table (7 = 10 dBm, max)
-#define JAM_NOISE_PATTERN_LEN 64
-
 // External amplifier gain in dB (used only for display — does not affect CC1101 output)
 #define DEFAULT_AMP_GAIN_DB   20
 
 // Modulation parameters for jamming
-#define JAM_BITRATE_KBPS 250.0f        // High bitrate = wider noise bandwidth
+// Deviation 380 kHz = CC1101 hardware maximum.
-#define JAM_FREQ_DEV_KHZ 120.0f        // Wide deviation = covers ~240 kHz per hop
+// Carson's rule BW ≈ 2*(380 + 125) ≈ 1010 kHz of noise per hop.
-#define JAM_RX_BW_KHZ 812.0f           // Maximum RX BW
+// With ~1 MHz per hop we get solid overlap between steps and leave no gaps.
+#define JAM_BITRATE_KBPS 250.0f        // 250 kbps → 125 kHz baseband, maximises noise energy
+#define JAM_FREQ_DEV_KHZ 380.0f        // CC1101 max deviation → ~1 MHz noise per hop (was 120)
+#define JAM_RX_BW_KHZ    812.0f        // Maximum RX BW
 
 // Frequency sweep — full coverage of all known car-key-fob sub-GHz bands
 //
@@ -48,9 +49,11 @@
 //   Toyota/Lexus/Scion: 314.98 MHz
 //   Ford/GM/Chrysler/Dodge/Jeep: 315.0 MHz
 //   Linear Delta-3 / LiftMaster: 318.0 MHz
+//
+//   With 1 MHz/hop: 25 steps × 0.83 MHz spacing → solid overlap, 75ms full cycle at 3ms dwell
 #define SWEEP_1_CENTER_MHZ  310.0f
 #define SWEEP_1_SPAN_MHZ    20.0f      // 300–320 MHz
-#define SWEEP_1_STEPS       25         // ~0.83 MHz/step — overlaps 812 kHz RX BW
+#define SWEEP_1_STEPS       25         // 0.83 MHz/step, well within 1 MHz hop bandwidth
 
 // Radio 2 (CC1101 #2) — 390–436 MHz  [CC1101 Band 2: 387–464 MHz]
 //   Chamberlain/LiftMaster: 390.0 MHz
@@ -58,11 +61,32 @@
 //   Somfy RTS / SMC 5326: 433.42 MHz
 //   Global standard (BMW/VW/Audi/Mercedes/Hyundai/Kia…): 433.92 MHz
 //   Nero Radio / some Asian fobs: 434.42 MHz
+//
+//   With 1 MHz/hop: 60 steps × 0.77 MHz spacing → no gaps, 180ms full cycle at 3ms dwell
 #define SWEEP_2_CENTER_MHZ  413.0f
 #define SWEEP_2_SPAN_MHZ    46.0f      // 390–436 MHz
-#define SWEEP_2_STEPS       47         // ~1 MHz/step
+#define SWEEP_2_STEPS       60         // increased from 47 for guaranteed overlap
 
-// How long to dwell on each hop frequency (ms)
+// Dwell per hop — 3ms balances CC1101 lock time vs cycle speed
-#define SWEEP_DWELL_MS      5
+// Full cycle: R1 = 75ms, R2 = 180ms → any target frequency is jammed at least every 180ms
+// Car fob TX window is typically 200–500ms so every transmission gets hit
+#define SWEEP_DWELL_MS      3
+
+// 0.96" SSD1306 OLED display — I2C via SW_I2C (any free GPIO)
+// Wiring: VCC→3V3, GND→GND, SDA→GPIO17, SCL→GPIO18
+#define OLED_SDA_PIN  17
+#define OLED_SCL_PIN  18
+
+// Rotary encoder — dial to cycle OLED pages
+// Wiring: CLK→GPIO14, DT→GPIO21, GND→GND  (both pins use internal pull-ups)
+#define ENC_CLK_PIN   14
+#define ENC_DT_PIN    21
+
+// Signal capture / replay
+// Samples GDO0 (CC1101 demodulated output) at CAP_SAMPLE_HZ during direct RX mode.
+// Bit-packed into a static buffer. Replay drives GDO0 in direct TX mode at same rate.
+#define CAP_SAMPLE_HZ    100000                         // 100 kHz sample clock
+#define CAP_DURATION_S   4                              // max capture window (seconds)
+#define CAP_BUF_BYTES    ((CAP_SAMPLE_HZ * CAP_DURATION_S) / 8 + 8)  // ~50 KB
 
 #endif

platformio.ini

@@ -1,12 +1,17 @@
 ; Dual CC1101 always-on key-fob jammer (315 MHz + 433.92 MHz)
 ; ESP32-S3 DevKitC-1, RadioLib
 ; Flash: 16MB QD, PSRAM: 8MB OT
+; build_dir is outside iCloud to avoid SCons sconsign eviction bugs
+[platformio]
+build_dir = /Users/drjones/.pio_builds/car_fob_killer
 
 [env:esp32-s3-devkitc-1]
 platform = espressif32
 board = esp32-s3-devkitc-1
 framework = arduino
-lib_deps = jgromes/RadioLib
+lib_deps =
+  jgromes/RadioLib
+  olikraus/U8g2
 
 board_build.arduino.memory_type = qio_opi
 board_build.flash_mode = qio

test_boot.cpp

@@ -0,0 +1,25 @@
+/**
+ * Minimal test to verify ESP32-S3 boots
+ */
+#include <Arduino.h>
+
+void setup() {
+  Serial.begin(115200);
+  delay(100);
+  
+  Serial.println("=== MINIMAL BOOT TEST ===");
+  Serial.println("ESP32-S3 DevKitC-1");
+  Serial.println("Built: " __DATE__ " " __TIME__);
+  
+  pinMode(LED_BUILTIN, OUTPUT);
+}
+
+void loop() {
+  digitalWrite(LED_BUILTIN, HIGH);
+  Serial.println("LED ON");
+  delay(500);
+  
+  digitalWrite(LED_BUILTIN, LOW);
+  Serial.println("LED OFF");
+  delay(500);
+}

test_html.cpp

@@ -0,0 +1 @@
+#include <Arduino.h>