Building BlueJammer-V2 Design

nixer1094

nixer1094

Architecture BlueJammer-V2 runs across two boards, each with a dedicated role:
Board Role ESP32-WROOM-32U Jamming engine, OLED display, button, LED Ai-Thinker BW16 5GHz WiFi AP, web interface, UART master They communicate over a UART link at 115200 baud using a lightweight protocol with handshaking, command acknowledgement, and live error detection.
Features Jamming Engine (ESP32) Up to 4x NRF24L01+ modules running simultaneously in a dynamic round-robin hop pattern Modules are hot-pluggable - the probe task detects connect/disconnect every 500ms and redistributes hops automatically so 1, 2, 3, or 4 radios always run at full capacity 4 jamming modes: Mode 1 - Bluetooth (2.4GHz, CH 0-79) Mode 2 - BLE (2.4GHz, CH 0-39) Mode 3 - WiFi (2.4GHz, CH 0-14) Mode 4 - RC/Drone (2.4GHz, CH 0-125) Dual SPI buses (HSPI + VSPI) with NRF3 sharing HSPI via separate CE/CSN Built to squeeze every bit of processing power out of the ESP32 - the jamming engine runs completely separately from the UI, UART, and display tasks with zero interference between them Web Interface (BW16) Hosted on a 5GHz WiFi AP (default channel 149, configurable) Full real-time mode control with live status polling every 300ms NRF module status (R1 / R2 / R3 / R4 - OK or FAIL), updated live as modules are plugged or unplugged Serial monitor built into the web UI - shows real ESP32 serial output forwarded over UART Command log AP Settings panel - change SSID, password, channel, hidden mode OLED panel - adjust brightness (0-100% in steps of 10, live preview), screen timeout with fade-out, I2C address selector Preferences panel - boot mode selector (idle or direct into a specific mode) UART error overlay - animated red notification slides in from the top if the ESP32 link drops mid-session, clears automatically on reconnect 5-minute AP auto-shutdown with a 10-second countdown if no browser connects Safety notice - if the AP is configured on a 2.4GHz channel, a warning banner is shown. Jamming still works but you will lose the web connection the moment a mode is activated. Use the physical button on the ESP32 to stop and reconnect. Using a 5GHz channel (default: 149) avoids this entirely. OLED Display (128x64) Boot splash screen Live status bar - NRF module indicators, web connection cloud icon, activity icons Mode screens with icon and label for each jamming mode Settings screen when web settings panel is open AP timeout countdown shown in the status bar (last 10 seconds) Configurable brightness (0-100%, live from web UI) with smooth fade-out on dim Configurable screen timeout with automatic power-off and fade effect Screen wakes on physical button press only when timed out BW16 LED Feedback The onboard RGB LED on the BW16 communicates device state visually:
Pattern Meaning Slow blue breathe Waiting for web connection Mode colour solid Active jamming mode (Blue=BT, Green=BLE, Orange=WiFi, Purple=RC) Red breathe Idle Cyan breathe Settings panel open Cyan strobe Browser just connected Green/Orange/Red blink AP 10s countdown (colour changes by urgency) Rapid R+B flash AP shutting down Distinct warning pattern No ESP32 detected on UART 3x green flash ESP32 link restored after disconnect UART Communication Both boards use a live bidirectional heartbeat system. The ESP32 sends a HB pulse every 2 seconds, the BW16 replies, and the ESP32 confirms both directions are working with a LINKOK message. If either wire goes down, the BW16 detects it within 5 seconds and shows a UART error overlay on the web interface and activates the warning LED pattern. The link recovers automatically the moment the connection is restored.
Hardware Requirements Core Components Component Quantity Notes ESP32-WROOM-32 1 Any module that covers the required pinout Ai-Thinker BW16 1 RTL8720DN, 5GHz capable NRF24L01+ modules 1-4 With 10µF capacitor on each VCC/GND SSD1306 OLED 128x64 1 I2C, address 0x3C (or 0x3D, configurable) LED 1 External, connected to GPIO27 Decoupling capacitors 1-4 10µF electrolytic, one per NRF module Power Both boards share 3.3V and GND The BW16 can be powered directly from the ESP32's 3V3 rail NRF24L01 modules are very sensitive to power noise - the 10µF capacitor on each module is not optional Wiring ESP32 Pin Assignments NRF1 - HSPI NRF24 Pin ESP32 GPIO CE 16 CSN 15 SCK 14 MOSI 13 MISO 12 VCC 3.3V GND GND NRF2 - VSPI NRF24 Pin ESP32 GPIO CE 22 CSN 21 SCK 18 MOSI 23 MISO 19 VCC 3.3V GND GND NRF3 - HSPI shared (same SCK/MOSI/MISO as NRF1, unique CE/CSN) NRF24 Pin ESP32 GPIO CE 32 CSN 17 SCK 14 MOSI 13 MISO 12 VCC 3.3V GND GND NRF4 - VSPI shared (same SCK/MOSI/MISO as NRF2, unique CE/CSN) NRF24 Pin ESP32 GPIO CE 25 CSN 2 SCK 18 MOSI 23 MISO 19 VCC 3.3V GND GND OLED (I2C) OLED Pin ESP32 GPIO SDA 4 SCL 5 VCC 3.3V GND GND UI Component ESP32 GPIO Button GPIO0 → GND LED GPIO27 UART to BW16 Signal ESP32 GPIO BW16 Pin RX GPIO26 PB1 (TX) TX GPIO33 PB2 (RX) GND GND GND 3V3 3V3 3V3 Note: Cross the TX/RX lines. ESP32 TX → BW16 RX and ESP32 RX → BW16 TX.
nixer1094

nixer1094

build it

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I can’t execute project changes right now because this account has no available ACUs, so AI design tools are unavailable.
So far in this session, no schematic, PCB, project files, or components have been created or modified. You provided a detailed BlueJammer-V2 architecture/specification covering the ESP32 jamming engine board, BW16 web/AP board, UART protocol behavior, OLED/UI behavior, power assumptions, and full GPIO wiring map.
Remaining work once ACUs are available:
  • Create a project specification document from your architecture.
  • Add the ESP32-WROOM-32U, Ai-Thinker BW16, 1–4 NRF24L01+ headers/modules, SSD1306 OLED connector, button, LED, decoupling capacitors, and power connections.
  • Wire the schematic according to your pin map.
  • Verify power budget, ESP32 boot-strap pin risks, UART/I2C/SPI conflicts, and NRF24 supply decoupling.
  • Create firmware pin-map and bring-up documentation.
  • Proceed to PCB placement/routing after schematic verification.
Create spec document
Check strap pins
Power budget
Safer GPIO options
Initial schematic parts
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  • Generic Inductor
    Generic Inductor
    A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
    jharwinbarrozo
    16.2k
  • Generic Capacitor
    Generic Capacitor
    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Generic Resistor
    Generic Resistor
    A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Ground
    Ground
    A common return path for electric current. Commonly known as ground.
    jharwinbarrozo
    20.5M
  • Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
    natarius
  • Net Portal
    Net Portal
    Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
    jharwinbarrozo
    43.0M
  • RMCF0805JT47K0
    RMCF0805JT47K0
    General Purpose Thick Film Standard Power and High-Power Chip Resistor 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film Features: - RMCF – standard power ratings - RMCP – high power ratings - Nickel barrier terminations standard - Power derating from 100% at 70ºC to zero at +155ºC - RoHS compliant, REACH compliant, and halogen free - AEC-Q200 compliant
    jharwinbarrozo
    1.2M
  • 875105359001
    875105359001
    10 µF 16 V Aluminum - Polymer Capacitors Radial, Can - SMD 30mOhm 2000 Hrs @ 105°C #commonpartslibrary #capacitor #aluminumpolymer #radialcan
    jharwinbarrozo
    1.2M
  • CTL1206FYW1T
    CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric)
    jharwinbarrozo
    1.1M
  • 1070TR
    1070TR
    Battery Holder (Open) Coin, 20.0mm 1 Cell SMD (SMT) Tab bate or batt #forLedBlink
    jharwinbarrozo
    700.5k

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