Original Designer: CiferTech

Original Project: https://github.com/cifertech/ESP32-DIV

Project Website: https://cifertech.github.io/ESP32-DIV/

The ESP32-DIV v1 Main Board is the central controller PCB of CiferTech's ESP32-DIV wireless research platform. The board combines an ESP32 microcontroller with a touchscreen interface, battery charging circuitry, USB-to-serial communication, storage and external hardware connections. It serves as the primary processing and control unit for the larger ESP32-DIV system.

The platform follows a modular architecture, separating the main controller from an expansion shield that provides additional wireless hardware interfaces. This allows the controller and expansion hardware to work together without placing every component on a single PCB.

The project is intended for educational purposes, wireless research and authorized hardware experimentation.

🎯 Features

📡 Wi-Fi

ToolDescriptionPacket MonitorReal-time waterfall graph across all 14 channels; optional PCAP logging to SDWi-Fi ScannerLists nearby networks with extended detailsBeacon SpammerBroadcasts fake SSIDs (custom or random)Deauth AttackSends deauthentication frames to disrupt client connectionsDeauth DetectorMonitors for incoming deauth attacksCaptive PortalAP + DNS + web server; clone networks and force sign-in pagesProbe FloodFloods probe requests to stress-test APsHidden SSID RevealerForces hidden networks to expose their SSIDWPS ScannerDetects access points with WPS enabledARP ScannerMaps all devices on a network with IP and MAC after joiningKarma AttackListens for probe requests and impersonates saved networks to auto-connect devices

🔵 Bluetooth

ToolDescriptionBLE ScannerDiscovers hidden and visible BLE devicesBLE SnifferTracks MAC, RSSI, packet count, and last-seen timeBLE SpooferBroadcasts fake BLE advertisementsSour AppleSpoof Apple BLE advertisements (e.g., AirDrop popups)BLE JammerDisrupts BLE and classic Bluetooth channelsBLE Rubber DuckyActs as a BLE keyboard; executes scripts from /ducky on SDAirTag SpooferBroadcasts fake AirTag signals into the Find My networkAirTag SnifferMonitors for AirTags in rangeSkimmer DetectScans for BLE signatures matching known card skimmer profiles

📶 2.4GHz / NRF24

ToolDescription2.4GHz ScannerSpectrum analyzer across 128 channels (Zigbee, custom RF, etc.)ProtokillDisrupts Zigbee, Wi-Fi, and other 2.4GHz protocolsESB SnifferPassively captures Enhanced ShockBurst NRF24 packetsESB ReplayReplays captured ESB packetsMouseJack ScanDetects vulnerable wireless mice and keyboardsMouseJack InjectInjects keystrokes into vulnerable wireless receivers

📻 Sub-GHz

ToolDescriptionReplay AttackCaptures and replays Sub-GHz commands (e.g., garage doors, remotes)Sub-GHz JammerDisrupts Sub-GHz communication across various bandsSaved ProfilesStores and manages captured signal profilesDe Bruijn / Brute ForceCycles through all possible fixed codes for Sub-GHz remotesJamming DetectorReceive-only monitor that detects Sub-GHz jamming attacks (e.g. car-fob jamming)

📺 Infrared (IR)

ToolDescriptionIR Replay AttackCaptures real IR presses, visualizes, replays, and saves to SDIR Saved ProfilesBrowses IR captures; preserves signal and carrier frequencyUniversal IR ControllerBuilt-in profiles, SD imports, favorites, and remote-style control

🧲 RFID / NFC

ToolDescriptionCard ReaderReads UID and tag identificationCard CloneCopies supported writable tagsDumpReads sectors/blocks when keys are availableDecode AccessInterprets access bits and ACL-style fields from dumpsEraseWipes supported writable tagsJam ReaderImpedes another reader with RF patternsTag DisruptAdvanced disruption flows for authorized physical testsDisrupt EmulateDisruption combined with emulation-style flows

🛰️ GPS

ToolDescriptionWardriverLogs GNSS position with Wi-Fi/BLE observations to SDSatellite ScannerShows satellites in view, signal strength, and fix diagnostics

Why was it built this way?

The design uses a separate main controller and expansion shield to keep the processing system independent from specialized wireless hardware. The ESP32 handles the primary processing and integrated Wi-Fi and Bluetooth connectivity. The display and touchscreen provide a direct user interface, while the storage and power-management circuits support portable operation.

This architecture also makes the platform easier to expand and maintain. Different hardware configurations can be developed without redesigning the entire controller.

System architecture

The main board acts as the central processing and user-interface unit. Its ESP32 manages the firmware and system operations, while the display and touchscreen provide visual feedback and interaction. The separate expansion shield accommodates additional wireless modules, allowing the overall platform to support different research configurations. This division keeps the primary controller organized while providing flexibility for future hardware revisions.

Educational use and safety considerations

The ESP32-DIV is presented exclusively for educational purposes, wireless research and authorized experimentation. Depending on the firmware and connected expansion hardware, the platform can perform operations involving wireless networks, Bluetooth devices, radio-frequency systems and other electronic interfaces. Misuse can cause wireless disconnections, radio interference, unauthorized access attempts, exposure of sensitive information or disruption of electronic systems.

Users should operate the hardware only with equipment and networks they own or have explicit authorization to test. Unauthorized interference and access may violate local laws and regulations. Use this hardware entirely at your own risk. PCB Showcase Hub and the original designer are not responsible for damage, interference, misuse or legal consequences resulting from unauthorized operation.

Credits and licence

This project was originally designed by CiferTech.

Original repository: https://github.com/cifertech/ESP32-DIV

The project is distributed under the MIT License. Please retain the original copyright notice and licence terms when redistributing or modifying the design. This publication is an independent educational showcase intended to introduce the PCB architecture and acknowledge the original creator. All original design credit belongs to CiferTech.