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Ronan MINGON
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  • Aug 14,2025
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ESP32 RS485 Hacker Suite – Sniff, Inject, Control

A powerful WiFi-connected ESP32 tool that lets you sniff, inject, and manipulate RS485 traffic in real-time, controlled via a mobile app.

ESP32 RS485 Hacker Suite – Sniff, Inject, Control
 
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Hardware Components

  • ESP32 Wroom32D

    X 1 fenxiang

Story

This project is a hardware hacking toolkit using an ESP32 microcontroller that allows you to interact with RS485-based systems — commonly used in industrial automation, building control (e.g., elevators, HVAC, door systems), and legacy equipment. It includes: • Dual RS485 transceivers • WiFi interface via mobile app • Hex-level sniffing and injection • Preset command storage • Baud rate configuration • History logging ? Why RS485? RS485 is widely used in critical systems — but often lacks encryption or authentication. This makes it an excellent candidate for research, diagnostics, and security testing. From industrial MODBUS networks to unauthorized door controllers, there are tons of real-world applications.

Code

  • repository

    https://github.com/rmingon/rs485-spy-injector
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Schematic and Layout

  • Repository

    https://github.com/rmingon/rs485-spy-injector
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CAD-Custom parts and enclosures
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License: CERN Open Hardware Licence

ESP32 RS485 Hacker Suite – Sniff, Inject, Control

A powerful WiFi-connected ESP32 tool that lets you sniff, inject, and manipulate RS485 traffic in real-time, controlled via a mobile app.

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