Weather-Micropython-HackConRD2025
by jrgdiaz
An educational IoT project and CTF badge demonstrating how to program a weather LED map using MicroPython on an ESP32C3 microcontroller.
CTF e introducción a desarrollo IoT con MicroPython para HackConRD2025
Primary Use Case
This tool is designed for learners and security enthusiasts interested in IoT development and security, providing hands-on experience programming an ESP32C3 with MicroPython to display real-time weather data. It is ideal for participants of HackConRD 2025 and those looking to explore firmware programming and IoT security through a practical CTF challenge.
- Programming an LED weather map on ESP32C3 using MicroPython
- Integration with OpenWeatherMap API for real-time weather data
- Step-by-step IoT development tutorial
- Firmware programming and deployment on ESP32C3
- Wi-Fi enabled IoT device setup
- Includes CTF challenge focused on IoT device reverse engineering
- Supports rshell for serial communication and file management
- Bilingual tutorial with Spanish and English resources
Installation
- Install rshell via pip: python3 -m pip install rshell
- Connect the ESP32C3 device to your computer using a USB-C cable
- Identify the serial port of your device (e.g., COM4 on Windows)
- Start a serial connection using rshell: rshell -p <your-serial-port> -b 115200
- Ensure MicroPython firmware is installed on the ESP32C3
- Obtain an API key from OpenWeatherMap
Usage
>_ python3 -m pip install rshellInstalls the rshell tool for interacting with the ESP32C3 device over serial.
>_ /Library/Frameworks/Python.framework/Versions/3.11/bin/rshell -p <tu-puerto-serial> -b 115200Starts a serial shell session with the ESP32C3 at 115200 baud rate.
- Leverage this tool as a hands-on training platform to simulate IoT device exploitation and defense scenarios in purple team exercises.
- Integrate the CTF challenges with red team IoT attack simulations to improve real-world adversary emulation.
- Use the MicroPython firmware environment to develop and test IoT-specific detection signatures and anomaly detection rules.
- Expand the bilingual tutorial to include IoT threat hunting and incident response workflows for blue team skill enhancement.
- Incorporate the tool into IoT security awareness programs to educate developers and operators on secure firmware programming and attack surface reduction.
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