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Nextion Emulator for CEC Firmware — Alpha1 Release Brings uBITX Simulation to Desktop

Amateur radio enthusiasts now have access to a powerful new tool for interfacing with CEC firmware. Developer AJ6CU has released the Alpha 1 version of the Nextion Emulator for CEC Firmware, a cross-platform Python application that brings enhanced functionality to CEC-equipped radios.

The developer AJ6CU has just published the Alpha 1 release of NextionEmulatorforCEC_Firmware, a new emulator designed to run the CEC radio-firmware UI on a desktop — no hardware radio or Nextion display required. This Emulation Tool targets users of CEC Firmware (for radios like uBITX) but who want a software-based interface. As per the release notes, it’s a Python-based project requiring Python 3.11 or later.

Nextion Emulator for the CEC firmware.

Desktop Testing and Convenience

Using physical Nextion displays or radios for every test and configuration can be cumbersome or risky — misconfigurations may brick the radio, and screen-based debugging can slow development cycles. With this emulator, enthusiasts and developers can:

  • Test the CEC Firmware UIin a desktop environment (Windows, macOS, Linux) without needing actual hardware.
  • Simulate Nextion HMI behavior before flashing to a real radio/display — useful for UI tweaks, debugging, or simply exploring firmware features.
  • Backup and restore configuration via an .ini file, including com port, channel settings, scanning sets, and calibration/BFO settings.

In effect, this emulator lowers the barrier for experimentation and customization for amateur radio and DIY radio-firmware users.

CEC Firmware and Nextion Displays

The idea of pairing a Nextion display with CEC firmware to create an HMI for uBITX radios goes back many years. For example, installations of Nextion LCD + CEC firmware on uBITX are documented in the ham-radio DIY community.

The traditional setup requires two firmware uploads — one for the radio and one for the Nextion display. However, using an emulator like NextionEmulatorforCEC significantly simplifies testing and UI prototyping, without the risk or hassle of handling physical displays.

Alpha Release Status

As an Alpha release, users should expect this to be early-stage software. The developer encourages the amateur radio community to test the software and report any bugs or issues encountered during use. This feedback will be valuable for improving future versions.

Download and More Information

The Alpha 1 release is available for download from the project’s GitHub repository at github.com/AJ6CU/NextionEmulatorforCEC_Firmware/releases/tag/Alpha1.

This initial release marks an exciting development for the CEC firmware community. The Nextion Emulator provides ham radio operators with enhanced control and backup capabilities for their equipment, all through an open-source, cross-platform solution.

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Prabakaran
Prabakaran is a seasoned author and contributor to leading electronics and communications magazines around the world, having written in publications such as Popular Communications Magazine (USA), ELEKTOR (UK), Monitoring Times (USA), Nuts & Volts (USA), and Electronics For You (India).
https://vu3dxr.in/

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