Candle2
GRBL control interface in Qt.
Candle 2 ----------- GRBL and GRBL-Advanced controller application with G-Code visualizer written in Qt. Forked from [denvi/Candle](https://github.com/Denvi/Candle). The project is written primarily in C++, distributed under the GNU General Public License v3.0 license, first published in 2019. Key topics include: candle, cnc, cnc-controller, cnc-machine, gcode.
Latest release: latest— Latest Release 20260621
June 21, 2026View Changelog →
Candle 2
GRBL and GRBL-Advanced controller application with G-Code visualizer written in Qt.
Forked from denvi/Candle.
Supported functions:
- Controlling GRBL-based CNC-Machine via console commands, buttons on form and numpad.
- Monitoring cnc-machine state.
- Loading, editing, saving and sending of G-code files to CNC-Machine.
- Visualizing G-code files.
- Height map.
System requirements for running "Candle2":
- Windows/Linux x86_x64
- CPU with SSE2 instruction set support
- Graphics card with OpenGL 2.0 support
- 160 MB free storage space
Build requirements:
Windows: Qt 5.15.2 with MinGW/GCC compiler
Linux: QT 5.12.2 with GCC
Downloads:
- Releases (Win & Linux): Candle 2
Candle 2 GUI:

Contributors
Showing top 11 contributors by commit count.
This article is auto-generated from Schildkroet/Candle2 via the GitHub API.Last fetched: 6/28/2026
