Tyler Brooks
Candle is a GRBL controller application that can be installed on Linux. While there is a lack of up-to-date tutorials or resources on how to install Candle on Linux, especially Ubuntu, there are some steps that can be followed. For instance, on a 64-bit OS, the following steps can be taken: $ sudo apt-get install qt5-default qt5-qmake libqt5serialport5-dev gksu make gcc g++ git $ git clone https://github.com/Denvi/Candle.git $ cd Candle/src $ qmake $ make. However, it is important to note that there might be issues with certain commands, such as the make command. Additionally, to run Candle on Raspberry Pi, specific commands need to be executed in a terminal, and it may be necessary to build it from source.
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What You'll Learn
GRBL Candle installation on Linux Mint Cinnamon 17
To install GRBL Candle on Linux Mint Cinnamon 17, you will need to follow a few steps. Firstly, ensure that you have the necessary dependencies installed. Open a terminal and run the following command:
$ sudo apt-get install qt5-default qt5-qmake libqt5serialport5-dev gksu make gcc g++ git
Once the installation is complete, you can clone the GRBL Candle repository from GitHub. Use the following command:
$ git clone https://github.com/Denvi/Candle.git
Next, navigate into the "Candle/src" directory:
$ cd Candle/src
Now, you will need to generate the Makefile using qmake:
$ qmake
Finally, compile the code using the "make" command:
$ make
At this point, you should have GRBL Candle installed on your system. However, note that some users have reported issues with the "make" command, encountering errors during the compilation process. If you encounter any problems, ensure that you have followed the steps correctly and that your system meets the necessary requirements. You may also refer to the Linux Mint forums or other resources for troubleshooting guidance.
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Install Candle on Ubuntu
To install Candle on Ubuntu, you will need to follow a few steps. Firstly, ensure you are comfortable with the shell and are able to install dependencies and build from source if needed.
Next, open your terminal and enter the following commands:
- `sudo apt-get install qt5-default qt5-qmake libqt5serialport5-dev gksu make gcc g++ git`
- `git clone https://github.com/Denvi/Candle.git`
- `cd Candle/src`
- `qmake`
- `make`
Note that you may need to follow additional steps after the above commands, depending on your specific use case.
One user reported that they needed to take extra steps when setting up the connection on Ubuntu 22.04 with their PROVerXL 4030. They mentioned that the Serial Protocol was not visible in Candle's UI, and they had to address this issue before proceeding.
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Running Candle on Raspberry Pi
Candle is a GRBL controller application with a G-Code visualizer used to control a CNC machine. It can be run on a Raspberry Pi, although it is recommended to use a Raspberry Pi 4 as older models may run sluggishly.
To install and run Candle on a Raspberry Pi, you can follow these general steps:
- Download the Candle software for Raspberry Pi from the official website or GitHub.
- Extract the zip files, which should include the necessary Candle files and folders.
- Open a terminal and navigate to the directory containing the extracted Candle files.
- Use the command "chmod +x Candle" to make the Candle file executable.
- Execute the Candle application by running the "./Candle" command in the terminal.
For a more comprehensive setup, you can follow these steps for a minimal Raspberry Pi 4 setup with Candle and firmware 1.1h:
- Image an SD card with the Raspbian Buster desktop operating system.
- Place an empty file named "ssh" in the "/boot" directory of the SD card.
- Boot the Raspberry Pi with an ethernet connection and determine its assigned IP address.
- Use SSH to connect to the Raspberry Pi: "ssh pi@
, with the default password "raspberry". - Enable the serial port for communication with the Protoneer CNC Shield by running "sudo raspi-config".
- Configure various options using "raspi-config", such as disabling the shell over serial and enabling the VNC server for remote desktop access.
- Adjust the memory split and display resolution using "raspi-config" under Advanced Options.
- Reboot the Raspberry Pi and connect to it using a VNC viewer.
- Open a terminal on the Raspberry Pi and install minicom: "sudo apt install minicom".
- Optionally, check if the serial communication with the Protoneer CNC Shield is working by running "minicom -D /dev/ttyS0" and pressing Ctrl-X to view the GRBL version.
Note that you may encounter issues depending on the specific version of Candle and your hardware setup. Ensure that your Raspberry Pi meets the system requirements for running Candle, including CPU and graphics card specifications.
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Compiling Candle from source
To compile Candle from source, you can follow these steps:
First, ensure you have the necessary dependencies installed. You can use the following command to install the required packages:
$ sudo apt-get install qt5-default qt5-qmake libqt5serialport5-dev gksu make gcc g++ git
Next, clone the Candle repository from GitHub:
$ git clone https://github.com/Denvi/Candle.git
Change into the source directory:
$ cd Candle/src
Now, you can use qmake to generate the Makefile:
$ qmake
Finally, compile the source code with the make command:
$ make
Note that you may encounter compilation errors or configuration problems, especially with the latest source code. For example, you may need to address an unknown optimization switch in the Makefile by erasing -Z7 from three places.
Additionally, Candle won't write the configuration file if you place it in a usual path like /usr/bin or /usr/local/bin. To resolve this, you can modify the source code to write the configuration file to your home directory under the ".config/Candle/" path:
#ifdef WINDOWS
M_settingsFileName = qApp->applicationDirPath() + "/settings.ini";
#else
M_settingsFileName = QDir::homePath() + "/.config/Candle/settings.ini";
#endif
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System requirements for running Candle
To run Candle, a GRBL controller application with a G-Code visualizer, on Linux, your system will need to meet certain requirements. Firstly, ensure that your Linux distribution is compatible with Candle, as it is not designed to be installed on a 64-bit OS.
For the installation process, you will need to execute specific commands in a terminal. The commands will include package installations using package managers like "apt-get" or "yum", depending on your Linux distribution. The required packages include "qt5-default", "qt5-qmake", "libqt5serialport5-dev", "gksu", "make", "gcc", "g++", and "git". These packages provide the necessary libraries and tools for compiling and running Candle.
Additionally, you will need to clone the Candle repository from GitHub using the "git clone" command, as indicated in the installation steps. Ensure that your system has Git installed to perform this step successfully.
In terms of hardware requirements, to run Candle with the highest settings, an AMD graphics card is recommended, specifically the AMD Radeon HD 8400 or higher. For the CPU, an Intel Core i5-680 or better is recommended. Candle requires a minimum of 4 GB of RAM, but 8 GB is ideal for optimal performance. Furthermore, ensure you have at least 12 GB of free disk space available for the installation.
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Frequently asked questions
To install Candle on Linux, you need to be comfortable with the shell and be able to install dependencies. You may even need to build from the source. Here are the steps:
- $ sudo apt-get install qt5-default qt5-qmake libqt5serialport5-dev gksu make gcc g++ git
- $ git clone https://github.com/Denvi/Candle.git
- $ cd Candle/src
- $ qmake
- $ make
The system requirements for running Candle on Linux are:
- Windows/Linux x86 CPU with SSE2 instruction set support
- Graphics card with OpenGL 2.0 support
- 120 MB free storage space
If Candle has been compiled for Raspberry Pi OS, use the following command in a terminal:
- cd
- chmod +x Candle
- ./Candle
