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Download the latest version of Ground Control for Mac from the releases page. Use the .dmg file.
Install Ground Control by moving it into your applications folder.
Launch Ground Control by right clicking the icon in your applications folder and selecting "Open". You can also launch Ground Control by double clicking the icon, but you may see a security warning which won't let you run the program.
Install Homebrew by the command /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" in the command prompt.
Install Kivy dependencies by running the command brew install sdl2 sdl2_image sdl2_ttf sdl2_mixer gstreamer from the command prompt
Install Cython with the command pip install -I Cython==0.23
Install Kivy with the command USE_OSX_FRAMEWORKS=0 pip install kivy
Install PySerial with the command pip install pyserial
Download the latest version of the Ground Control source code from https://github.com/MaslowCNC/GroundControl using the "Clone or download" button on in the upper right of the screen.
Launch Ground Control using the command python main.py from within the Ground Control folder which contains the file main.py
If the window doesn't repaint after being resized then it's possible you have pygame installed and being used as the Kivy Window Provider instead of SDL2 - you will see "...[Window] Provider: pygame" in the startup messages. Fix is to run:
pip uninstall kivy
pip uninstall pygame
USE_OSX_FRAMEWORKS=0 pip install --no-cache-dir kivy