TFT display for GCode visualization

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    For my powder bed printer, I find it useful to have an on-board visualization system of the model that has been rendered under the powder.

    (duplicate thread is on RepRap forums – check there for the FDM perspective on this:,453570 )

    I think this might be generally useful. I used the Adafruit ST7735 for my project, but the codebase should be readily adaptable to any full color TFT.

    Time lapse video of the visualization system running:

    And before you ask, yes, that is a 3D projection with Z shading on an Arduino Mega 2560.

    GitHub link to primary code checking: (GPLv2)


    Is the video you showed a timelapse or is it real time. How long does it take per unit to render. It looks interesting and useful.


    Yes, that is a time-lapse. Serial communication is the biggest overhead, actually rendering the command takes less time than receiving it over 115200n81.

    That said, this was with a ‘null axis’ firmware – all the axes ‘instantly’ go to their target positions.

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