NanoDLP Display Engines

One of the basic requirements of the LCD 3D printers are to display object as sliced frames, NanoDLP supports different display engines that could be used in different situation.

NanoDLP supports many way to display images, this post try to explain how each one works, what is the best and also give a workaround for cases which one engine does not work well enough.

BCM (DispmanX)

It is a way to communicate directly with Raspberry Pi (Broadcom SOC) to display images. Performance great but only works on Raspberry Pi.

No option needed to enable it, it automatically being used if other display engine does not enabled manually.

Only reason not use it on Raspberry Pi is when NanoDLP DisplaymanX is not compatible with your display in forms of reliability issue.

Framebuffer

This is very basic form of updating the display engines. Just need to put correct path on Linux to enable it instead of BCM.

OpenGL

It is the desktop-only solution for a display engines, due to possible timing and reliability issue on desktop computers other way to control your NanoDLP suggested.

BCM (DispmanX) vs. Framebuffer vs. OpenGL

Comparison of the different engines:

SupportBCMFramebufferOpenGL
Raspberry Pi w. Server OSYesNoNo
Raspberry Pi w. Full OSNoYes (Should be Enabled)Yes
Linux – Server (ARM, AMD64)NoYesNo
Linux – Desktop (ARM, AMD64)NoYes (Should be Enabled)Yes
WindowsNoNoYes
MacNoNo (There are some workaround)Yes
Performance (FPS)GreatGoodGood
CompatibilityGoodGreatGood
StabilityGreatGreatGood

To use NanoDLP DSI HMI, you may have limitation on which interface you can use.

For more information and up to date documentation visit our display engine documentation.

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