HDMI video output

Look What I’ve Done
1

The Arduino MKR Vidor 4000 can generate HDMI video output using its onboard FPGA. I’ve created a XOD library to enable xoders to make use of some of the graphics capabilities of the Vidor 4000:
https://xod.io/libs/wayland/vidor-graphics/

The HDMI output has a resolution of 640x480 pixels. On my monitor the images are auto-stretched to fill the display. Here are some examples:
fonts
diagonal_lines
concentric_circles
bayer_mosaic

The functionality of the library is limited to the methods in the underlying Arduino library. Currently there are action nodes for drawing:

  • pixels
  • lines
  • rectangles
  • circles
  • text
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To add to what Matt is doing with the MKR Vidor 4000 board - I’ve been investigating the M5Stack Atom Display module, which includes an ESP32 module, FPGA and HDMI driver in a tiny package. The Atom display can drive an HDMI display up to 1280 x 720 pixels - where one can trade off resolution and frame rates - shown driving a 8.8" 1920 x 480 HDMI display at 60 fps. There is a useful Arduino library available (M5GFX - https://github.com/m5stack/M5GFX) - derived from LovyanGFX (https://github.com/lovyan03/LovyanGFX) - next challenge is to convert to XOD.

Could be very useful for XOD-based programming of very compact embedded devices where a bigger display screen would be useful.

IMG_5831
IMG_5831480×640 91.1 KB

Atom_Display
Atom_Display800×800 71 KB

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