Ultra-low-def Video

A project log for LED Oscilloscope Mk. II

Revamping a classic

Ted YapoTed Yapo 11/21/2018 at 05:512 Comments

I threw together a quick test of video on the LED screen.  It's not great, but then again, it's only a 0.000512 megapixel display!

This was an ugly hack.  A python program on a PC uses opencv to read video frames from a webcam, resize them to 32x24, then transmit the upper 16 rows of the image over a serial port at 1M baud.  On the other end, an arduino nano collects the data into one of two ping-pong buffers while the other buffer is displayed on the LEDs.

With a diffusing screen, the video looks better to the eye, but on camera, the raw LEDs look better (although a little sparse).

I might be done with display tricks at this point.  Maybe.


Jan wrote 11/21/2018 at 11:38 point

Nice! The different brightness-levels make video easily recognizable even at this low def!

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Dr. Cockroach wrote 11/21/2018 at 09:02 point

Oh, that's cool :-)

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