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A project log for Pi Closed Captions

A system for adding closed captions to the composite video output of a raspberry pi

theloosearrowtheloosearrow 12/23/2021 at 22:180 Comments

A rough tutorial along with the necessary code to get this setup working has been uploaded to Github:

https://github.com/TheLooseArrow/PiClosedCaptions

On the hardware side its relatively simple: an arduino, an LM1881 sync separator chip, a diode, and a handful of resistors and capacitors:

The software and firmware which consists of python scripts and an arduino sketch can be found on the Github repo.

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