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Yep, it should show on the screen but unfortunately the camera refresh rate is out of sync with the screen's refresh rate so it's a bit hard to see. I need to read the datasheet again and drop the screen's refresh rate - I tried adjusting the camera's instead but it was never quite right.

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Can you cheat and just repeat the same letter a few times, like "Hello!!!" -> "HHHeeellllllooo!!!" or it shows a dark frame between leters?

Getting the data onto the screen is fine, and IRL I can't see any flicker, but the OLED screen itself is apparently refreshing at something like 107 or 133 Hz.

One way to potentially resolve this is to place the setup in a darker place and/or add a piece of tinted transparent material in front of the camera. The camera will automatically adjust the shutter speed (not the frame rate) because of the reduced light to 1/30 or so which will allow more of the screen to be captured.

Ah, just seen your comment, try to use obs and adjust the rate from there before streaming it.

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