Horribly flickery LED horse-race star strip with schematic. (Epilepsy risk)

The visual appearance of this LED strip is actually very good, with big clusters of bright and colourful LEDs that emulate a strip of coloured lamps. Sadly the control system uses polarity reversal at mains frequency to switch between two channels, so the end result is violent 50/60Hz flicker that is quite annoying to say the least.
Sorry for the loss of focus in the middle of the video, I'm still getting used to the new set-up.

This strip would actually be quite nice if it was just static, but as the resistors are rated for half wave use it would not be easy to use it with a different supply.

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