These seem to be the LED equivalent of the classic neon flicker flame lamps that used flame shaped electrodes in neon filled glass globes with an unstable discharge to create a flickering effect.

The colour of these is very good, and the use of a microcontroller opens up possibilities of the software evolving for a truly random effect as opposed to a repeating loop. That said, the loop in these units is long enough not to look too repetitive.

If you put a resistor in series with the module the flame effect still looks good at very low current, so there's a possibility the module could be used in a solar light in place of the existing LED if it has a diode and capacitor to stop it resetting. (The colour changing solar lights have that extra diode and capacitor.)

I'd like to thank Michael for sending me some of these. I had been looking at them while browsing AliExpress for other filaments. The sellers shop is here:-
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