This is my friend's DIY work,
It is similar to the smoke from e-cigarettes and model tanks. It has a buzzer and an orange LED light that can be reused (but I think it could be damaged by throwing it hard).
This video about he test it in his house, apparently, it doesn't hurt the wood floor.(LED and smoke generator)
The effect is actually quite striking, at least for me.
He gave me a DIY flame suppresser with smoke function, similar in principle and parts.To be honest, my English is not very good, so if I say something wrong, please point it out to me
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