Nice. It would be helpful to provide a bit of documention, such as how-to-use, etc. I don't see a link there on your Etsy page. There are many different fog machines in the wild and rather than answer how to work with each one, a single document can explain the basics so that the DIY'er can take it from there. What may be obvious to you is not always obvious to someone who wants to implement your solution. Just a couple ideas...
Keep inventing!
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