I don't have an answer to your question, but I would suggest you read this. Perhaps your question is too vague. Perhaps this isn't the best forum. perhaps you haven't shown you've tried to do anything yourself.
People often put as much effort into answering your question as you put into asking it.
There are only two hard things in computer science: cache invalidation, naming things, and off-by-one errors
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Devious Experiments for a Truly Passive Greenhouse!