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I've used https://github.com/stianeikeland/go-rpio to control my garage doors and this library https://github.com/kidoman/embd has some more advanced features which I've used for a thermostat solution.

Thanks! I'll take a look! I have an AstroHat on my Pi and I think it should be straight forward-ish using one of these.

+1 for embd. I've used it with great success.