That is awesome! I have made a similar door lock/unlock mechanism but I really am intrigued by the sprayer batcher... What flowmeter did you use for this?

I have also been thinking about building a custom pivot controller / dashboard which would require internet, but have used these devices for projects that need internet in the past: https://store.particle.io/collections/multiradio-satellite-lorawan/products/test-noram-muoncbkit-bundle

Their backend interface is really nice for connecting the hardware devices to software in the cloud / databases / etc.