Well there's always one of these for each "corner" of the roof: https://www.hackster.io/hackershack/raspberry-pi-motion-tracking-gun-turret-77fb0b (View Post)
I was level according to the bubble thingamajig last weekend and despite that, water collected more near the rear of the drip pan instead of draining out the tube. After several years the bottom of t… (View Post)