My main station for an Engineer play through.
Top drone is a fast gunboat that starts off by dropping the mineral harvesters in the hopper, then goes hunting.
The factory drops autonomous drones that drill through the planet and then turn around and repeat. The little mining drones are a very effective but simple design with collision detection so they don't get locked together when there's a lot of them.
Collision detection triggers when they detect a friendly drone, so far, none of them have ever gotten permanently stuck.
Here's the miner without the skin. Doesn't need a tilt sensor, uses inverted VTOL thrusters to keep it oriented.