The assemblers that are around the beacon are making: Electronic circuits, copper wires, and Automation Science packs.
I also threw in an efficiency module into the core.
Okay, so the core running DOES allow the beacon to do stuff. Unfortunately, this also means that NOTHING ELSE is running due to power demands...
When I first got it running, I thought it was just to make the linker or something (one-time investment for that specific core, if I break and replace it I'd need to pay the cost again), not that you need a constant stream of stone to keep it running (stone -> crystals -> memory/processing)
I'll just leave it unplugged (no fluid pipes running to it) until I get more power...
On a side note. Why does the Water pressurizer not like to output into a pipe?