Here's some delicious spaghetti from last year. The only patches not taken over by spaghetti are the remains of ore patches (top left, top right, bottom middle, bottom right (with added buffer for no real reason than to take up space)).

https://puu.sh/uXXPH/610a50e53f.png

The route taken by red ...

So for no particular reason other than to see if I could, I took a particular animated gif used on another forum I frequent and tried to see if I could recreate it in Factorio.

http://i.imgur.com/BRamHC0.gif

Note: It was made in a Factorissimo building as the innermost lights were out of range ...

Output to a chest in stacks of 2, 4, 5, 8 or 10 (basically any denominator of 40). Two Inserters pull from this chest, one works if the amount is stack size set on first Inserter (full stack moved) which moves it back to the Centrifuge, the other Inserter works when U-235 = 1 which is the final ...

Figure I'd add my own version onto this.

http://puu.sh/vMyj1/9b6b4e2162.png

The combinator is set to U-235 < 40, with the output looped to the input, and acts as a counter. The inserter to the right of it is active as long as the count is 0, with a stack size of 1. The combinator receives pulsed ...

Signed up after spending a while utterly baffled and eventually finding this thread.

We set up a nuclear plant at our base, but noticed something odd about the heat pipes. Here's a screenshot of the heat exchanger layout for reference (yes, I'm aware of the many ways in which it could be improved ...