An electronic loop uses PSCN and NSCN to create a continuous circle of electricity, almost like a slower battery.

To create one, use two pixels of PSCN and two of NSCN next to each other. PSCN can conduct to NSCN, however NSCN cannot conduct to PSCN. Therefore, placing metal in a circle (or square) with these two particles included will cause the spark to only flow one way.

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Crossovers

Walls can overlap each other. This means that you can access two different switches using the same section.

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This can also be done using Instant.

Electronic timers

Many have been requesting timers. Conductors which speed up or slow down spark. Here's the thing though: A timer can easily be made using walls and water.

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As for speeding up spark, simply use a conducting wall or INST.