Rainstick Engines & Simple Rapid Fire Spear Traps (Wiring Ideas, Terraria)

This is just a quick illustration of a wiring build idea. Fuller explanations in my written guide Fastest Engines - Measured with Hoiktroic Binary Skeleton Counter: \r
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+Video Index:\r
0:06 - Stump Engine (Crabs/Skeletons jumping up and down).\r
0:50 - Skeleton variant.\r
1:04 - Repeater (open ended design with continuous re-spawns dropping from the top).\r
1:26 - Overkill Spear Trap Battery (7 hits/s) - player/bat powered.\r
1:52 - Stingy Spear Trap Battery (3 hits/s) - player/bat powered.\r
2:43 - Continuous Drop - Boulders.\r
2:57 - Measuring boulder drop speed with hoiktronic counter.\r
3:26 - Boulder powered ive block down-elevator (60tiles/s, i.e. faster than falling).\r
3:39 - Measuring crab free-fall (top) speed (37tiles/s, same as all mobs and player).\r
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+ Hoiktronic Counter explained & other rapid in-game engines: \r
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+ Credits:\r
All footage shot in Terraria 1.2.4.1 for PC.\r
No mods or 3rd party content!\r
Game IP belongs to Re-Logic.\r
Music from Terraria Soundtrack Volumes 1 & 2 \r
by Scott Lloyd Shelly (Resonance array):\r
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And desert theme from Terraria for consoles.\r
Video captured with Fraps, edited in trakAxPC.\r
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+ Member of T-MEC (Terrarian Mechanical Engineering Corps) discussion group -