Redstone Tutorial - Hidden Arrow Defence System

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In this episode of Lets Get Better at Redstone, I display a way to create a very fast and efficient arrow defence system that you can incorporate into your house.

Minecraft Wiki Page:
http://www.minecraftwiki.net/wiki/Redstone_Circuits

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The music comes from the in-game Minecraft soundtrack. If you would like to listen without having Minecraft playing, you can download it here: http://c418.bandcamp.com/album/minecraft-volume-alpha

Music by Approaching Nirvana (www.youtube.com/ApproachingNirvana)
Song: I Dream of Ibiza (Extended Mix) by Approaching Nirvana // Buy Here! http://itunes.apple.com/us/album/i-dream-of-ibiza-extended-mix/id479060153?i=479060438

Thanks!
~MGS