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Make: Technology on Your Time Volume 31 by Mark Frauenfelder

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Phil Jermyn (QuadPod, top right)

Getting Started with Multicopters

Tips on how to build, buy, fly, and spy with multirotor R/C helicopters.

By Frits Lyneborg

A MULTICOPTER IS A FLYING ROBOT resembling a wagon wheel — without the wheel. It has a central hub with electronics, power, and sensors, onto which are mounted arms that hold propellers to provide lift. The number of arms gives the name: a tricopter (trirotor) has 3 arms, a quadrocopter or quad-copter (quadrotor) has 4, a hexacopter 6, and an octocopter 8. There are other variations, but these are the most popular setups.

They’re also called multirotors, which arguably is the correct term, ...

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