The Mocha

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The Mocha is the best model for people most interested in flying - we think it is the most capable and fun R/C aircraft ever! This version will include everything you need, including the fully-assembled Quadshot, a radio transmitter, lithium-polymer battery, and charger. While ready to fly out of the box, the Mocha still has room to hack! It includes a streamlined version of Lisa (called Lia) featuring through-hole solder connectors, which make it simpler to connect up accessories like GPS or XBee modules. To keep costs down, Lia does not include some components that are not used by the Quadshot, namely the magnetometer and barometer sensors, and CAN and I2C communication support.

Brain

The Quadshot differs from a typical remote-controlled airplane or helicopter in a big way: it has a brain! Our brain is called Lia.

Like the flight computer on an advanced aircraft or unmanned aerial vehicle (UAV), Lia is equipped with a sensor suite called an Inertial Measurement Unit (IMU). The IMU contains 3-axis solid-state accelerometers and gyroscopes to keep Lia up-to-date on which way she is pointing and how fast she is rotating.

Lia combines all of this information with your commands and then decides what to do hundreds of times per second. The advantage of being so brainy? You can tell the Quadshot to hover like a helicopter, fly slowly and steadily like a trainer airplane, or give you full control for aerobatics - all at the flip of a switch.

Lia may be small, but she’s powerful - and hackable! Lia’s hardware is open (OSHW), and she runs flight software based on the Open-Source Paparazzi project - which means you have the power to make changes, and also benefit from improvements made by others in the community.

Airframe

We designed the Quadshot’s airframe to be lightweight, yet durable. It consists of a one-meter (39 inch) wing, four pylons with motors and propellers, an enclosure for the electronics, and a standard threaded mount suitable for a small camera. The wing is made out of EPP foam, with a carbon-fiber spar for strength. The pylons are plastic-reinforced foam, and act as landing gear, motor mounts, and tailfins. They are set farther apart on the bottom of the wing to give your camera a clear view.