Their creation is a custom-built quadcopter made with carbon fiber that weighs just 2.6kg (about 5.7lbs), but which has about 4 square meters (about 43 square feet) of solar panels. By testing and ...

What’s the cheapest quadcopter you can build? As [Circuit Digest] demonstrates ... pressure and compass modules, as well as custom boards. As a derivative of the Bitcraze Crazyflie project ...