The chip was first flashed without a bootloader, a full image with the bootloader was found, after wrangling a single byte into place, had a working Crazyflie radio made from a wireless mouse dongle. Getting the Crazyradio firmware onto this proved to be a little harder than soldering some magnet wire onto a few pins. To get this radio chip working with his computer, simply needed to break out the SPI pins and wire everything to a Bus Pirate. The board inside the Logitech unifying receiver is a simple affair, with some pads for the USB connector, a crystal, the nRF24LU1+ radio module, and a few passives. No matter the dongles for Logitech wireless keyboards and mice use the same radio as the Crazyflie and can be modded to make this quad fly. didn’t figure out he wanted the USB dongle (the Crazyradio) that can control this quad until after he used his gift code to claim his Crazyflie quad. But it can also be controlled by a PC with USB dongle and an nRF24LU1+ SOC. This quadcopter ships with the intention of being controlled by your smartphone. Last week we gave away a few Crazyflie 2.0 quadcopters to some cool Hackaday Prize entries.
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