• The Crazyflie Nano Quadcopter

  • The Crazyradio 2.4GHz radio USB dongle

Bitcraze and the Crazyflie

Ever wanted a development-kit that flies? We did, so we developed the Crazyflie Nano Quadcopter! The goal with the Crazyflie was to give users a flying base for their development. We wanted to create an open source platform that would be fun to use, as well as give the users the possibility to work on and experiment with a wide range of features and areas.

In order for users to quickly get going with their flying and development we provide a virtual machine with everything that is needed, documentation of the project and design as well as a range of different software. Flying is done from our main client software where you can use a variety of joysticks as well as the Leap Motion. You can also use our custom SD-card image for flying from the Raspberry Pi or our Android client for flying from your smartphone.

We are constantly working on improving the design and trying to come up with fun new hacks and experiments that we implement and show users how to do. Through our community everyone get the chance to join in the discussion and development as well as take part and contribute to all the documentation.

Crazyflie 2.0: Qi inductive charging expansion

One of the boards that we have been working on is an inductive charging expansion for the Crazyflie 2.0. Some of you might remember way back when we did an inductive charging hack for the Crazyflie. It’s always been very compelling with wireless charging, we’re not sure why. Maybe it’s because it feels a bit magic :-) For our inductive charging expansion board we choose the Qi standard, which is used in many cellphones today and finding a cheap charger for it is pretty easy. The board is designed around the BQ51013B Qi chip from Texas Instruments. Our initial testing of the board shows that it’s operating at about 65% efficiency and manages to provide an output of around 1A at 5V. The board weights about 5g, but we might be able to improve that  a bit, and is 30x30mm. Now all we need is a dock that we can automatically land on :-)

Here are some images of our current prototype, the final version will look a bit sleeker. The jumper sticking out on the side is for current measurements. It won’t be mounted in the final version, but the pads will still be there. So if you would like to measure the current you can cut the track and solder a jumper for it.

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