Crazyflie 2.0 production tests
We kicked off the Crazyflie 2.0 production about one week ago and we are still working hard on ensuring the best possible quality of the production. To do so we have a test specification/plan that is...
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Crazyflie 2.0 bootloader and USB
The production of the first Crazyflie 2.0 batch is still on track. Currently all the components are being purchased and when they are all in, the assembly will start. We are still busy preparing things...
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Suggest a name for our expansion boards and win a Crazyflie 2.0
As everyone probably knows by now, one of the new features of the Crazyflie 2.0 is the improved expansion port. It’s something that we’ve been putting a lot of effort in and we’re really looking...
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Expansion board naming vote
Wow, we are a bit overwhelmed with all the naming suggestions we got for our expansion board last week. It’s fun to see so many people joining in and having an opinion, thanks to everyone that dropped...
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A week in Shenzhen
Starting up production and doing the first batch of a product is always problematic, no matter how well you try to plan it. So just like for the Crazyflie 1.0, we decided to pack our bags and leave for...
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Hectic release week!
This week is going to be an exiting week! Crazyflie 2.0 has started to ship and we are pushing out a lot of code during the week. We wish that we would have gotten more time to work on the code before...
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Crazyflie 2.0 radio communication
The Crazyflie 2.0 supports two types of radio protocols out of the box: ESB (Enhanced ShockBurst) for Crazyradio/Crazyradio PA USB dongle compatibility and Bluetooth LE for mobile devices. All...
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Measuring propeller RPM: Part 1
We have had numerous request to get a transfer function from the motor PWM output to propeller RPM. The next step would then be to get the propeller RPM to thrust transfer function as well. With that...
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Refocusing for 2015
During the last week there’s been lots of work, but we don’t have that much to show for it. We’ve spent a lot of time discussing what we should do during 2015. Last year there was a clear focus:...
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Measuring propeller RPM: Part 2
We finally got some time to follow up on the previous blog post Measuring propeller RPM: Part 1. In this post we will continue where we left of and describe a little about the software we have...
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Measuring propeller RPM: Part 3
Finally here is the last, and probably most interesting part of the “Measuring propeller RPM” series, see part 1 and part 2 to catch up. Now it is time to gather some data and display what we get. As...
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Input-device MUX
When the schools closed for vacation last week Minc (the company accelerator where we have our office) hosted a “bring-your-children-to-work” day. The original idea came from Fredrik who works at the...
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Crazyflie 2.0 decks
Some time ago we decided that it would be nice to have a name for the Crazyflie expansion boards, a bit like the Arduino shields or the Beagle bone capes. We organized a poll on our website, that ended...
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Modular Crazyflie client with ZeroMQ
Lately we have merged a new input subsystem to the Crazyflie python client, it allows for more flexible input configuration like connecting more than one gamepad in training mode, or having external...
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Crazyflie 2.0: Building a buzzer deck
While digging around in our office looking for a board we found a piezo buzzer we bought a while back. The reason for buying it was to test some buzzer functionality to the Crazyflie 2.0, but we forgot...
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DeviationTX and the Crazyflie
As many out there think is is more fun to fly the Crazyflie rather then develop upon it (like we do :-)) we have quickly looked at ways to pilot it with a RC transmitter. This forum thread is a good...
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Arduino day 2015 and Crazyflie glove controller
Last Saturday it was Arduino day 2015 and it happens that the Arduino office in Sweden is in the same building as ours. So we where invited and presented Crazyflie. It was a really fun event with a lot...
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Crazyflie client Chrome app
Recently I got a Chromebook, mostly out of curiosity for this odd “computer that runs only a web browser”. While playing with Google dev tools I quickly saw a possibility to make a Crazyflie client as...
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Interfacing Crazyflie 2.0 with external motor controllers: Part 2 – Firmware
Continuing from last Monday post where the hardware wiring part was discussed we now move on to the software side. The brushed motors are controlled with a normal PWM where the duty cycle will adjust...
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Teacher/student mode for flying
A while ago we implemented something we called mux-mode for controllers, where the Crazyflie can be controlled from multiple controllers at once. Initially it was implemented the day before a...
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