Search found 1879 matches

by tobias
Mon Feb 18, 2013 1:24 pm
Forum: Developer Discussions
Topic: Add-ons!
Replies: 13
Views: 7692

Re: Add-ons!

That is as good as it gets with KiCAD for the moment. Could it be resized? The size from one tip to the other should be exactly 80mm.
by tobias
Sat Feb 16, 2013 12:53 pm
Forum: Developer Discussions
Topic: Add-ons!
Replies: 13
Views: 7692

Re: Add-ons!

I managed to export a DXF of the Crazyflie control board outline. I hope it is usefull. There are 1mm plated holes (finished: ~0.95mm) located 34mm apart in a centred square. The PCB is 1.6mm thick. There are some LEDs placed ~1mm from the hole edge towards the centre. Might be hard to get from my d...
by tobias
Sat Feb 16, 2013 12:33 pm
Forum: Developer Discussions
Topic: Controlling programatically
Replies: 3
Views: 2774

Re: Controlling programatically

It's not a problem to make the Crazyflie follow some commands but making it follow a predetermined path is a whole different story. This is a hot research topic. Now, ground mounted cameras are often used to determine the object position, like hawk-eye in tennis.
by tobias
Sat Feb 16, 2013 12:25 pm
Forum: General discussions
Topic: Make a TRI rotor!
Replies: 2
Views: 2485

Re: Make a TRI rotor!

Sound interesting but it is not something we are planning. I don't see any direct obstacles we a Crazyflie couldn't be modded to a TRI rotor. You would have to cut two arms and make a new one. The servo mechanism would be challenging though.
by tobias
Sat Feb 16, 2013 12:18 pm
Forum: General discussions
Topic: USB Controller
Replies: 12
Views: 8485

Re: USB Controller

Great that you are helping each other out! The CF Client is still under development so there might be some bugs, especially with the joystick configuration. We are working on catching those bugs. I have not experienced any "lag" when using the PS3 controller in BT mode. What might be a problem thoug...
by tobias
Sat Feb 16, 2013 12:09 pm
Forum: Developer Discussions
Topic: Larger battery? 340mHa (plus 1 gram camera)
Replies: 9
Views: 5507

Re: Larger battery? 340mHa (plus 1 gram camera)

That battery would work much better but the dimensions are not optimal: 5.7x18.6x41.5. The "inner" shape of the Crazyflie is 30mm and it would be good if the battery stayed inside this dimension. Also a more square battery would give better flight dynamics as the inertia would be more even.
by tobias
Sat Feb 16, 2013 11:59 am
Forum: Quadcopters
Topic: Motors facing up or down??
Replies: 9
Views: 9796

Re: Motors facing up or down??

That would be really interesting to test and shouldn't be that hard. Just turn the motors upside down and make sure the props spin in the right direction. I think they need to be revered. A firmware change could also fix that. Making some landing gear would be good as well. I'm a bit skeptical that ...
by tobias
Fri Feb 15, 2013 9:28 pm
Forum: Developer Discussions
Topic: Decoding SPEKTRUM TX signal
Replies: 4
Views: 2911

Re: Decoding SPEKTRUM TX signal

We have some experimental code that can make the Crazyradio work as a transmmitter module but it needs more work. Also attching it to the transmitter would be a bit hackish. Hopefully someone could design a case that could be 3D printed to make it look neat.
by tobias
Fri Feb 15, 2013 9:15 pm
Forum: Developer Discussions
Topic: crazyflie-firmware
Replies: 9
Views: 6545

Re: crazyflie-firmware

The MPU6050 can put the i2c aux in passthrough so that it looks like they are on the same bus.
by tobias
Wed Feb 13, 2013 8:22 pm
Forum: Developer Discussions
Topic: crazyflie-firmware
Replies: 9
Views: 6545

Re: crazyflie-firmware

We have quickly been experimenting with a MARG filter but it requires the magnetometer to be calibrated since it is very offset by the motor magnet fields. Other then that it should be pretty straight forward as the Madgwick's and Mayhony's algorithms exist in MARG versions as well. However making a...