Search found 59 matches

by poizone
Wed Feb 11, 2015 2:17 am
Forum: Developer Discussions
Topic: Magnetometer and Fused Sensor Output
Replies: 2
Views: 2339

Magnetometer and Fused Sensor Output

I'm looking through the stabilizer and sensor fusion code, and I came across a comment mentioning that magnetometer data isn't yet used. Is this completely true, or does that ignore using magnetometer data for gyro drift? I'm all about getting as much 3D data available from the flie to go into the s...
by poizone
Wed Feb 11, 2015 1:21 am
Forum: Developer Discussions
Topic: crazyflie control system
Replies: 11
Views: 8700

Re: crazyflie control system

That'd be correct for controlling on a per-axis basis, yes. You should be able to find a point where oscillations are minimized using that method. Be sure to understand how pitch and roll are being calculated and corrected in the x configuration versus the plus configuration too. X configurations re...
by poizone
Tue Feb 10, 2015 10:48 pm
Forum: Developer Discussions
Topic: crazyflie control system
Replies: 11
Views: 8700

Re: crazyflie control system

I found a paper http://enu.kz/repository/2010/AIAA-2010-3407.pdf which states that it is possible to use only one PID regulator on each axis. The input to that PID regulator is angle error. PID regulator output - PWM actuator. I made the similarity of their stand, but a week can not find suitable P...
by poizone
Tue Feb 10, 2015 6:36 am
Forum: Developer Discussions
Topic: crazyflie control system
Replies: 11
Views: 8700

Re: crazyflie control system

It's most definitely possible, and refactoring the PID system is actually something I've been looking into also for my quad. The hover mode is separated because some people want the option to enable and disable it, and it was added after the original stabilization PID was written. Your inputs would ...
by poizone
Mon Feb 09, 2015 8:39 am
Forum: Developer Discussions
Topic: crazyflie control system
Replies: 11
Views: 8700

Re: crazyflie control system

I've been reading through the firmware, and if I'm correct crazyflies have barometer based altitude hold available in the most current versions. The bulk of the code can be found in https://github.com/bitcraze/crazyflie-firmware/blob/crazyflie2/modules/src/stabilizer.c, defined under stabilizerAltHo...
by poizone
Fri Feb 06, 2015 6:28 pm
Forum: Developer Discussions
Topic: Making "Forward" the Green LED
Replies: 2
Views: 1765

Re: Making "Forward" the Green LED

Hmm, for some reason the client wasn't letting me select that option. I was wondering what that was for, and why it was greyed out. I'll see what the problem is with my build then. Thanks for the help!

EDIT: Well this is awkward, it was my GTK/XFCE theme combo.
by poizone
Fri Feb 06, 2015 1:30 am
Forum: Developer Discussions
Topic: Making "Forward" the Green LED
Replies: 2
Views: 1765

Making "Forward" the Green LED

I'm wondering if there's already a way to easily offset the forward heading from M1 to the green LED. I want to see what L-R split throttles feel like. The idea would be to have M1 + M4 , and M2 + M3 controlled on one +/- axis, and M1 + M2 , and M4 + M3 controlled on one +/- axis.
by poizone
Thu Feb 05, 2015 3:09 pm
Forum: Support
Topic: [Not Solveable][Hardware Issue][CF-1] M4 spins when off
Replies: 3
Views: 2568

Re: [CF-1] M4 spins when off

Was the part number changed between revisions, or is this the "next best thing" so to speak? The wiki mentions the PMV31XN which has slightly higher tolerances across the board based on the datasheets. EDIT: I checked the PMV30UN on DigiKey, and it's not just EoL, but marked obsolete. Does...
by poizone
Thu Feb 05, 2015 4:13 am
Forum: Support
Topic: [Not Solveable][Hardware Issue][CF-1] M4 spins when off
Replies: 3
Views: 2568

[Not Solveable][Hardware Issue][CF-1] M4 spins when off

I recieved a crazyflie nano as a christmas gift, and just took the time to solder it up today. It was flying perfectly fine for roughly two hours until the M4 motor started to spin even while the board was powered off. The motor does not spin when connected to USB without the battery, but will spin ...