About Me:

Student at TTY. Experimenting with arducopter

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Everything about UAV:s is interesting

Activity Feed

Joonas replied to Boke's discussion Need help for serial comunication
"You can do both, it is possible to read the bytes you want straight from the port, but this might be a bit complicated since there is some mavlink stuff going on usually so you would need to know what kind of messages you want to pick from the…"
Nov 30, 2012
Joonas posted a discussion
Has anyone managed to get proper motor redundancy on hexa with PID tuning?According to my tests, it seems that attitude control loop is just not strong enough(not enough authority) to correct for the missing motor. I have tested this by removing the…
Aug 17, 2012
Joonas replied to Michele's discussion fusion all sensor IMU + GPS + Barometer
"Yes, it is possible, and it would be really beneficial. I have made some tests for some simple position fusion with IMU and it makes the position much better and theoretically even faster. But the thing is that full blown Kalman filter wont be able…"
Jul 10, 2012
Joonas posted a discussion
Hello all!I did some litle tinkering with the code to change the motor commands to actually represent the produced thrust, so that if you give esc pwm command of 50%, it would actually correspond to 50% thrust and so on.Graph might make it clearer.…
Jan 27, 2012
Joonas replied to Ruben Wijnhoven's discussion sonar stops working after 20m
"We seem to have some issues with sonar (lv-ez4) not working properly in cold enviroment (below 10C). Once I took our quad outside, sonar would just report 0 or 20cm, and would start working again after few minutes once it was brought inside.
Oct 24, 2011
Joonas commented on Jason Short's blog post Arducopter 2.0.40 preview
"Not sure if this is some sort of user mistake or a bug in the code, but it would seem that in flight level calibration corrects atleast the pitch to wrong direction.
I was using the 2.0.40 version available on download section, did normal level on…"
Sep 8, 2011
Joonas replied to marcelo's discussion 2.0.39b loiter+simple+stabilize testing
"I had similiar issue with simple mode, at first it was working just ok, but after a while of flying (and testing loiter) it would be somewhat "oversensitive" so that even small stick movements would send to copter bolting on some direction (there…"
Aug 30, 2011
Joonas replied to Hans Miller's discussion Loiter issue...
"I think I have same sort of issue, though I managed to get alt hold to be fairly accurate with PID tuning, but loiter is just zooming random direction at large angle. What is suprising is that RTL seems to work fairly well (atleast while I tested it…"
Aug 3, 2011
Joonas posted a discussion
I was just wondering if someone has already tried some sort of inertia navigation on arducopter platform? I at least could not find all that many discussions regarding this matter so I would assume there is something essential that I am…
Jul 19, 2011
Joonas posted a discussion
Hello 2.0.35 seems to be working rather nicely, but we had rather odd flip today where the chopper would rapidly flip around to its right side while I was landing it on simple mode. The flip seemed as if the right side motor would have just shut…
Jul 15, 2011