Search found 9 matches

by Baoasi
Tue May 18, 2021 9:57 am
Forum: Developer Discussions
Topic: Latency measurement between PC and Crazyflie
Replies: 6
Views: 1878

Re: Latency measurement between PC and Crazyflie

thank you for your feedback!
I use Virtualbox, perhaps as you said, virtual machine cause more latency. I will try it with a new local machine and give a feedback after that.

Regards
Baosai
by Baoasi
Mon May 17, 2021 10:07 pm
Forum: Developer Discussions
Topic: Latency measurement between PC and Crazyflie
Replies: 6
Views: 1878

Re: Latency measurement between PC and Crazyflie

Thanks a lot for your help. After testing, my latency is very high, I don't know which factors lead to the high latency. I use the virtual system, maybe it is the reason. Do you know what other reasons can als cause a high latency? Here are my results: 15:3 () Latency for radio://0/80/2M/E7E7E7E7E7 ...
by Baoasi
Mon May 17, 2021 5:33 pm
Forum: Developer Discussions
Topic: Always a sudden disturbance in the same time
Replies: 3
Views: 6521

Re: Always a sudden disturbance in the same time

I think this problem has nothing to do with the controlling. Even if I do not send any commands, the copter has also a disturbance. (the firmware is unchanged, original from bitcraze). The disturbance comes sometimes large, sometimes small, but always in the same time.
by Baoasi
Fri Apr 30, 2021 6:46 pm
Forum: Developer Discussions
Topic: Always a sudden disturbance in the same time
Replies: 3
Views: 6521

Always a sudden disturbance in the same time

Hi all, My crazyflie always hasd an sudden interference in the same time . I tried to use flow deck2 and lighthouse positioning system to get real-time position, but unfortunately, this interference always appeared. So I think this problem has nothing to do with the positioning system. I also tried ...
by Baoasi
Sat Mar 20, 2021 3:10 pm
Forum: General discussions
Topic: question about log period_in_ms and commander.send_setpoint function
Replies: 5
Views: 1770

Re: question about log period_in_ms and commander.send_setpoint function

I am not sure what is happening exactly but I have a note about the logging subsystem: When you setup a log block, the period is set by step of 10ms, so what I guess is happening is that if you ask for 15ms you are actually getting 20ms period and when you go bellow that you are getting 10ms period...
by Baoasi
Thu Mar 11, 2021 7:02 am
Forum: General discussions
Topic: communicate between lighthouse and PC directly?
Replies: 1
Views: 864

communicate between lighthouse and PC directly?

Hallo,
ich want to send 10 log data back to PC(3 position,3 velocity and 4 Quaternion), but that is impossible due to the limit of packet. So I want to know, can lighthouse and PC communicate directly? if possible,then I can get the some data direct from lighthouse instead of from crazyradio.
Thanks!
by Baoasi
Thu Mar 11, 2021 6:55 am
Forum: General discussions
Topic: question about log period_in_ms and commander.send_setpoint function
Replies: 5
Views: 1770

question about log period_in_ms and commander.send_setpoint function

Hallo, i have made an off- board controll, which means the position controller in PC and send the control commanders(roll, pitch, yaw and thrust) into crazyflie throught crazyradio. I can accomplish the goal now, but there is still a problem. When I shorten the log sampling time, the flight becomes ...
by Baoasi
Thu Feb 11, 2021 3:24 pm
Forum: Developer Discussions
Topic: Latency measurement between PC and Crazyflie
Replies: 6
Views: 1878

Latency measurement between PC and Crazyflie

Hi, i want to send the control commanders from PC (roll,pitch,yaw and thrust) to Crazyflie, because of the long solution time of nmpc in PC. So is the latency measurement and compensation very necessary. I have seen that someone in forum have done this task, but still dont know how to make it. Can a...
by Baoasi
Thu Feb 11, 2021 2:35 pm
Forum: Developer Discussions
Topic: Send Thrust, yaw pitch roll command and only use attitude PID controller
Replies: 1
Views: 1037

Send Thrust, yaw pitch roll command and only use attitude PID controller

Hi! I am working with the crazyflie and want to use nmpc instead of Position controller and Velocity controller. Due to the lang computation times I intend to implement nmpc operations on the computer and then send the control commanders(roll, pitch, yaw and thrust) into crazyflie. With the help of ...