Search found 8 matches

by PhilipH
Wed Jun 27, 2018 6:37 am
Forum: Bitcraze
Topic: Combining Flow deck and Qi charging deck
Replies: 0
Views: 4279

Combining Flow deck and Qi charging deck

Hi all, Is it possible to combine the flow deck and the Qi charging deck? One idea I had is to stack the charging deck at the bottom of the flow deck, and drill some holes at the charging deck for flow deck sensors. Or maybe attach the Qi charing deck to the side and wire it to the usb port? Philip
by PhilipH
Wed Aug 09, 2017 2:06 am
Forum: Developer Discussions
Topic: Crazyflie restarts in air using experimental firmware
Replies: 11
Views: 6004

Re: Crazyflie restarts in air using experimental firmware

Sorry about replying a bit late, 1) Before, the Crazyflie would restart and print ("no assert information found"). I have increased the stack size of all the tasks by 2, and it still restarts and crashes into the ground, which means a stack overflow is unlikely. 2) However, I start to see ...
by PhilipH
Mon Jul 31, 2017 10:58 pm
Forum: Developer Discussions
Topic: Crazyflie restarts in air using experimental firmware
Replies: 11
Views: 6004

Re: Crazyflie restarts in air using experimental firmware

Thanks Arnaud and James! I increased the stack size of CRTP_RX_TASK_STACKSIZE to (3 * configMINIMAL_STACK_SIZE) and STABILIZER_TASK_STACKSIZE to (5 * configMINIMAL_STACK_SIZE). The good news is that the times where the process got stuck somewhere(and thus watchdog time out and restart...) occurs muc...
by PhilipH
Sat Jul 15, 2017 2:23 am
Forum: Developer Discussions
Topic: Crazyflie restarts in air using experimental firmware
Replies: 11
Views: 6004

Crazyflie restarts in air using experimental firmware

Hi, I have been trying to integrating Mike Hammer's nonlinear quaternion controller into the firmware for more aggressive control. I have looked into both ICRA demo source code and Mike Hammer's code on https://github.com/mikehamer/crazyflie-firmware/tree/nonlinear-controller, and modified parts of ...
by PhilipH
Wed Jul 12, 2017 2:09 am
Forum: Bitcraze
Topic: Communication issue with Crazyflie
Replies: 10
Views: 6410

Re: Communication issue with Crazyflie

Hi, Thank you very much for your help! We solved this issue by just resetting kalman filter in ROS, and we even got some good results flying two crazyflies at the same time with one dongle! We are also planning to adapt some techniques crazyswarm for controlling multiple drones. I will keep you upda...
by PhilipH
Sat Jul 01, 2017 5:08 am
Forum: Bitcraze
Topic: Communication issue with Crazyflie
Replies: 10
Views: 6410

Re: Communication issue with Crazyflie

Hi, Thank you very much for your explanations and advice. We have set ESTIMATOR=kalman in the config.mk file, and we send external positions without using any lps deck or nodes. Does that mean kalman filter will not be enabled? We also looked into the log_kfpos topic, and x,y,z did become NaN. We kn...
by PhilipH
Thu Jun 29, 2017 12:21 am
Forum: Bitcraze
Topic: Communication issue with Crazyflie
Replies: 10
Views: 6410

Re: Communication issue with Crazyflie

Hi arnaud, Thank you for your reply. In fact, our team did some tests today, and here are the results. We were sending both waypoint commands and external positions at 70Hz, which we believe would not reach the 1000 packet/sec limit. We were able to consistently fly 1~2 crazyflies with 1 crazyradio ...
by PhilipH
Tue Jun 27, 2017 9:43 pm
Forum: Bitcraze
Topic: Communication issue with Crazyflie
Replies: 10
Views: 6410

Communication issue with Crazyflie

Hello, Our team has been working with flying Crazyflies using the crazyflie_ros package from whoenig. We use Vicon in our lab to get the position data of crazyflies and send them onboard using the external_position topic provided in the ros package. We are also using posSet mode and sending waypoint...