Search found 2308 matches

by arnaud
Mon Jan 20, 2020 8:58 am
Forum: Developer Discussions
Topic: [SOLVED] GUI doesn't display absolutely on ubuntu
Replies: 5
Views: 3026

Re: GUI doesn't display absolutely on ubuntu

You GUI looks correct to me, what function are you missing?

If you are talking about the missing tabs, you can enable them with the menu "view->tabs".
by arnaud
Mon Jan 20, 2020 8:57 am
Forum: Developer Discussions
Topic: stm32 chip of our drone
Replies: 1
Views: 2338

Re: stm32 chip of our drone

Hi,
I do not understand your question, could you maybe add a bit of context?
by arnaud
Wed Jan 15, 2020 9:09 am
Forum: Developer Discussions
Topic: Timer configuration (Interrupt service routine)
Replies: 2
Views: 2353

Re: Timer configuration (Interrupt service routine)

Do you actually need a hardware timer? If not, you can run something at 1 KHz in two ways using the RTOS: 1. Setup a FreeRTOS timer at 1KHz. Timers are running at quite low priority and you are not allowed to keep your function running for long (same as with an interrupt ...), so you might get some ...
by arnaud
Tue Jan 14, 2020 9:17 am
Forum: Bitcraze
Topic: Radio Not Connecting
Replies: 5
Views: 2623

Re: Radio Not Connecting

Hi! It seems that there is two problems: the connection instability and the dongle not recognized anymore. The first thing to check is that you are running the right firmware. You sais that the dongle briefly flashes RED when connected. Are you sure that it is only red or is it both red and green? I...
by arnaud
Tue Jan 14, 2020 8:26 am
Forum: Loco Positioning System
Topic: LPS with ROS
Replies: 4
Views: 2303

Re: LPS with ROS

Hi, you do not need LPS support in ROS since with LPS you get the position in the Crazyflie: as soon as LPS is setup, you can send position setpoint and get position estimate from the Crazyflie without needing special support on the client side. This is in contrast to motion capture systems that do ...
by arnaud
Mon Jan 13, 2020 2:12 pm
Forum: Developer Discussions
Topic: [SOLVED] Control of two Crazyflies
Replies: 9
Views: 4035

Re: Control of two Crazyflies

It sounds like the possibility 1 is the best for your then. The only change to make to be able to launch 2 cfzmq client is to change the ports used by the ZMQ sockets . I pushed a change to cfzmq that adds a parameter to change the base-port: https://github.com/bitcraze/crazyflie-clients-python/issu...
by arnaud
Mon Jan 13, 2020 1:00 pm
Forum: Autonomous flight
Topic: Frequent fly aways, toiletbowling and flips with Lighthouse positioning
Replies: 14
Views: 5473

Re: Frequent fly aways, toiletbowling and flips with Lighthouse positioning

You might be hitting #531. We are investigating the problem right now. If you use a commit before the static memory change (for example 6ba33b7ce9), you should not see the problem.
by arnaud
Mon Jan 13, 2020 12:27 pm
Forum: Developer Discussions
Topic: Comunication between drone board chip to arm kit
Replies: 1
Views: 1983

Re: Comunication between drone board chip to arm kit

Hi,
The protocol used to debug and flash the STM32F4 is called SWD.
by arnaud
Fri Jan 10, 2020 10:35 am
Forum: Bitcraze
Topic: Multiple radio with one Crazyflie (Radio Redundancy)
Replies: 2
Views: 1947

Re: Multiple radio with one Crazyflie (Radio Redundancy)

There has been no work done in that field as far as I know. There is a fundamental design decision in CRTP you must be aware of: CRTP has been designed to have one and only one client connected to the Crazyflie at any time. Some ports, like the low level commander/setpoints, are stateless and will n...
by arnaud
Wed Jan 08, 2020 8:48 am
Forum: Bitcraze
Topic: ROS offboard positioning with LPS
Replies: 3
Views: 2092

Re: ROS offboard positioning with LPS

It still looks like project setup problem to me, though one more important feedback is: do not use the ros_lps package. You should use Crazyflie_ros directly or Crazyswarm since they implement everything required to control Crazyflies tracked with LPS. I updated the ros_lps project readme with some ...