Search found 2275 matches

by arnaud
Fri Dec 27, 2019 2:20 pm
Forum: Loco Positioning System
Topic: Positioning
Replies: 1
Views: 1796

Re: Positioning

Using lighthouse positioning, the Crazyflie is able to measure and correct its orientation, this is what the video is demonstrating. Using LPS, it is not possible to measure the YAW and so the Crazyflie must start with a already known YAW in order for it to fly properly. You need to start your Crazy...
by arnaud
Fri Dec 27, 2019 2:16 pm
Forum: Bitcraze
Topic: virtualbox iso issue
Replies: 6
Views: 2104

Re: virtualbox iso issue

I think you are hitting this issue: https://github.com/bitcraze/bitcraze-vm/issues/45. You need VirtualBox 5 to run this script. As I noted in your other post, you do not need this script to run the VM, it is used for development. You can download the pre-build VM from the release page: https://gith...
by arnaud
Fri Dec 27, 2019 2:12 pm
Forum: Bitcraze
Topic: usb 2 error setting up VM
Replies: 3
Views: 1320

Re: usb 2 error setting up VM

Good that you managed to fix the problem! One note: this script is used to author the VM, not to use it. It is used when making a new version of the VM. If you only want to use the VM you can download it from the release page: https://github.com/bitcraze/bitcraze-vm/releases/. The script you are run...
by arnaud
Fri Dec 27, 2019 11:45 am
Forum: Support
Topic: Crazyflie 1.0 On/Off Button cant get in Bootloader Mode
Replies: 1
Views: 2211

Re: Crazyflie 1.0 On/Off Button cant get in Bootloader Mode

Crazyflie 1.0 did check for the bootloader at startup, you need to restart the Crazyflie while the client is searching for a bootloader. This is done just by clicking the button to switch off and then switch on the Crazyflie. If the button does not work you can also disconnect and reconnect the batt...
by arnaud
Fri Dec 27, 2019 11:37 am
Forum: Bitcraze
Topic: Multiranger deck
Replies: 5
Views: 2201

Re: Multiranger deck

You can also find the schematic and datasheets on the wiki: https://wiki.bitcraze.io/projects:crazyflie2:expansionboards:multiranger. 3V3 of the raspberry pi should work well and you need to feed 5V to VCOM. Though, you definitely cannot use the deck with a 5V system like an Arduino UNO. The deck ha...
by arnaud
Fri Dec 27, 2019 11:14 am
Forum: Developer discussions
Topic: Velocity
Replies: 1
Views: 2222

Re: Velocity

To change the speed of yaw you need to increase the duration of your goto, for example duration = 4.0 will yaw (and move) twice as slow.

Note that both the way and the linear movement will be slowed down.
by arnaud
Fri Dec 27, 2019 11:09 am
Forum: Autonomous flight
Topic: Frequent fly aways, toiletbowling and flips with Lighthouse positioning
Replies: 14
Views: 4465

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

I did not understand that you sent lighthouse geometry via the radio. If you do so in your script #517 indeed breaks this functionality and is the issue. In that case hardcoding the lighthouse geometry in the Crazyflies is the quickest workaround for now.
by arnaud
Wed Dec 18, 2019 8:41 am
Forum: Developer Discussions
Topic: finding out how much memory is available
Replies: 2
Views: 924

Re: finding out how much memory is available

You might be running our of heap, currently the task stacks are allocated on heap (this is something we really want to change in the future, FreeRTOS now has a static API). It is more than OK to increase the stack, memory outside of static allocation and stack is unused/wasted in the Crazyflie. You ...
by arnaud
Tue Dec 17, 2019 2:49 pm
Forum: Developer Discussions
Topic: yawing in specific height
Replies: 13
Views: 3493

Re: yawing in specific height

I have no idea how slam work, so I do not know what could go wrong there. On the other hand, I see no reason why the control or estimation would suddenly stop working so this is why my advice is: lets test and actually find out where the problem is. Since you have a flow deck and the full chain has ...
by arnaud
Tue Dec 17, 2019 2:12 pm
Forum: Developer Discussions
Topic: yawing in specific height
Replies: 13
Views: 3493

Re: yawing in specific height

My suggestion is to test with a known-working positioning system understand where the problem is. I have tested very similar code (I was using absolute goto) without any problem using the flow as positioning sensor. Since the high-level commander and controller have been proven to work in many posit...