Search found 2308 matches

by arnaud
Mon Sep 21, 2020 12:18 pm
Forum: Quadcopters
Topic: Can I stop the sensor when I use it for ten second in flow deck?
Replies: 15
Views: 255

Re: Can I stop the sensor when I use it for ten second in flow deck?

Hi, The flow deck does indeed contain the optical flow sensor and one ToF ranging sensor. The motion_commander does control the XYZ position of the drone, it has no notion of what sensor are installed on the drone. The drone estimates and control its position,velocity using some means (IMU plus the ...
by arnaud
Mon Sep 21, 2020 11:56 am
Forum: Lighthouse positioning system
Topic: lighthouse with 2018/2019 Christmas video
Replies: 2
Views: 159

Re: lighthouse with 2018/2019 Christmas video

Hi, The trajectories where made using the CrazyDance software by Ben. The drones where controlled by LaMouchFolle . The firmware used was 'stock'. As far as I can remember (and tell from the code), LaMoucheFolle is sending high-level position GoTo commands at high frequency (~60Hz), this was not the...
by arnaud
Mon Sep 21, 2020 11:33 am
Forum: Quadcopters
Topic: Can I stop the sensor when I use it for ten second in flow deck?
Replies: 15
Views: 255

Re: Can I stop the sensor when I use it for ten second in flow deck?

Hi, There is no functionality that allows to disable the ToF sensor in flight, but it can be added quite easily. The followind change in the firmware adds a parameter "tof.enable", if this parameter is set to 0, the ToF sensor is not going to be pushed anymore to the estimator: diff --git a/src/deck...
by arnaud
Mon Sep 21, 2020 10:59 am
Forum: AI-deck
Topic: [SOLVED] Battery drain when powered off
Replies: 2
Views: 111

Re: Battery drain when powered off

Hi, This is surprising since, when OFF, the Crazyflie will cut power to the deck. Have you confirmed that the battery drain is indeed greater when the deck is installed or not on the same Crazyflie? (to exclude possibility that this Crazyflie has a problem). We will be making measurement on our side...
by arnaud
Mon Sep 21, 2020 9:48 am
Forum: Lighthouse positioning system
Topic: LH Deck not booting properly
Replies: 6
Views: 329

Re: LH Deck not booting properly

Hi, The lighthouse 2 synchronization can be a bit sensitive at time, have you tried to move your Crazyflie closer and/or farther away from the base station to check if it helps. There is a check in the lighthouse code, so if one of the sensor starts not working, it will print Warning: not getting da...
by arnaud
Mon Sep 21, 2020 9:17 am
Forum: Support
Topic: Crazyflie VM build errors first time booting up.
Replies: 1
Views: 84

Re: Crazyflie VM build errors first time booting up.

Hi,

I was not able to reproduce this problem. Did you run the "Update all projects" script from the VM desktop?
by arnaud
Wed Sep 16, 2020 8:30 am
Forum: Loco Positioning System
Topic: positioning question
Replies: 13
Views: 721

Re: positioning question

For your first question, it seems that you are trying to run 2 scripts at the same time? If so, this is not possible, a script will take control of a Crazyradio and of the Crazyflie connection (there should be only one client connected to the Crazyflie at once). As for the logging, you need to add i...
by arnaud
Wed Sep 16, 2020 8:21 am
Forum: Developer Discussions
Topic: new Client-Tab for controlling the Crazyflie using LH
Replies: 3
Views: 179

Re: new Client-Tab for controlling the Crazyflie using LH

This is odd, you should be able to go down to 10ms. There might be a problem with the way you update the UI: I do not remember the details now, but UI and the crazyflie code runs in different threads. The UI update must pass though a signal, this way Qt will automatically put the update in a queue t...
by arnaud
Thu Sep 10, 2020 8:54 am
Forum: Developer Discussions
Topic: new Client-Tab for controlling the Crazyflie using LH
Replies: 3
Views: 179

Re: new Client-Tab for controlling the Crazyflie using LH

Hi, Sounds like a nice project. For your problems: 1. I think you should look at this ticket: https://github.com/bitcraze/crazyflie-clients-python/issues/334. To be able to control the Crazyflie from a tab you need to disable the gamepad control, I added a function to do that in the ticket. Once the...
by arnaud
Thu Sep 10, 2020 8:36 am
Forum: Support
Topic: Input Values for Command
Replies: 3
Views: 1406

Re: Input Values for Command

Hi, the 16bit number to RPM is fairly linear (since this is a DC motor and the bit number represents the voltage). However the thrust is not linear with the RPM. We have made an investigation about that a while ago: https://wiki.bitcraze.io/misc:investigations:thrust, in it we did devise some formul...