Search found 2465 matches

by arnaud
Mon Mar 15, 2021 2:22 pm
Forum: Support
Topic: install cflib
Replies: 3
Views: 323

Re: install cflib

Hi, Can you please give us a bit more information about what you are trying to achieve and how. Most important information are: - What OS are you running - What do you want to do - What steps have you followed so far - At what step are you blocked, what was the command and what is the error message ...
by arnaud
Mon Mar 15, 2021 2:18 pm
Forum: General discussions
Topic: Access to tick from another source file.
Replies: 4
Views: 383

Re: Access to tick from another source file.

When transfering a single word of data from one thread to another you could just declare it as extern, without needing to use a pointer, log or anything else: // In stablizer.c: uint32_t my_tick; // in another file extern uint32_t my_tick; // From here, accessing my_tick does access the my_tick vari...
by arnaud
Mon Mar 15, 2021 1:55 pm
Forum: Quadcopters
Topic: TOC problem[SOLVED]
Replies: 2
Views: 511

Re: TOC problem

Hi, Unfortunately the only document for the log variables so far is the Crazyflie source code. We have been talking about adding comments to the logs and param (including units and enum name for the variables that are enums), but this is still in the (long) todo list... One thing that may help you i...
by arnaud
Mon Mar 15, 2021 1:46 pm
Forum: Lighthouse positioning system
Topic: Some questions while using Lighthouse distance measuring
Replies: 1
Views: 305

Re: Some questions while using Lighthouse distance measuring

I am a bit curious of how you achieve distance measurement to an obstacle with UWB (ie the LPS deck)? Are you maybe using the multiranger deck instead? In either case, the way to go is to make an out-of-tree app, you can make an app for the Crazyflie and pull the Crazyflie firmware as a subrepos. An...
by arnaud
Mon Mar 15, 2021 1:31 pm
Forum: Loco Positioning System
Topic: [SOLVED] Crazy Bolt with Loco Tag always lost packet(connection) after connecting for a few seconds
Replies: 3
Views: 327

Re: Crazy Bolt with Loco Tag always lost packet(connection) after connecting for a few seconds

Have you attached an antenna to the bolt? The bolt does not have an integrated antenna so an antenna has to be attached to it to get a proper connection.

As for the positioning, by how much is the position moving when you rotate the Crazyflie?
by arnaud
Thu Mar 11, 2021 9:37 am
Forum: General discussions
Topic: question about log period_in_ms and commander.send_setpoint function
Replies: 5
Views: 437

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 arnaud
Thu Mar 11, 2021 9:15 am
Forum: General discussions
Topic: communicate between lighthouse and PC directly?
Replies: 1
Views: 175

Re: communicate between lighthouse and PC directly?

Can you tell us a bit more about your setup and goal since I do not understand the link between lighthouse and the logs. For lighthouse: there is no communication from the deck to the basestation, so you cannot get data from the lighthouse basestation. You can get data from the deck directly if you ...
by arnaud
Wed Mar 10, 2021 8:51 am
Forum: General discussions
Topic: Pair multiple Crazyflies using BLE?
Replies: 2
Views: 279

Re: Pair multiple Crazyflies using BLE?

Hi, The Crazyflie comes with a bluetooth LE stack that can only work as a device, not as a host. This means that out of the box you cannot make one Crazyflie connect another one over BLE. It is possible to change the stack but that might require major work to port the nRF firmware and bootloader to ...
by arnaud
Mon Mar 08, 2021 2:20 pm
Forum: Developer Discussions
Topic: Granular control of height
Replies: 2
Views: 280

Re: Granular control of height

This is a quite fundamental problem, we and others have tried multiple time to solve it with "an easy fix", but it is always harder than expected. None of these fixes can be done only on the control side unfortunately, all requires some modification on the Crazyflie side. The basic problem is that w...
by arnaud
Mon Mar 08, 2021 1:09 pm
Forum: General discussions
Topic: Flying Multiple Crazyfile
Replies: 1
Views: 232

Re: Flying Multiple Crazyfile

As wolfgang noted in his answer in your other thread (https://forum.bitcraze.io/viewtopic.php?p=21520#p21520), logs are sampled and timed in the Crazyflie clock and there is not synchronization between Crazyflie clocks implemented as from now. The way Crazyswarm handles that is by sending a broadcas...