Search found 1915 matches

by tobias
Tue Sep 24, 2019 6:51 am
Forum: External positioning systems
Topic: Lighthouse&UWB deck
Replies: 9
Views: 777

Re: Lighthouse&UWB deck

Yes that is how you should do it, and you can always switch back later if needed.
by tobias
Mon Sep 23, 2019 12:36 pm
Forum: Autonomous flight
Topic: Crazyflie 2.1 - Autonomous Flight No Takeoff
Replies: 2
Views: 327

Re: Crazyflie 2.1 - Autonomous Flight No Takeoff

The Crazyflie by it self does not have enough sensors to be autonomous. At least the flow deck is needed to get a relative position. A MoCap system can give its position and then it will work.
by tobias
Mon Sep 23, 2019 12:31 pm
Forum: Support
Topic: Cannot fit three boards
Replies: 5
Views: 363

Re: Cannot fit three boards

If you mount the battery the other way around so the usb connector is not in the way?
by tobias
Mon Sep 23, 2019 12:26 pm
Forum: Support
Topic: Sometime restart while doin nothing, where should I start looking?
Replies: 1
Views: 194

Re: Sometime restart while doin nothing, where should I start looking?

Hard to say but the console seems to have problems with I2C connection. Could be a glitch in the connection between the z-ranger and crazyflie.

Flashing FW to many, one after the other, is possible with a script. Please check the cload* scripts here.
by tobias
Mon Sep 23, 2019 12:17 pm
Forum: Loco Positioning System
Topic: How can I send the location information calculated by Roadrunner to my robot
Replies: 8
Views: 561

Re: How can I send the location information calculated by Roadrunner to my robot

The Tx, Rx on the green connector are connected to the uart2 on the expansion port, thus you can use the uart2 functions to transfer the data you need. The data I think is easiest to get via the log framework, similar to what is done e.g. here . You could also have a look at this roadrunner->mavlink...
by tobias
Thu Sep 19, 2019 8:22 am
Forum: Developer Discussions
Topic: Reading Flash Contents of Crazyflie Serially
Replies: 2
Views: 230

Re: Reading Flash Contents of Crazyflie Serially

Hi and welcome! There are many ways to do it, could you maybe explain a bit more how you would like to do it? E.g. the expansion port I2C pins SDA, SCL are multiplexed with the USART1 which contains the STM324F05 ROM serial bootloader. Otherwise you could "spit out" the data on on of the expansion p...
by tobias
Mon Sep 16, 2019 12:26 pm
Forum: Support
Topic: BigQuad deck and target tracking with an on-board camera
Replies: 2
Views: 264

Re: BigQuad deck and target tracking with an on-board camera

I can't think of a way to do this without modifying the firmware. It requires updating some files but not impossible to do. First of you should run the kalman filter. Then into this you can inject height measurement. See the zranger as an example . To get the values from the PC to the crazyflie use ...
by tobias
Mon Sep 16, 2019 11:47 am
Forum: Quadcopters
Topic: tdoa data of Crazyflie
Replies: 9
Views: 2521

Re: tdoa data of Crazyflie

I believe the LPS is not accurate enough to archive what you want. You need a more high precision system such as the lighthouse or a MoCap system.
by tobias
Mon Sep 16, 2019 11:43 am
Forum: Autonomous flight
Topic: Autonomous flight wiith Flow Deck V2 only
Replies: 2
Views: 282

Re: Autonomous flight wiith Flow Deck V2 only

Do you maybe have an old firmware. At some point the initial position was not zero and I cant remember why but that was changed. The initial position is set here. Are you sending a reset of the kalman filter at some point? If not, it is probably a good idea.
by tobias
Mon Sep 16, 2019 9:56 am
Forum: General discussions
Topic: Controlling motor
Replies: 1
Views: 544

Re: Controlling motor

Do I understand you correctly that you would like to control the brushed motors both CW and CCW? Please explain what you mean by "crazyflie to round opposite"