Search found 2126 matches

by tobias
Mon May 17, 2021 9:31 am
Forum: Developer Discussions
Topic: UWB Usages
Replies: 1
Views: 24

Re: UWB Usages

Hi!

We recommend 8 anchors for best performance in TDoA mode. You can read a bit more about it here. You could try with 5 by placing them in the corners of a pyramid, might work ok.
by tobias
Mon May 17, 2021 9:20 am
Forum: Bitcraze
Topic: Shop Payment Paypal accepted?
Replies: 4
Views: 1063

Re: Shop Payment Paypal accepted?

As @Kimberly wrote, In the shop we only accept credit cards but with quotes we can do other payment methods such as bank transfers.
by tobias
Mon May 17, 2021 9:17 am
Forum: Bitcraze
Topic: crazyflie 2 won't take off properly commander.send_position_setpoint
Replies: 9
Views: 3351

Re: crazyflie 2 won't take off properly commander.send_position_setpoint

With LP do you mean Loco Positioning? For the Crazyflie to do position control some form of positioning is needed, at minimum the Flow deck is needed which does relative positioning.
by tobias
Mon May 17, 2021 9:12 am
Forum: Developer Discussions
Topic: How to turn the propeller without attitude information from the sensor?
Replies: 7
Views: 139

Re: How to turn the propeller without attitude information from the sensor?

Then check health.c. Easiest might be to rewrite the propeller test to do what you want.
by tobias
Wed May 12, 2021 8:33 am
Forum: Developer Discussions
Topic: How to turn the propeller without attitude information from the sensor?
Replies: 7
Views: 139

Re: How to turn the propeller without attitude information from the sensor?

It could be hard to mount the bigquad+cf2.1 perfectly level. A couple of degrees from zero will not cause any problems but it is possible to calibrate this away. In the firmware configuration dialog in the cfclient it is possible to enter Pitch and Roll trim values. Just enter the values the flight ...
by tobias
Tue May 11, 2021 8:03 am
Forum: Developer Discussions
Topic: Bias in accelerometer
Replies: 5
Views: 175

Re: Bias in accelerometer

The controller is out of my knowledge but I know something about the accelerometer though. We do not do any calibration of it other then what is done in the factory and we assume it is sitting pretty flat, which I'm pretty sure is the case. The Alignment error in the data sheet says typical: 0.5 deg...
by tobias
Tue May 11, 2021 7:48 am
Forum: Developer Discussions
Topic: How to turn the propeller without attitude information from the sensor?
Replies: 7
Views: 139

Re: How to turn the propeller without attitude information from the sensor?

If you want them to start at the same time you can set the m1,m2... values first end then enable them.

If you want to see an example you can check the health.c that runs the propeller test.
by tobias
Mon May 03, 2021 7:00 am
Forum: General discussions
Topic: [Solved] Charging and Discharging unprotected batteries.
Replies: 6
Views: 668

Re: [Solved] Charging and Discharging unprotected batteries.

The 4.2v is controlled by the BQ24075 charger and looking in the datasheet the charging voltage can't be changed.
by tobias
Fri Apr 30, 2021 11:44 am
Forum: Developer Discussions
Topic: Filtering on Gyroscope
Replies: 2
Views: 115

Re: Filtering on Gyroscope

There are two level of filters. One in the gyro, BMI088, itself and one 2-pole lpf running in the sensor loop.

For the BMI088 filtering I think the datasheet is the best place to find delay parameters.
by tobias
Fri Apr 30, 2021 8:04 am
Forum: Developer Discussions
Topic: BigQuad used but the drone is very unstable
Replies: 8
Views: 751

Re: BigQuad used but the drone is very unstable

Yes the START_DISARMED probably needs some explanation. It is a safety mechanism and you can decide if you like to use it or not. To arm the motors the parameter system.forceArm needs to be set to 1. This will arm the motors.