Search found 30 matches

by thasu
Tue Jan 15, 2019 8:31 am
Forum: General discussions
Topic: Gyro fails when starting
Replies: 0
Views: 524

Gyro fails when starting

I get the following error when connecting to the cfclient. Also this leads CF to crash everytime I try to fly. MPU6500: Self test gyro X [FAIL]. low: -14.0, high: 14.0, measured: 25.69 MPU6500: Self test gyro X [FAIL]. low: -14.0, high: 14.0, measured: -31.62 MPU6500: Self test gyro X [FAIL]. low: -...
by thasu
Mon Jan 14, 2019 9:05 am
Forum: Developer Discussions
Topic: Limit the moving velocity in world coordinate following
Replies: 1
Views: 255

Limit the moving velocity in world coordinate following

I'm trying to move the CF to certain positions in a constant velocity using the send_position_setpoint command. But I noticed that at the start CF accelerates to a higher speed and trying to reach the destination as soon as possible. Is there a way to set a maximum velocity limit so that I can maint...
by thasu
Tue Nov 27, 2018 6:17 pm
Forum: General discussions
Topic: Tuning PID after adding new decks
Replies: 7
Views: 848

Re: Tuning PID after adding new decks

The problem is that the error accumulates with the distance when there is no pose correction. Currently I'm working on several methods for pose correction. The hardest part is to correct the pose using a limited number of ToF sensors. I will update the thread about the progress. Apart from that have...
by thasu
Sun Nov 25, 2018 4:08 pm
Forum: General discussions
Topic: Tuning PID after adding new decks
Replies: 7
Views: 848

Re: Tuning PID after adding new decks

There is no proper method to identify the out of range readings in VL53L1X. When an obstacle is not within the range, sensor gives random values. That's the reason to mark the cells as occupied at unnecessary places. Are you plotting the points with respect to the height to make a 3D plot? The bigge...
by thasu
Wed Nov 14, 2018 12:30 pm
Forum: General discussions
Topic: Tuning PID after adding new decks
Replies: 7
Views: 848

Re: Tuning PID after adding new decks

This is what I have achieved so far.

https://www.youtube.com/watch?v=2xft3J2ja0o&t=35s
by thasu
Tue Oct 30, 2018 8:14 am
Forum: General discussions
Topic: Tuning PID after adding new decks
Replies: 7
Views: 848

Tuning PID after adding new decks

https://forum.bitcraze.io/download/file.php?id=1059&mode=view I have made following upgrades in CF2. 1) A custom built deck is mounted at the top. 2) 500mAh battery is added. Weight - 12g, length - 45mm Apart from these a flow deck is attached and the overall flying weight is 42g. Now the CF seems ...
by thasu
Thu Oct 11, 2018 12:52 pm
Forum: Developer Discussions
Topic: Variance of Kalman Filter
Replies: 1
Views: 450

Variance of Kalman Filter

Hi, I tried logging the variance of Position x and y (varX and varY) using the python client. I'm trying to sample particles for a particle filter using these variances. But varX and varY stuck at 100 all the time. It doesn't converge to a lower value. Currently I'm using only the flow deck. Is any ...
by thasu
Thu Oct 11, 2018 6:16 am
Forum: Quadcopters
Topic: How to get the quadcopter avoid obstacle with a sensor?
Replies: 6
Views: 2711

Re: How to get the quadcopter avoid obstacle with a sensor?

This is the deck I made using 13 ToF sensors.
FormatFactoryIMG_20181011_114405.jpg
by thasu
Mon Oct 08, 2018 1:01 pm
Forum: General discussions
Topic: Problem in logging z ranger data
Replies: 5
Views: 765

Re: Problem in logging z ranger data

I'm using my own python script. For now let's say I want to use the basiclogSync file to log the zranger data.
Currently I'm using latest firmware and it has the same problem.
by thasu
Tue Sep 18, 2018 8:20 pm
Forum: Developer Discussions
Topic: Controlling Crazyflie when communication is lost
Replies: 3
Views: 489

Re: Controlling Crazyflie when communication is lost

Let's say the CF needs to fly in figure 8s until the link is reestablished.