Search found 8 matches
- Fri Jul 30, 2021 9:59 am
- Forum: Loco Positioning System
- Topic: How can i get the position of the tag ?
- Replies: 2
- Views: 10595
Re: How can i get the position of the tag ?
Hi You can find position of crazyflie from example code https://github.com/bitcraze/crazyflie-lib-python/blob/fbc491c811127785d3318e0ec45e264c055c1ca3/examples/autonomousSequence.py line 110 is the function that saves position of crazyflie to variable x, y, and z. position of crazyflie is coming fro...
- Fri Jan 22, 2021 9:34 am
- Forum: Loco Positioning System
- Topic: [SOLVED]TDOA2 positioning error in high altitude
- Replies: 3
- Views: 10793
Re: TDOA2 positioning error in high altitude
Hi kristoffer Thanks for the reply Yes i am using flow deck v2. I also checked the ranging std of flow deck and as you can see below flow deck has really good performance. flow deck std.png This is the picture of how i settled anchors configuration of anchor.png below anchors has height of 0.7m~1.19...
- Fri Jan 22, 2021 7:30 am
- Forum: Loco Positioning System
- Topic: [SOLVED]TDOA2 positioning error in high altitude
- Replies: 3
- Views: 10793
[SOLVED]TDOA2 positioning error in high altitude
Hi i have problem with drone being unstable in high altitude(1.5m and 2m). In video i send certain coordinate point using send_position_setpoint command to make it hover. (https://youtu.be/3zIm3GidDUo) I installed LPS using 8 anchors with 8m x 8m space, and anchor height being 0.7m and 2m. I guessed...
- Thu Jan 07, 2021 5:27 am
- Forum: Loco Positioning System
- Topic: LPS Node as Tag and Anchor
- Replies: 12
- Views: 6807
Re: LPS Node as Tag and Anchor
hi i'm trying to do 4 flying drones localize their position with TDOA2, then switches to anchor and ranges 1 drone on ground using TWR, and repeat these steps. TWR algorithm is inter-drone ranging code and i used this source https://github.com/bitcraze/crazyflie-firmware/pull/580 . i made mode switc...
- Mon Dec 28, 2020 1:14 pm
- Forum: Loco Positioning System
- Topic: ranging between crazyflies
- Replies: 3
- Views: 1803
Re: ranging between crazyflies
Hi, Mathilda Thanks for sharing the code. I have read your reply the day you posted but I was already using inter-drone twr ranging code of this: https://github.com/bitcraze/crazyflie-firmware/pull/580 What i'm trying to do is opposite as yours, making drone working as tag and anchor. Also, using TD...
- Sat Dec 12, 2020 4:33 am
- Forum: Bitcraze
- Topic: AntenaDelay
- Replies: 11
- Views: 6605
Re: AntenaDelay
Hi
thanks for the reply
I changed ANTENNNA_OFFSET to 155.5 and it worked
ranging error dropped to 10cm below
For people who wants to change ANTENNA_OFFSET,
increase ANTENNA_OFFSET to decrease ranging distance, and
decrease ANTENNA_OFFSET to increase ranging distance
thanks for the reply
I changed ANTENNNA_OFFSET to 155.5 and it worked
ranging error dropped to 10cm below
For people who wants to change ANTENNA_OFFSET,
increase ANTENNA_OFFSET to decrease ranging distance, and
decrease ANTENNA_OFFSET to increase ranging distance
- Tue Dec 08, 2020 9:16 am
- Forum: Bitcraze
- Topic: AntenaDelay
- Replies: 11
- Views: 6605
Re: AntenaDelay
Hi I just tested a TWR ranging accuracy between one node and one crazyflie. The ranging data was from LoPoTab0 - ranging.distance0. untitled.png The data showed ranging error of over 300mm. Is this also a problem of antenna delay? If it is, is there some kind of criterion which value should I fit in...
- Mon Nov 30, 2020 9:27 am
- Forum: Loco Positioning System
- Topic: ranging between crazyflies
- Replies: 3
- Views: 1803
ranging between crazyflies
hello i want crazyflie to range other crazyflie using TWR. I found TWR code in crazyfile-firmware https://github.com/bitcraze/crazyflie-firmware/blob/8c925aa7abd79ac05ef7d94b98bfacd4e37441fd/src/deck/drivers/src/lpsTwrTag.c but still i have no idea how to start It would be appreciated if somebody co...