hi.carlos:
Your experiment so cool! very good, so UWB trace anything no problem!
I want to know what range method TOF or TDOA?
Search found 186 matches
- Sun Aug 14, 2016 12:48 pm
- Forum: Developer Discussions
- Topic: Trajectory Tracking Open Source project
- Replies: 5
- Views: 4382
- Fri Aug 12, 2016 4:59 am
- Forum: Developer Discussions
- Topic: dwm1000 add more tag?
- Replies: 14
- Views: 10475
Re: dwm1000 add more tag?
hi,arnaud: I have already calculate the time difference with two anchors, test about 1 hour, the data as following: tdoa.png these values are dw1000 timestamp, so we need covert to time: X/(499.2*128*1000) = x ns so these values range from -2200 to -3500, so the time difference is about -34ns to -54...
- Thu Aug 04, 2016 1:18 pm
- Forum: Developer Discussions
- Topic: dwm1000 range only 10m stable
- Replies: 3
- Views: 2314
dwm1000 range only 10m stable
hi,all
now the dwm1000 range only 10m, refence lps node code, maybe reason?
now the dwm1000 range only 10m, refence lps node code, maybe reason?
- Thu Jul 07, 2016 6:45 am
- Forum: Developer Discussions
- Topic: dwm1000 spi speed issue
- Replies: 6
- Views: 5114
Re: dwm1000 spi speed issue
Hi,Arnaud: about measure time, Got it! I don't sync tags, instead lock anchor, two points: 1, when one tag and anchor ranging, lock the anchor, block range with other tag. when ranging complete, unlock the anchor. 2, from the anchors rxcallback function see, I feel any poll will enter the function, ...
- Wed Jul 06, 2016 9:39 am
- Forum: Developer Discussions
- Topic: dwm1000 spi speed issue
- Replies: 6
- Views: 5114
Re: dwm1000 spi speed issue
Hi, Arnaud: So cool, I will try it. Thank you for your effort! we can get more distances per seconds. I have added lock anchor code for support more tags rather than only one tag with 6 anchors. when the code stable, I will source the code for you. and add get distance frequence, more easily filter ...
- Tue Jul 05, 2016 6:06 am
- Forum: Developer Discussions
- Topic: test crazyflie-firmare dwm1000 fail
- Replies: 5
- Views: 3325
Re: test crazyflie-firmare dwm1000 fail
hi,
Thanks! the newest crazyflie-firmware is OK?
I will try the command: rosropic echo /ranging
Thanks! the newest crazyflie-firmware is OK?
I will try the command: rosropic echo /ranging
- Fri Jul 01, 2016 1:28 am
- Forum: Developer Discussions
- Topic: dwm1000 spi speed issue
- Replies: 6
- Views: 5114
Re: dwm1000 spi speed issue
hi,arnaud: Got it.Thanka! I have already measure the time of a successful distance between tag and anchor, about 4~5ms. I will try 12MHZ spi speed. test code and research the DMA transmit for spi for improving the time. Addition, I try the crazyflie-firmware dwm1000 code, force mount the dwm1000 dec...
- Thu Jun 30, 2016 3:58 am
- Forum: Developer Discussions
- Topic: dwm1000 spi speed issue
- Replies: 6
- Views: 5114
dwm1000 spi speed issue
hi, I check the lps-node-firmware code, find the spi speed is 3M clcok, according to the dw1000 spec, when the the speed may reach 20MHZ. 1 (1).png the dw1000 user manual record the following: In the IDLE state the DW1000 internal clock generator CLKPLL is locked running and ready for use but is gat...
- Sun Jun 26, 2016 3:31 pm
- Forum: Developer Discussions
- Topic: test crazyflie-firmare dwm1000 fail
- Replies: 5
- Views: 3325
test crazyflie-firmare dwm1000 fail
hi,all: I want to try crazyflie-firmare dwm1000 code, then I have forced the code compiled, add the follow config to tools/make/config.mk: CFLAGS += -DDECK_FORCE=bcDWM1000 DEBUG=1 from the crazyflie-client-python, I find the dwm1000 init successfully: dwm1001test1.png then I have already deploy the ...
- Wed Jun 01, 2016 3:28 pm
- Forum: Developer Discussions
- Topic: how to select the pid value?
- Replies: 1
- Views: 1815
how to select the pid value?
Hi, I have checked the Rll/Pitch/Yaw Attidute/Rate PID value, as follow: #define PID_ROLL_RATE_KP 250.0 #define PID_ROLL_RATE_KI 500.0 #define PID_ROLL_RATE_KD 2.5 #define PID_ROLL_RATE_INTEGRATION_LIMIT 33.3 #define PID_PITCH_RATE_KP 250.0 #define PID_PITCH_RATE_KI 500.0 #define PID_PITCH_RATE_KD 2...