Search found 9 matches
- Sat Aug 18, 2018 2:29 pm
- Forum: Loco Positioning System
- Topic: Bad Positioning Effect in Some Area
- Replies: 4
- Views: 3011
Re: Bad Positioning Effect in Some Area
Hi arix, The node I use is a bit different from the one that can be bought from crazyflie shop. I use dwm1000 qfn chip on the PCB board so I can replace the antenna. The change of antenna can enhance the positioning effect but the drone should be able to hover using worse antenna. I think there shou...
- Wed Aug 15, 2018 11:28 am
- Forum: Loco Positioning System
- Topic: Bad Positioning Effect in Some Area
- Replies: 4
- Views: 3011
Re: Bad Positioning Effect in Some Area
After some test, I think I solved the problem. Mainly I have done two things. One is flashing the newest firmware to the drone, which gives better control of the drone. The other is replacing antennas of all the lps anchors by better ones. This makes the plane hover perfectly at every position in th...
- Tue Aug 07, 2018 5:02 am
- Forum: Loco Positioning System
- Topic: Bad Positioning Effect in Some Area
- Replies: 4
- Views: 3011
Bad Positioning Effect in Some Area
Hi crazyfliers, I establish lps system using 6 anchors in TWR mode. I let the drone fly through four points by autononousSequency.py. The sequence I tested is (1.0,1.0,1.0) -> (2.5, 1.0, 1.0) -> (2.5, 2.5, 1.0) -> (1.0, 2.5, 1.0) in unit meters. The locating performance of the drone is excellent at ...
- Sat Aug 04, 2018 3:48 pm
- Forum: Bitcraze
- Topic: Cannot Communicate with Crazyradio after Flashing NRF51822
- Replies: 5
- Views: 3177
Re: Cannot Communicate with Crazyradio after Flashing NRF51822
Here is a screenshot showing the last step of make factory_reset.
- Sat Aug 04, 2018 3:46 pm
- Forum: Bitcraze
- Topic: Cannot Communicate with Crazyradio after Flashing NRF51822
- Replies: 5
- Views: 3177
Re: Cannot Communicate with Crazyradio after Flashing NRF51822
Hi arnaud, The reason why all the MCUs are brand new is that I remade the PCB board according to the crazyflie schematic documents to add extra functions and change the shape of the drone. In my trials before, LED M3 never blinks so I need to flash the crazyflie2-stm-bootloader firmware as you said....
- Tue Jul 31, 2018 4:28 pm
- Forum: Bitcraze
- Topic: Cannot Communicate with Crazyradio after Flashing NRF51822
- Replies: 5
- Views: 3177
Re: Cannot Communicate with Crazyradio after Flashing NRF51822
The pictures shows the error information when using make cload command.
- Tue Jul 31, 2018 4:27 pm
- Forum: Bitcraze
- Topic: Cannot Communicate with Crazyradio after Flashing NRF51822
- Replies: 5
- Views: 3177
Cannot Communicate with Crazyradio after Flashing NRF51822
Hi, I flashed the firmware to a brand new NRF51822 by the command 'make factory_reset'. All of the MCUs in my drone are brand new, meaning no programs or no correct programs have been flashed to them before. The method of flashing is soldering STlink cable to four NRF debug pins on the drone and fla...
- Thu Jun 07, 2018 5:56 pm
- Forum: Loco Positioning System
- Topic: The drone drifts when flying using position hold mode
- Replies: 3
- Views: 2420
Re: The drone drifts when flying using position hold mode
Thanks for your reply, tobias. We will try to use python script or ROS to control the position of the plane later. However the screenshot of the client above shows the target pitch and roll are exactly zero. Doesn't that mean the inputs are zero?
- Wed Jun 06, 2018 3:48 pm
- Forum: Loco Positioning System
- Topic: The drone drifts when flying using position hold mode
- Replies: 3
- Views: 2420
The drone drifts when flying using position hold mode
Hello, We are trying to fly the drone using UWB loco positioning system, but the effect is far from expectation. We use a joystick to control the drone by cfclient. The firmware downloaded to the drone is in VM2018.01 with forced DWM1000deck support and TWR ranging support. The location of the drone...