Pixhawk connected but not getting parameters

semo · June 10, 2019, 7:22pm

Hi all ,

I have Pixhawk flight control when I connect it to my laptop by cable using MP

it connect well but after the connection the MP try to get the parameters from the device but it couldn’t get it

the dialog of getting param not able to read the param . and keep on screen

the Firmware is arduplane But I don’t know what is the release

I need to get the parameters coz It has the final param setting , I don’t want to lose it .

after connection it show in the HUD the moving of the device , no problem in the device

, maybe there is any setting that prevent the MP from reading the param ??

maybe the parameters set in another programs such as tablet ( Tower , or other software ) dose it effect ?

any help please
Regards.

ambattuhari · June 11, 2019, 12:11pm

Just try another DATA CABLE

InsanitySquared · June 11, 2019, 12:39pm

yeah, the data cable could be the problem. But if all else fails, I think I read somewhere that the params are stored on the SD card, maybe they could be extracted from it?

semo · June 11, 2019, 5:18pm

I try another cable not works
I try the same cable with another Pixhawk device it work

semo · June 11, 2019, 5:21pm

there is no SD card used in the device ,

I just put in SD card when I connect with cable , when using telem I didn’t use SD card

Dose there any param that lock the device ?

InsanitySquared · June 12, 2019, 6:18am

No, not that I know of, let me poke about and see…

semo · June 15, 2019, 7:19pm

I try to connect using QGC but the same happen as shown in the pic

Capture

I need that param coz it has all the tuning

InsanitySquared · June 16, 2019, 3:31am

The other pixhawk you tried on the same computer right? It could be a driver issue. Also check that the baud rate is 9600 when connecting. Also, have you tried to read the parameters over a telemetry (like wireless/ radio telemetry modules). It could work then. Also, try the “Auto” setting when connectiing (I’m suspecting this might be something to do with the connection settings).

Oh, and try re-installing mission planner.

Other than that, there is no “Lock” parameter .

Try connecting over telem (with SD inside)

semo · June 24, 2019, 7:27pm

I try to connect with all way you said , no change .

question :
may be there is a change on the mavlink ? Is it possible to change the mavlink message ?

semo · June 24, 2019, 7:42pm

@InsanitySquared @ambattuhari @tridge2
I got this messages from the console while trying to get the parameters , using MP .

HUD 16 hz drawtime 1 gl True
bps 3526 loss 541 left 111 mem 33.4951171875 mav2 False sign False mav1 118 mav2
0 signed 0
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 224 exp 223 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 244 exp 243 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 4 exp 3 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Get param 1 by 1 - got 0 of 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc
8218 vs 776 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 22 exp 21 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 25 exp 24 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - 24/06/2019 10:34:53 م 2 PreArm: Bad GPS P
osition
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 48 exp 47 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 59 exp 58 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 78 exp 77 pkts lost 1
HUD 17 hz drawtime 1 gl True
bps 3521 loss 549 left 0 mem 34.142578125 mav2 False sign False mav1 118 mav2 0
signed 0
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno 51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 89 exp 88 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Get param 1 by 1 - got 0 of 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc 56923 vs 64841 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 97 exp 96 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno 51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 109 exp 108 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno 51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 125 exp 124 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno 51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 145 exp 144 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - 24/06/2019 10:34:54 م 2 PreArm: Bad GPS Position
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno 51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 168 exp 167 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Get param 1 by 1 - got 0 of 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc 17809 vs 26243 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 177 exp 176 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno 51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 183 exp 182 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno 51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 199 exp 198 pkts lost 1
bps 3359 loss 558 left 0 mem 34.5751953125 mav2 False sign False mav1 112 mav2 0
signed 0
HUD 17 hz drawtime 1 gl True
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 215 exp 214 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 229 exp 228 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Get param 1 by 1 - got 0 of 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 250 exp 249 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc
22341 vs 29783 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 252 exp 251 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 9 exp 8 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - 24/06/2019 10:34:55 م 2 PreArm: Bad GPS P
osition
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 33 exp 32 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.Controls.HUD - Was in onpaint Hud th:Base Thread in Base Thr
ead
INFO MissionPlanner.MAVLinkInterface - Get param 1 by 1 - got 0 of 1
bps 2717 loss 564 left 5786 mem 33.326171875 mav2 False sign False mav1 90 mav2
0 signed 0
INFO MissionPlanner.Controls.HUD - Was in onpaint Hud th:Base Thread in Base Thr
ead
HUD 16 hz drawtime 0 gl True
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 47 exp 46 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 68 exp 67 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 79 exp 78 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 98 exp 97 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 114 exp 113 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 128 exp 127 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - 24/06/2019 10:34:57 م 2 PreArm: Bad GPS P
osition
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 151 exp 150 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 165 exp 164 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 187 exp 186 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 206 exp 205 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 217 exp 216 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 238 exp 237 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc
19823 vs 28285 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc
61339 vs 52361 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc
55977 vs 63931 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc
21549 vs 30527 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc
56071 vs 63509 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc
42133 vs 34695 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc
188 vs 9134 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc
44524 vs 36606 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc
3694 vs 11644 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc
59379 vs 50401 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc
56012 vs 63966 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc
5229 vs 14207 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 255 exp 243 pkts lost 12
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc
39991 vs 48933 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 1 exp 0 pkts lost 257
HUD 1 hz drawtime 9 gl True
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 4 exp 3 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 25 exp 24 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - 24/06/2019 10:34:57 م 2 PreArm: Bad GPS P
osition
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 42 exp 41 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 63 exp 62 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Get param 1 by 1 - got 0 of 1
bps 8032 loss 582 left 120 mem 33.5810546875 mav2 False sign False mav1 261 mav2
0 signed 0
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc
65389 vs 56447 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 81 exp 80 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 84 exp 83 pkts lost 1
HUD 10 hz drawtime 2 gl True
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 100 exp 99 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 116 exp 115 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 130 exp 129 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 146 exp 145 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - 24/06/2019 10:34:58 م 2 PreArm: Bad GPS P
osition
INFO MissionPlanner.MAVLinkInterface - Get param 1 by 1 - got 0 of 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc
46614 vs 38148 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 159 exp 158 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 168 exp 167 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 185 exp 184 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 204 exp 203 pkts lost 1
bps 3491 loss 592 left 0 mem 34.267578125 mav2 False sign False mav1 115 mav2 0
signed 0
HUD 16 hz drawtime 1 gl True
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 220 exp 219 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Get param 1 by 1 - got 0 of 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 240 exp 239 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc
6442 vs 14904 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 242 exp 241 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 252 exp 251 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 17 exp 16 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - 24/06/2019 10:34:59 م 2 PreArm: Bad GPS P
osition
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 33 exp 32 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 49 exp 48 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Get param 1 by 1 - got 0 of 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc
41369 vs 33419 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 67 exp 66 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 70 exp 69 pkts lost 1
bps 3437 loss 601 left 91 mem 34.6875 mav2 False sign False mav1 114 mav2 0 sign
ed 0
HUD 16 hz drawtime 1 gl True
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 86 exp 85 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 105 exp 104 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 127 exp 126 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Get param 1 by 1 - got 0 of 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 138 exp 137 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc
2619 vs 10537 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 140 exp 139 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - 24/06/2019 10:35:00 م 2 PreArm: Bad GPS P
osition
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 160 exp 159 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 171 exp 170 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 190 exp 189 pkts lost 1
bps 3453 loss 609 left 197 mem 33.3505859375 mav2 False sign False mav1 117 mav2
0 signed 0
HUD 17 hz drawtime 1 gl True
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 207 exp 206 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Get param 1 by 1 - got 0 of 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (crc fail) len 33 crc
26977 vs 19059 pkno 22 PARAM_VALUE
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 220 exp 219 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 227 exp 226 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 248 exp 247 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - Mavlink Bad Packet (Len Fail) len 20 pkno
51
INFO MissionPlanner.MAVLinkInterface - mav 1-1 seqno 6 exp 5 pkts lost 1
INFO MissionPlanner.MAVLinkInterface - 24/06/2019 10:35:01 م 2 PreArm: Bad GPS P
osition

Any explain what happen with the mavlink interface ??

semo · June 28, 2019, 10:43pm

any help
I am still waiting ,

Verloop · June 29, 2019, 1:46am

In my experience, it could be the following:

Mission planner is receiving data from the pixhawk when you connect. It will ten ask for the parameters. However, if this request doesn’t reach the pixhawk, nothing happens.

Which means, TX from pixhawk to RX from PC is working, but TX from PC to RX from pixhawk isn’t.

I have seen this happen before due to a mismatch in the logic level of the hardware. Since I use the pixhawk 2.1, I always use a buffer to bring the levels from 3.3 to 5V.

Bhanupratap · December 26, 2022, 7:14am

What is Mavlink command for verticle speed?