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tarot t4-3d gimbal compability with pixhawk

Started by Nichon. Last reply by B Petru 16 hours ago. 14 Replies

Anyone managed to get pixhawk to control the t4-3d gimbal?i've tried following the same steps in the wiki but that was for the 2 axis gimbal…Continue

MAVLink Tutorial for Absolute Dummies (Part –I)

Started by Shyam Balasubramanian. Last reply by Shyam Balasubramanian 22 hours ago. 86 Replies

Hi All,I was recently fiddling around the code for a while and decided to create a tutorial out of it so that others may find it useful. If I would have known this knowledge long back, I am sure I…Continue

Tags: Ardupilot, Mega, the, program, to

Pixhawk external LED?

Started by Hugues. Last reply by Nick Jul 17. 45 Replies

Hi,Anyone succeeded to install external LEDs on Pixhawk?On APM we could configure the param Led_mode to a binary value representing which actions turn LEDs on A5 and A6.Is there an equivalent feature…Continue

No compass calibration no movement at all!

Started by mark liles. Last reply by Craig Jul 16. 8 Replies

Hello, I am using windows 10 and have 2 separate APM2.6I can update and have loaded firmware ver 3.2, and everything goes fine until I get to the compass calibration, and than nothing. NO dots, no…Continue

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Comment by Cala on May 29, 2016 at 1:18pm

Finally I found the gps in Gervais post, reverse Tx and Rx and works :D http://www.rcgroups.com/forums/showthread.php?t=2576614 in Pixfalcon they are reversed :(

Comment by Cala on May 29, 2016 at 1:07pm

No GPS, the green light work, horrible that any stamped references, any documentation, bad product. :(

Comment by Cala on May 29, 2016 at 7:47am

Thank's Tony, perhaps devs take in consideration your intersting sugestions in gihtub https://github.com/ArduPilot/ardupilot_wiki/pulls

Comment by Tony Wall on May 29, 2016 at 7:47am

...so this one defaults to 56k baud out the box, and must be set to 9k to get a reliable flash to the new 3.01 firmware for Galileo support and other improvements. So expect to get hold of a CP2102 USB serial adapter and make-up a cable to connect this GPS directly if you want the best out of it. It should still work out the box on the old firmware, but then in APM you must enable GPS auto config and save config when needed, then hopefully it will set the GPS to 38k and you won't get garbled data (by default from HK it's sending 56K but APM wants 38k kind of hard coded from what I gather). That was my impression, after many hours of work with these devices (like 4 different units/quadcopter builds). The debug messages on the console clearly indicate APM has issues with GPS serial speed, disregarding what the physical port is set to (strange).

Comment by Tony Wall on May 29, 2016 at 7:40am

By the way this GPS unit is very good. It will run up to 10Hz in GPS mode and 3Hz in SBAS-DGPS mode. The only issue is that APM is unable to detect this device at speeds higher then 38k baud, so best leave the update RATE at 500ms (2Hz), The problem is with APM not the GPS, if you connect to a PC with u-Center you should get good results. Until the GPS issues are solved in the current APM (and there are, those horrible arm delay horiz/vert GPS errors still) it will force the GPS back down to 38k baud even after you successfully configure higher rates. You can't even disable auto detection in APM because if you do it doesn't bother detecting any GPS at all (doh).

Comment by Tony Wall on May 29, 2016 at 7:36am

You can derive the pin-outs of the GPS from the PixFalcon documentation here: http://www.pixfalcon.com/download/MICRO-PX4.pdf

Page 4 GPS & I2C port.

Comment by Cala on May 28, 2016 at 5:44pm

the only thing that I found that wire is compatible with Pixfalcon and I found Pixfalcon  labels but 5v is in the middle and not the red one

Comment by Cala on May 28, 2016 at 5:41pm

I opened but anything :(

Comment by Craig on May 28, 2016 at 5:10pm

Guys, someone have this micro gps m8n from Hking?http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=...

I need diagram connections and I can't find and nothing write on the board :( , I only find that red isn't 5v .I'm afraid to burn it. (is for connect to a Pixracer) 

open the case, the board should have the labels to which pin goes where.

Comment by Cala on May 28, 2016 at 4:00pm

Guys, someone have this micro gps m8n from Hking?http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=...

I need diagram connections and I can't find and nothing write on the board :( , I only find that red isn't 5v .I'm afraid to burn it. (is for connect to a Pixracer) 

 
 
 

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