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DUPLICATING output PWM on several PINs

Started by Roberto Apr 12. 0 Replies

Hello,I wonder if it is possible to adjust ardu-software parameters (I need it for a boat, but the same question applies to a plane or a mutlirotor), in order to DUPLICATE output PWM on several PINs,…Continue

Tags: Y, duplicate, multi-engine

building your own APM hardware with arduino mega2560

Started by shanthosh ravikumar. Last reply by Joe Bredestege Mar 22. 6 Replies

i am trying to build the hardware itself .... as of now i have a i2c based mpu9150 only... i'm planning on buying the other sensors soon and maybe make a sensor sheild !! i have tried uploading the…Continue

Handling servos in ArduCopter.cpp

Started by Bernabe Puente Moure Mar 4. 0 Replies

Hello everyone.I am a developer with many years of experience but a complete newbie in Ardupilot.I'm trying to modify the ArduCopte.cpp controller to add the servo handling functionality just as…Continue

quadcopter model dynamique identification

Started by telli khaled. Last reply by telli khaled Mar 2. 3 Replies

hello everybody I confused about quad-copter model identification , since the quad is unstable in open loop ,then how can I identify it since is unstable ??? but if I add a controllers in loop of…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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