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pixhawk signal logic voltage?

Started by Hugues. Last reply by Artem Bulashev 17 hours ago. 4 Replies

Hi,What is the signal's logic voltage level on pixhawk I2C and GPS port? 3.3V or 5V?I do not have an oscilloscope so if someone had the answer, it would spare me to buy this equipment :)ThxHuguesContinue

CAN NOT INVOKE AUTOTUNE FLIGHT MODE

Started by Marco C. Last reply by Marco C Nov 30. 15 Replies

Hello everybody,I'm trying to fly my exa in autotune flight mode, unfortunately during my indoor test I can't invoke it.As you can see in the attached imagery once I switch on flight mode 3 pixhawk…Continue

Apm 2.6 Impossible stabilization, what do you think about this problem?

Started by Freddy Alcarazo. Last reply by Freddy Alcarazo Nov 27. 9 Replies

Hello dears from diydrones.This quadcopter that I mounted using apm with AC 3.1.5 and the frame x alien..I did  a cheap power distribution board for give supply energy to four motors, but I don't…Continue

Tags: motors, apm

back up power

Started by Marco C Nov 27. 0 Replies

Hello everybody,I was wondering if it is possible to configure servo rail for back up power, I have read this sentence on this wiki …Continue

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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) 

Comment by Paul N Braida M.E on April 18, 2016 at 6:30am

both boards have a 3DR stamp on the bottom and used to work. Now the one will upload and verify the firmware but not connect to Mavlink and the other will not upload firmware or anything. Both boards are receiving the required 3.3 volts.

I don't know, maybe just scrap the boards?

3DR do not seem to want to help me on this. Maybe I will forget APM and go with the NAZA controller. 

Comment by bijoux-de-lithotherapie on April 18, 2016 at 1:47am

Hi All :)


Developer
Comment by Randy on April 13, 2016 at 5:14pm

@PaulNBraida,

Maybe try loading Plane onto the broken boards?  It's possible (if you're not using a 3DR APM) that the last copter firmware meant for the AVR boards doesn't fit on it because the manufacturer has put a bootloader that's slightly too large on it.

Also even though you can't connect via MAVLink you should still be able to upload firmware.  The issue is that Mission Planner (I assume this is what you're using) needs to first recognise the board (so it can get the correct firmware) and then it needs the board to be in bootloader mode to actually upload the firmware (the board is in bootloader mode for the first few seconds after being powered).  This means you might need to mess around a bit, connecting and disconnecting the board at the appropriate times.  I.e. plug in the board, push the MP's firmware upload button, disconnect and reconnect the board.

Comment by Paul N Braida M.E on April 13, 2016 at 8:36am

I still need help with my two APM 2.5. On one I can upload and verify firmware but it times out connecting to Mavlink. Error no heartbeat packets received. The other APM cannot upload firmware or connect. It has the same error. The port & baud are set ok. While counting down trying to connect I can see the small amber LED flashing slowly. Voltage on the outside pins of IC 2 is ok. I changed the volt regulator.

I'd really like to use these controllers, not just junk them.

Thanks

Comment by Chris Leech on April 10, 2016 at 7:01pm

ANother thing that happens is that unless you have some aluminum or kapton tape over the area you will probably blow the tiny caps and resistors off the PCB. And believe me, once they are gone, you are in a fix. Get a nice close up photo of this area to see what I mean. If you need some, I can post a few of one (APM2.6) that I am working on.

 
 
 

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