Replies to This Discussion

Permalink Reply by Wesley Chuen on April 27, 2012 at 6:54pm

I read it in another post that basically you need to cut two of the pins that connect between the APM2 and the GPS board.  I haven't tried it myself.

• ▶ Reply

Permalink Reply by Jack on April 27, 2012 at 7:58pm

Here is a pic of a simple mod, you have to cut the TX trace it is the one on the end. You cut with a razor knife the solder were the GPS conects to the board. Hope the pic shows it enough. When you cut the TX trace the buss will not have to share the signal so you can plug your Aux GPS in the open port and it workd great. If you want to go back to the original on the Daughter board you just have to re-solder the TX trace.

 

Hope this helps

• ▶ Reply

Permalink Reply by madhuran wilson on April 28, 2012 at 7:37am

thats great! thankyou for the infomation

• ▶ Reply

Permalink Reply by Wesley Chuen on May 3, 2012 at 12:47pm

The picture is very very small and can't really see.  Did you just cut off the first connector between the GPS and the board?

• ▶ Reply

ModeratorPermalink Reply by Dean Wynton on May 3, 2012 at 1:05pm

Here this might help.. Its the TX

Attachments:

• 3329.pdf, 113 KB

• ▶ Reply

Permalink Reply by Wesley Chuen on May 4, 2012 at 1:08pm

Ah, I see.  Thank you!  

So it's the last 2nd pin in the picture.  Hmm... if it gets a 3D fix, it would send out a 3D fix signal as well.  But I guess it should be ok since if this GPS would get a 3D fix, the external one would have gotten a 3D fix as well.

• ▶ Reply

ModeratorPermalink Reply by Dean Wynton on May 4, 2012 at 1:29pm

I have never tried this? but if you are going to do it you may as well know what you are cutting..

• ▶ Reply

Permalink Reply by Wesley Chuen on May 4, 2012 at 2:06pm

I'm not going to cut it now.  I tried to mount the APM2 under the copter yesterday, but there are other issues that make it not feasible.  I'm going to mount it back outside and use the GPS again.

• ▶ Reply

DeveloperPermalink Reply by R_Lefebvre on May 4, 2012 at 3:14pm

I would consider your anti-vibration mounting, as it might not have been good enough.  I'll be taking another crack at it shortly.

• ▶ Reply

Permalink Reply by Wesley Chuen on May 4, 2012 at 3:21pm

I'm going to mount it back to where it was before, right behind the main shaft.  But this time, I'll have a heavy copper plate attached to the bottom of the circuit board, then sit on top of my favorite anti-vibration sheet. I'll also make the bottom plate a bit bigger, so that I can mount a cover to cover the entire APM2 to avoid the direct down wash pressure.

• ▶ Reply

Permalink Reply by Jake Stew on July 13, 2012 at 12:40pm

Wouldn't it be better to cut the power trace?  If you cut the TX line the unit will still be powered and drawing current from your battery.

• ▶ Reply