Comments

• Developer

  Randy May 20, 2014 at 7:52pm

  @Sean,

      I guess you're triggering "cameras" not "cannons"!  In any case, it may be because the update rate on the pins on the back of the APM are running at 490hz while RC10 and 11 only run at 50hz.  It's likely the servo or whatever that is attached to the pins that can't handle the high update rate.
• 

  Artem May 20, 2014 at 5:44pm

  ok, maybe everyone now this and it is an obvious thing but here is what I just figured out:  the "noisiness" of your 5v source to the FC will affect the number of sats your GPS will find!  In about February I upgraded my copter to 6s and because 3dr doesn't carry a 6s PM I got myself an eBay version which supports up to 30v and provides V, I and 5.2v for up to 3amps. Since it was only 15usd I honestly didn't hope it would work right away, but surprisingly it worked right out of the box!  Voltage and Amps readings on APM were extensively bench tested with a borrowed watt meter and my multimeter to confirm their worthiness. Everything checked out good, in fact I was very happy, I didn't even need to adjust anything in MP, I just chose 3dr power module and I had m volts amps correctly comprehended by APM.  around that time I had minor crash in which I though I damaged my 3dr GPS/MAG combo, so the sats were never higher than 11 and that happened only after 5-6 minutes sitting in the open field. since it was flyable and I consistently was getting 11 sats + 1.6-1.8 hdop, I didn't bother to replace it. So here is the culmination:  Last weekend I got a new 3dr gps/mag from a friend of mine and put it on the copter, again 11 sats and no more! I started experimenting with the shielding, but doesn't matter what I tried I still had 11 Sats, that's it.  Finally I switched my attention to my friend's copter to see what was different... the first thing that standed out was that he runs 4s, I took his battery plugged in to my copter.... still 11 sats! ok, the only thing different among our builds left was PM. I took my old 3dr pm, soldered it onto the available leads of my PD board and hooked up a 4s batt, right away I got 13 sats and that number went to 14 in about 2 mins.  that is w/o ANY shielding of GPS... I went back to my 6s ebay PM, took the gnd/vcc wires and put them through an FPV LC-filter. hooray 14sats in under a minute from cold start (due to lack of time the operations took place on different days). now I have at least 9 sats inside the garage with garage door closed, no windows and a second story on-top. 

  just my .02
• 

  Sean Headrick May 20, 2014 at 5:14pm

  Some help please! I have been trying to get two cannons to fire simultaneously while being stabilized by two servo driven gimbals running off pins RC10 and RC11. 

  

  When using 10 or 11 to trigger the cameras works those seem to be the only pins that drive the servos. I have tried multiple times to get RC8,7, just about everything I can

   think of but I seem to be missing something. I am using channel

   7 as my manual camera trigger and have set the servo out function of RC8 to "camera trigger" I am really at a loss. If anyone could point me in the right direction I would sure appreciate it.  
• 

  Shyam Balasubramanian April 22, 2014 at 1:10pm

  @Andre Schoonbee : I think this is a great idea :)

  I am sure, such a mode like "Point of No return" will give more versatility to Arducopter code base and probably, save some folks their copters!
• 

  Artem April 20, 2014 at 7:12pm

  Hi, I am trying to pair 2 air modules of an old 3dr radios, does anyone know how to accomplish this?  
• 

  Longshot7601 April 19, 2014 at 3:37pm

  Does anybody have a link to the Power Module schematic?  Mine isn't working and I want to know why.

  Thanks in advance.
• 

  dr0n3droid April 10, 2014 at 4:10pm

  @António
  I keep that CC BEC around for situations like this. There is no I&V monitor, but but I can still fly.
• 

  dr0n3droid April 10, 2014 at 4:05pm

  @António I feel your pain.
  I busted another PM yesterday in a rover crash. That's two now. If I break 3 more it might be worthwhile to fix them. I found the part I need.
  
  http://www.digikey.com/product-detail/en/PTH08080WAH/296-20432-ND/7...
  
  $6.77 seems reasonable, but $48 for shipping? Something is wrong with the system.
• 

  dr0n3droid April 10, 2014 at 3:32pm

  This is what I used before 3DR started making the PM.
  
  http://m.ebay.com/itm/121306216091
  
  Check your LHS.
  
  Mike
• 

  dr0n3droid April 10, 2014 at 2:54pm

  @António
  
  Attopilot is for measurement only. What's missing is a voltage regulator to give you +5v for APM.