Vernon Barry
  • Goose Creek, SC
  • United States
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Vernon Barry's Groups

Vernon Barry's Discussions

Proposed safety changes here in the forum

Started this discussion. Last reply by Jake Stew Aug 13, 2012. 8 Replies

Look, I'm sorry. It's a pet peeve of mine that people post here, telling me they have knowingly flown out of range of radio control of some method. Some have been so stupid as to make an FPV…Continue

Flashing 3DR ESCs or RC timer ESCs with MUCH better firmware

Started this discussion. Last reply by Hessel Jun 1, 2013. 20 Replies

Ok, so here's the basic deal. The stock firmware coming on the ESCs works as intended but is far less than ideal for use in our quads. The problem here is that due to startup sequence timing from…Continue

 

Vernon Barry's Page

Profile Information

About Me:
My hobbies inlcude real turbine engines, lasers, cnc machines, 3D printers, and restoring classic cars. I fly RC helicopters, both nitro and electric.
Please tell us a bit about your UAV interest
I'm just getting into the UAV hobby but have lots of experience with RC helis. I have good experience in programming in Arduino as well.
Hometown:
Charleston SC

Comment Wall (3 comments)

At 10:46am on May 21, 2012, James Dinh said…

Hi Vernon,

I have APM 2.  Everything worked great, flying great.  Then, I had a crash.  My fault, not the board.  I crashed into a tree.  Now, the board lights up fine when I plug it in via USB to my computer.  All the LED lights show normal function.  I get GPS lock, I can access Mission Planner, erase eeprom, load new codes (2.5.5), etc.

With the USB still in, if I plug in the lipo and arm the motors, I can throttle up and the motors spin normally.  But as soon as I unplug the USB (lipo is still plugged in) the board goes dark and I get no response from the motors other then the dreaded continual beeps.  Somehow, it seems that I'm not able to power the board via the output pins (jumper is in on the JP1 pin), but can power the board via USB.

I've checked all the soldering on all my wires going in and out of the PDB.  I've visually checked the board itself.  All the soldering looks good.  I guess there are many things that could have damaged the board during the crash, but why does it work normally as described above?  Any ideas or suggestions would be much appreciated. I miss my robot friend. :(

At 11:17am on May 21, 2012, Alonso Rodriguez said…

James,

Make sure your jumper is still present.
I had something similar happen to me.
I thought it was the jumper but ended up being the diode (D1).
What I discovered is that D1 burned up on me.
Dont know how or why.
D1 is nearly impossible to replace as it sits just below the jumper.
What I ended up doing was soldering a wire from VCC to +5V.
Basically bipassing the diode.

Hope this helps.

At 9:32am on June 15, 2012, Al Lowrie said…

Have you had any problems resulting from the bipass thus far? Are you powering the APM from the Output rail only with the jumper in place? Thanks, Al

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