Al Lowrie
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  • Cheyenne, WY
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Al Lowrie's Discussions

Is anyone doing APM2.5 inspection and repair?

Started this discussion. Last reply by Abhsiehk Mukherjee Dec 31, 2013. 10 Replies

I have a new APM2.5 which was damaged by exceeding the .5A current limit. I added a .6 A Pan servo to the board and the result was a hardware failure. I can get the Terminal and Mavlink connections,…Continue

New APM2.5 suddenly quit - firmware / hardware issue? - Need troubleshooting help

Started this discussion. Last reply by Al Lowrie May 6, 2013. 8 Replies

My new APM2.5 just quit working while I was doing the final setup on my plane. I was running v2.40 firmware because the newer versions would not work on the board when it arrived last week (2.70 was…Continue

Tags: RLL2SRV_D, apm2.5, mavlink, compass+disabled, times

APM2 won't tranfer data over Mavlink

Started this discussion. Last reply by Kenneth Beason Dec 1, 2012. 3 Replies

Well, my APM2 quad just flipped upsidedown in flight about 3 feet off the ground. Very minor damage to aircraft. Now, the APM2 won't transfer data through the Mavlink. All indicator lights come on…Continue

 

Al Lowrie's Page

Latest Activity

Abhsiehk Mukherjee replied to Al Lowrie's discussion Is anyone doing APM2.5 inspection and repair?
"Hi I have APM 2.6 board. Problem what i am facing is that the board is not getting power-on means the red and blue lights are not glowing when i am connecting through usb, only the orange light is glowing. Anyone plz tell suggest…"
Dec 31, 2013
Al Lowrie replied to def2att's discussion APM 2.5 No dataflash Compass init error
"I'm not seeing your pic for some reason."
Aug 21, 2013
Al Lowrie replied to Al Lowrie's discussion New APM2.5 suddenly quit - firmware / hardware issue? - Need troubleshooting help
"No the board is different. Sorry."
May 6, 2013
Alberto Mennella replied to Al Lowrie's discussion New APM2.5 suddenly quit - firmware / hardware issue? - Need troubleshooting help
"Hi, does this fix works with APM 2.0 either ?!"
May 5, 2013

Developer
Bill Bonney replied to Al Lowrie's discussion Is anyone doing APM2.5 inspection and repair?
"Great. Glad to hear you fixed your board."
Mar 13, 2013
Al Lowrie replied to Al Lowrie's discussion Is anyone doing APM2.5 inspection and repair?
"Not as far as I know. You are pretty much on your own to search the wiki and discussion pages, and hope for response to your questions.  Do you have a 3DR radio? If so, can you connect with it?"
Mar 12, 2013
Mike Mac replied to Al Lowrie's discussion Is anyone doing APM2.5 inspection and repair?
"I have a board with a broken USB port. I have inspected and done some continuity checks but no luck. Does anyone have any hints? Has anyone compiled a troubleshooting guide at various locations?"
Mar 11, 2013
Al Lowrie replied to Al Lowrie's discussion Is anyone doing APM2.5 inspection and repair?
"Thanks for the great heads up! My board is now fixed! Replacement of the (SOT23-5) voltage regulator at U3 is all it took. Sensors are back up and there are no errors in Terminal. It is a tiny CB repair, but with proper technique is not a…"
Mar 11, 2013
Al Lowrie replied to def2att's discussion APM 2.5 No dataflash Compass init error
"Well, my board is fixed! Replacement of the (SOT23-5) voltage regulator at U3 is all it took. Sensors are back up and there are no errors in Terminal. It is a tiny CB repair, but with proper technique is not a problem."
Mar 11, 2013
Al Lowrie replied to def2att's discussion APM 2.5 No dataflash Compass init error
"I just checked my board and the USB pins are all separated properly.  "
Mar 11, 2013
Al Lowrie replied to def2att's discussion APM 2.5 No dataflash Compass init error
"There is no way to test the entire board other than through the tests available on the terminal window of MP. If (like me) you can not access "logs" in the terminal to do a complete reformat of the dataflash, then check to see if your…"
Mar 10, 2013
Al Lowrie replied to def2att's discussion APM 2.5 No dataflash Compass init error
"The TPS79133 (SOT23-5) chip is new on the APM2.5.2 board. It is a 3.3v regulator. I have only 1.3 volts at the output pins. I have ordered a new one from DigiKey. Hopefully it is my only problem as well."
Mar 8, 2013
Al Lowrie replied to Al Lowrie's discussion Is anyone doing APM2.5 inspection and repair?
"After reading WarMonkey's post, I just checked, and found that I have only 1.34v on the output pins of the U3 Voltage Regulator. If I apply 3.3v to the output pins the board should power up? If so, that would be really good news. Replacing…"
Mar 6, 2013
Al Lowrie replied to def2att's discussion APM 2.5 No dataflash Compass init error
"I just checked, and found that I have only 1.34v on the output pins of U3. Are you saying that if I apply 3.3v to the output pins the board should power up? If so, that would be really good news."
Mar 6, 2013
Al Lowrie replied to Al Lowrie's discussion Is anyone doing APM2.5 inspection and repair?
"I have tried many different versions of FW. They will load but I don't get past Initialization in MP. Unfortunately I can't get logs to open up in terminal either so I cant reset the board. "
Mar 6, 2013
WarMonkey replied to Al Lowrie's discussion New APM2.5 suddenly quit - firmware / hardware issue? - Need troubleshooting help
"Well i've just fix my board. it's U3 in sch PartNo. TPS79133 cause this.Repair costs 0.5$ in china http://diydrones.ning.com/forum/topics/apm-2-5-no-dataflash-compass-init-error"
Mar 2, 2013

Profile Information

About Me:
Ex-ultralight and hangglider pilot, illustrator, graphic designer, CAD & Animation Designer, RC pilot.

websites: www.skywardrc.com, www.pilgrim13.com
Please tell us a bit about your UAV interest
Started out in RC helis and morphed into FPV multirotors. I am most recently building autonomous multirotors and long range FPV systems. Mission Planner is clearly the best amateur system on the market for the serious UAV builder. My current FPV Penguin is capable of 2+ miles.
Hometown:
Cheyenne, WY

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