"This looks like a very heated thread.
Unfortunately, upon recovering APM 1.0 board I found that it didn't log any files on board for some reason. So I can't verify what the last commands were of the crash -determine if it still used the…"
Steve's Discussions
APM 1.0 Randomly Stops Transmitting PWMs?? Aircraft crashes...
Started this discussion. Last reply by Steve on Tuesday. 11 Replies 0 Likes
So our plane crashed while flight testing the APM 1.0. The aircraft simply stopped responding to pilot control as if the entire board shut off. We were not using any autopilot modes but was in…Continue
No Logs from Crashed Ardupilot 1.0
Started this discussion. Last reply by Steve May 14. 1 Reply 0 Likes
Our plane just went down today. The pilot was in manual mode and I was monitoring the telemetry on the GCS laptop. All of a sudden Mission Planner freezes and the pilot goes "I have no control!" The…Continue
Xbee Adapter Board Header replacement?
Started Apr 12 0 Replies 0 Likes
I'm trying to repair one of the Xbee boards I have from DIY Drones. Where can I purchase another set of those female headers for the Xbee Xtreambee adapter board? They are really small compared to…Continue
Radio Input PWM Calibration vs Configuration File Update
Started Apr 12 0 Replies 0 Likes
Which one takes priority? The radio PWM trim and min-max ranges can be set through the Radio Input calibration, however the changes sometimes don't appear in the Configuration menu (Despite…Continue
Steve's Page
Latest Activity
Steve replied to Steve's discussion APM 1.0 Randomly Stops Transmitting PWMs?? Aircraft crashes..."We already have an APM 2.0, but are still hesitant to use it due to all the bug reports that appeared after release.
We will definitely purchase the $65 Atmega board, but it is troubling we haven't been able to solidly identify that root cause…"
Steve replied to alex jack's discussion Piccolo UAV system cost"Now that you mention is the Piccolo II might be the cheapest "industry grade" autopilot"
Vernon Barry replied to Steve's discussion APM 1.0 Randomly Stops Transmitting PWMs?? Aircraft crashes..."Well, as Kevin said, the red board is where the problem is. Either replace the IC, or replace the board. Being that it's $65 vs the $150 of the oilpan shield (blue board), how much is reliabity worth to you?
Further, APM 2.0 is less complicated…"
Steve replied to Steve's discussion APM 1.0 Randomly Stops Transmitting PWMs?? Aircraft crashes..."Interesting, so how should I proceed to verify if the APM1.0's multiplexer IC is functioning properly and isolate this intermittent issue?"
DeveloperR_Lefebvre replied to Steve's discussion APM 1.0 Randomly Stops Transmitting PWMs?? Aircraft crashes...
"IMO, we should just close the comments on the Wiki pages and direct people to make important comments in the issues list, or on the board. Nobody is looking at the comments on the wiki pages, so unfortunately, it's where good ideas go to…"
Vernon Barry replied to Steve's discussion APM 1.0 Randomly Stops Transmitting PWMs?? Aircraft crashes..."Thanks, Kevin and sorry to hear those instructions are broken and you messed some equipment in the process, I was just trying to point them in a direction to at least start from.
Again, sorry if I pointed anyone to something wrong."
Vernon Barry replied to Steve's discussion APM 1.0 Randomly Stops Transmitting PWMs?? Aircraft crashes..."Ok, there are a few things that are different about APM 1.0 vs APM 2.0 that make your troubleshooting an intermittent issue like this harder. The APM 1.0 uses a multiplexer IC and thus that is one possible point of failure. This chip is on the red…"
Steve posted a discussionAPM 1.0 Randomly Stops Transmitting PWMs?? Aircraft crashes...
So our plane crashed while flight testing the APM 1.0. The aircraft simply stopped responding to pilot control as if the entire board shut off. We were not using any autopilot modes but was in manual. We recovered the autopilot as it was completely intact while being protected by a wooden enclosure.We set up a test bed with the receiver connected to the APM 1.0 and servos from both the APM rail and the receiver. The receiver and the APM board are powered independently on a power supply, and we…See More
Steve replied to Charles Winter's discussion Powering the Ardupilot Board"APM 2.0 sounds horrible to power up. Did the APM 1.0 have similar issues?"
Steve commented on Max Levine's photo
ArduPilot-Mega 2.0
"How come the APM 2.0 product page is detached from the DIY Drones store? It doesn't come up in any searching and it isn't in the Ardupilot page.
However, the page itself still…"
Steve replied to DJ Raz55's discussion APM 2.0 How to disable the shield's GPS receiver"Does this exist yet?"
Steve replied to Steve's discussion No Logs from Crashed Ardupilot 1.0"Here is my log from Mission Planner"
Steve posted a discussionNo Logs from Crashed Ardupilot 1.0
Our plane just went down today. The pilot was in manual mode and I was monitoring the telemetry on the GCS laptop. All of a sudden Mission Planner freezes and the pilot goes "I have no control!" The plane goes down and we have no idea what happened. It would appear the Mission Planner froze due to the lost of COM Link as that is what it always does when the Xbee flakes out. However, the pilot lost control due to the receiver com link being down as well. It seems the autopilot just died,…See More
Steve replied to Matt Landowski's discussion Created Self Learning PID Algorithm library"I have integrated the SLPID model with a UAV's state space matrix. So far, it isn't working. The SLPID isn't able to stabilize the responses of the MIMO system."
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- About Me:
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Comment Wall (1 comment)
- At 1:37am on August 27, 2011,
3D RoboticsAlan Sanchez said… - Hi Steve, Im really sorry the part for the chassis was defective. It just so happened that I had the same issue today when trying to put together a chassis. There must have been a bad batch somewhere along the way, because all others seem assemble perfectly.Please send an email to help@3drobotics.com with your information and exactly which part it is you need replaced and first thing on monday I will personally take care of it. Seems like you are in Cali so you should get it in no time. Again sorry this happened.
-Alan
Contests
Season Two of the Trust Time Trial (T3) Contest has now begun. The third round was a reliablilty/aerial photography round for both planes and copters, which is now closed. Stay tuned for the next round, beginning soon.A list of all T3 contests is here.
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