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Damon Pipenberg
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Damon Pipenberg's Discussions
Uploading with GPS Attached
3 Replies
Started this discussion. Last reply by Thomas J Coyle III Jul 7.
Inputting way points
Replied Jul 4
Damon Pipenberg's Page
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I also fried the 74ACT157, I replaced it with a 74HCT157 (cmos), now my servo's run directly to the corner. What could be wrong? Perhaps the gate stays down or something like that. I try a 10k pullup resistor but no positive result.
Man, I'm jealous. I never got to work on fun projects like this when I was in school!
What is your objective with the glider? Slope soaring or are you converting to electric motor? Have you guys looked at the Zagi 60 electric wing? More room and eas…
Damon,
Unfortunately the termination of pin 6, according to Jordi, is not an issue in relation to the upload problem.
However, I did add a 10k pullup resistor connected to VCC to the base of Q1 and it did not help to keep Q1 cutoff until I updated…
Thomas,
The config utility has been modified to do this, see my post here. However, some can still not upload with the GPS connected, so I'm afraid the issue isn't quite solved yet. I don't actually have the problem, so it is difficult for me to tro…
Damon,
I got the same voltage reading on the base of Q1 that you did indicating that the GPS should be off during the up load.
I believe that root cause of most of the upload problems with the GPS connected had to do with resetting the Atmega proc…
Some people have been having issues uploading to their ArduPilot while the GPS is connected. I did some investigating today to determine where the issue may be.
I did a quick simulation of the circuit that turns the GPS on and off. This is a rough…
Actually the VN100 will be completely useless for your project. It doesn't account for Centripetal....has no way too....Doesn't know airspeed or GPS ground speed. It even says it in the manual....well kinda illudes to it. Unfortuneately you'll have…
As I said above, we're using a Vectornav VN100 as the IMU, more specifically a AHRS. This has 3 axis of accelerometers, gyros, and magnetometers on a single PCB, and has a microcontroller on-board that implements an extended Kalman filter to estimat…
David,
I believe that there is a separate problem with the EM406 GPS. I'm afraid my software fix will not fix that problem. For now, it seems that the accepted fix is to disconnect the GPS during uploading.
I am using the u-blox GPS, not the EM406,…
David,
Have you tried uploading with the GPS disconnected? Please try that and report back with your results.
If that fails, try disconnecting the shield and connecting the FTDI directly to the AP.
Damon
Nice project :)
Are you going to pick Ardupilot with an IMU as a platform? Are you building one from scratch? I hope you know the Paparazzi project, which is already quite advanced and maybe more appropriate if you only have one summer?
Nice looking glider.
The VN100 is a very nice piece of hardware too, alot of the hard work of implementing an IMU solution has been done for you in the EKF onboard the chip.
Look forward to watching your progress. :)
I'm an undergrad EE student at Georgia Tech and this summer I'm working in an aerospace research lab at Penn Sate University, headed by Dr. Jack Langelaan. My project is to outfit a Zagi THL glider with an autopilot system. The reaserch is being fun…
Jordi - not a problem, glad to help. I'm still confused about one thing - what pin does the official DIY drones cable bring out, DTR or RTS? From the schematic on FTDI's site, I thought that it was RTS, in which case the Sparkfun board should work,…
I should explain a bit about what I've done here. I determined that my problems with uploading were due to the cable not resetting the ArduPilot. You should note that not all problems with uploading are due to this - as Chris mentioned above, you mu…
Profile Information
- About Me:
- I'm a student working in Dr. Jack Langelaan's lab at Penn State University. I am working on getting an ArduPilot up and running on a Zagi (flying wing) glider. We plan to make a number of modifications and additions to the ArduPilot code, which will be posted here as they are developed.
Damon Pipenberg's Blog
Penn State University ArduPilot Project
I'm an undergrad EE student at Georgia Tech and this summer I'm working in an aerospace research lab at Penn Sate University, headed by Dr. Jack Langelaan. My project is to outfit a Zagi THL glider with an autopilot system. The reaserch is being funded by the NSF, and the aim is to work on developing open-source autopilot hardware and software, with a goal of having the drones do useful work, such as monitoring meteorological conditions
We want our autopilot to be based around an IMU. We're usi… Continue
We want our autopilot to be based around an IMU. We're usi… Continue
Posted on July 6, 2009 at 10:36am — 5 Comments
Dead multiplexer?
Wondering if anyone might have experienced a problem that I'm having. My ArduPilot has been working fine, but yesterday, the servo outputs suddenly quit working. After doing some troubleshooting, I think I've narrowed the problem down the the multiplexer (74ACT157). It gets power, and gets a proper signal from the failsafe, and I found a 50 Hz signal on the inputs. However, the outputs are always low, at 0V.
I've been using a 4-cell, 4.8V receiver battery to power my setup. When fully charged,… Continue
I've been using a 4-cell, 4.8V receiver battery to power my setup. When fully charged,… Continue
Posted on June 30, 2009 at 8:17am — 28 Comments
Breakout board for Sparkfun u-blox GPS module
I received my u-blox GPS receiver and connector from Sparkfun recently, and needed a PCB to hook it all together. I've put together a simple layout including a lithium backup battery and a 4-pin 0.1" header to connect it to my ArduPilot.
I've attached the Eagle file for the layout. I case you don't have Eagle, you can get it free at… Continue
I've attached the Eagle file for the layout. I case you don't have Eagle, you can get it free at… Continue
Posted on June 23, 2009 at 8:30am — 8 Comments
Comment Wall (1 comment)
- At 10:10am on July 6, 2009,
Jerry LeDrew said…
- Great work Damon ....
I am 73 and was about to make an adapter leaving out pin 6.... But now I don't have to ...I am a hardware man more then a software person ...Before I did my first Read- the improvised way I found smoe Extraneous data not like waypoints and my rudder was not responding in auto-mode....Writing new data cleaned it out .... ArduPilot Config. utility works now Thanks to your software change ....
GPS ____UNPLUGED
Tnx agn .... Jerry ( VO1ET )
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