About Me:

Software engineer

Please tell us a bit about your UAV interest

Ground vehicles

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Preston posted a discussion
I am running the latest version of MP (1.2.28) and am getting some strange behavior.When I connect to my APM (2.5) and refesh the parameters it goes ok.  Once the parameters are loaded the screen goes into a repainting loop as it tries to display. …
Jan 5, 2013
Preston posted discussions
Dec 23, 2012
Preston replied to Rick Eis's discussion Optical Flow
"I just finished wiring one up on my APM2.5.  I have gone through the testing and it seems to be working.  I am about to post a couple of questions regarding 'focus' of the sensor and the python script dying.
I made a couple of suggestions at the…"
Dec 23, 2012
Preston replied to Bhanu's discussion Too sensitive throttle in Arducopter Hexa & Spektrum DX-8
"I too fly a hex, only with a DX7.  I'd suggest you repeat the step for radio setup and make sure it is working correctly.
http://code.google.com/p/arducopter/wiki/AC2_First   It is number 1 under the heading Setup Steps.

Setting your expo on the…"
Dec 23, 2012
Preston posted a discussion
I see that on the download site there are param files that list all the setting used to fly a given platform.  As there is one for the platform I'm using (3DR Hex), I'd like to try it, but I don't know where/how to implement the file.Do I put it…
Dec 14, 2012
Preston replied to Michael Brown's discussion APM 2.5-Getting Logs-Need Help
"I had this issue last night.   However I think the issue is unrelated to admin access.
It appears that having the mission planner connected is causing problems with the terminal session.  Mission planner connection is occupying the com port when the…"
Dec 12, 2012
Preston replied to binzi's discussion help to MTK 3329 5hz firmware
"I too was looking into this idea of saving my changes (hz and sentences) to flash. I came across the 390 command as well. Here's the rub. If you issue the PMTK490 command it will list out the current settings. The first value is the number of times…"
Feb 21, 2011
Preston replied to David Mobach's discussion Mediatek GPS: Change default output to binary?
Did you get a resolution to this? I have the same need to change the default behavior of my GPS.

Feb 21, 2011
Preston replied to Preston's discussion What is LED B on the IMU/Oil Pan used to indicate?
"Hmmmm This concerns me. I am running 1.0 and it never goes on, not even dimmly (I turned the lights off to double check). From your replies, it isn't monitoring anything specific, just used as a Blinkenlichten. I wonder if it is any good.

I'll have…"
Jan 14, 2011
Preston posted discussions
Jan 13, 2011
Preston replied to Preston's discussion What is LED B on the IMU used to indicate?
"Thanks Dave....I must not be in the right board/discussion area. I have the IMU for the Ardupilot Mega. My mistake. I'll repost under the Ardupilot Mega discussion.

Jan 13, 2011
Preston replied to Preston's discussion Referencing the additional pins AN0-AN5
"Thanks Knuckle, but I tried using the alias.ssss of AN0-AN5. This works when I write a simple sketch to turn them on, but not when I'm working in the Ardupilot code..

That said, I was able to figure out the answer to my own question. Based on the…"
Jan 4, 2011
Preston posted a discussion
I am hooking up a couple of additional digital lines to AN4 and AN5 as labeled on the IMU. How do I reference them as digital pins from within the code? For example...pinMode(???,OUTPUT);...digitalWrite(???,HIGH);...digitalWrite(???,LOW);What is…
Jan 4, 2011
Preston replied to Preston's discussion ArduPilot Mega IMU Schematic
"I saw that, but didn't realize Eagle was easily available. I'll hunt it down. Thanks.

Dec 30, 2010
Preston posted a discussion
Is there a PDF version of the IMU schematic online anywhere? I am looking for info on the ports labeled AN0 - 5 on the end of the board. My goal is to add both digital and analog devices but am not sure that these are the pins.Thanks In Advance.
Dec 30, 2010
Preston replied to Chuck Bennett's discussion Powered Parachute ArduPilot project.
"Chuck....it has been forever since you posted anything. How did this turn out. I am looking for something that requires less runways then a fixed wing. Any thoughts?

Dec 29, 2010