Tom Mahood
  • Irvine, CA
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Tom Mahood's Discussions

Any smaller alternatives to the stock Pixhawk buzzer?

Started this discussion. Last reply by Tom Mahood Sep 17, 2014. 2 Replies

I'm interested in replacing the stock Pixhawk piezo buzzer with something smaller but after a lot of time looking, I can't seem to find any specs on it. The schematics on the website show…Continue

Need advice for imaging a steep ridgeline

Started this discussion. Last reply by Tom Mahood Aug 7, 2014. 9 Replies

I'm interested in imaging a possible archaeological site located along the spine of a fairly steep descending ridgeline and am looking for advice on how to approach the imaging. At the very least I'd…Continue

Any good GPS cameras lighter than a Canon SX230 HS?

Started this discussion. Last reply by Tom Mahood Apr 11, 2014. 4 Replies

I've been using a Canon SX230 HS on multicopters for mapping and vertical imaging. I think it does a great job and takes fantastic pictures....but it's heavy! At 220 grams it seriously shortens…Continue

Need help with difficult analysis of log for Loiter crash

Started this discussion. Last reply by Tom Mahood Feb 21, 2014. 1 Reply

I've spent the past 4 hours going through the logs of my tricopter crash with both MP and APM Planner trying to figure out why it went down and I'm stumped. I'm decent with log interpretation and try…Continue

Tags: crash, Loiter


Tom Mahood's Page

Latest Activity

tayyab malik replied to Tom Mahood's discussion Be careful using the new "H" frame layout option in MP!
"hi, i built a quad H recently. which configuration should I use ?? the quad X frame type with motor directions of quad H ?? or motor directions of quad X "
4 hours ago
Tom Mahood replied to Rob_Lefebvre's discussion AC3.3 TriCopter Improvements, need Input and Testers!
"Hi Rob....I have a well flying, large, Pixhawked  tricopter (17" props) I'd be happy to test on, but I won't be able to do it for about a week due to travel. It suffers from just a little bit of yaw wobble at this point, most of…"
May 15
Tom Mahood replied to Sefton's discussion Please critique my Pixhawk platform shopping list
"I agree the Bixler is too tight for all the electronics, but it's quite a technical jump to a wing. A plane like a Skywalker 2013 is very easy to fly and has more than enough room for electronics. You haven't listed FPV gear yet, and…"
May 6
Tom Mahood replied to Kyomo Jung's discussion What's the difference between DesRoll and RC1
"I think, but am not certain, that a Desired Roll output only occurs during autonomous flight modes. These would be the modes where the Pixhawk has full control of the roll.It's been my experience that Desired Roll is always recorded as zero…"
Apr 23
Tom Mahood replied to Edmund Comber's discussion ESCs to use with PixHawk in the group PIXHAWK
"It sounds like you have some experience in dealing with ESCs. But if you run into any difficulty with the Castles you might have a look at this thread. In its first response post there is also a link to more info on dealing with the Castle's…"
Apr 5
Tom Mahood replied to Edmund Comber's discussion ESCs to use with PixHawk in the group PIXHAWK
"Edmund, I'm not familiar with JETI ESCs, but I am interested in high quality so I had a look. The only thing I see about them is that they come with fixed end points, as do many Opto ESCs. You don't Calibrate them. So you would have to…"
Apr 4
Tom Mahood replied to Christopher Harrod's discussion Newbie Question: How do I supply power to APM?
"The pic you linked to shows one female and one male plug, as it should be. Those yellow plugs are called XT60 connectors. Ummmm, not to be rude, but the questions you are asking are VERY basic, and things you should already know if you're…"
Mar 28
Tom Mahood commented on Chris Anderson's blog post Photos from the Ferrara Drone Show
"(Italian Design) + (Drones) = Amazing!"
Mar 28
Tom Mahood replied to Christopher Harrod's discussion Newbie Question: How do I supply power to APM?
"It would be best for you to use a Power Module. A full description for how to power an APM is here. I'd recommend not bothering with a telemetry radio until you get things running with just the basics."
Mar 28
Tom Mahood replied to Tim Dickinson's discussion Vibration issue?
"You will need to post a dataflash log for anyone to examine your vibration level. And if it's an older APM you'll have to make sure your IMU logging is turned on (PX4s and Pixhawks have it turned on by default)"
Mar 28
Tom Mahood replied to Kelly Ness's discussion Yaw Blues
"Many times it's one, silly thing that gets overlooked. Not that it's ever happened to me..... I find the two CCW, one CW setup to be the best, although they both will work. By running all motors CCW the tail motor has to tilt a lot more to…"
Mar 28
Tom Mahood replied to Kelly Ness's discussion Yaw Blues
"I've found Autotune works very well for pitch and roll PIDs. Yaw is a bit trickier because some frame/motor combos seem prone to "yaw wobble" with APM. I've suffered from that and was able to cut out most of it by turning the…"
Mar 28
Tom Mahood replied to Kevin Garland's discussion Osd Screen switch
"Switching is setup on the first screen of the Config Tools GUI for the MinimOSD, not Mission Planner. You have a choice of two panels. The first one you populate as you like, and leave the other blank. Then use the switch setup in Config Tools to…"
Mar 25
Tom Mahood replied to Christopher Gehrich's discussion Trouble With 5V Linear BECs in Parallel in the group ArduCopter User Group
"It's considered poor practice to power a system with BECs in parallel. Sometimes it can work, but often times problems occur, yours being not the worst of the possibilities. You can blow up a BEC doing this. BECs are not like running batteries…"
Mar 24
Tom Mahood replied to Craig Thompson's discussion MinimOSD Config Setup & Connectivity...
"Have you tried using the usual Config Tools for the Minim (R800 being the latest) instead of the Hazy one? And the other question is does the LED on the Minim flash when you attempt to read or write, thus showing a communication attempt? Things like…"
Mar 20
Tom Mahood replied to Tazmoe's discussion I think I found the problem, but what is the cause?- Pixhawk switched flight modes by itself...
"Vcc will move around a bit and I'd say your's is OK. It looks within normal limits. Maybe tweak your transmitter's flight mode settings a bit, if possible, so you are more centered in the ranges, as Cala suggested below."
Mar 18

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Rotors and fixed wing

Tom Mahood's Blog

Personal Drones May Present Public Safety Concerns

Posted on August 29, 2013 at 10:30pm 9 Comments

...Or so says the Joint Regional Intelligence Center. JRIC is yet another anti-terrorist agency most people have never heard of and is comprised of the Feds and law enforcement agencies in the counties of Southern California. The following single page…


A composite folding H-quad

Posted on August 21, 2013 at 12:40pm 18 Comments

I've just wrapped up a new design based upon a lot of ideas I stole found on this site.…


Comment Wall (1 comment)

At 7:14pm on December 12, 2013, Dennis Okeefe said…

this is cool.  i was looking for how to import .kmz files into mission planner and saw your post about exporting them.  i immediately realized who you were since i am a big fan of yours - black world stuff you have posted.  are you new to this "hobby"?   it would be a useful tool for "research".  anyway, do you know if you can import data directly from google earth into mission planner?  


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