Tom Mahood
  • Irvine, CA
  • United States
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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 Pixhawk.org 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

Tom Mahood commented on Thomas J Coyle III's blog post Above spectacular wildfire on freeway rises new scourge: drones
"The assumptions in many of these posts are that the problem was created by idiot operators of the drone(s) (one report said that 5 (!!) drones were sighted.) But that situation has what I'd call extenuating circumstances. I'm pretty…"
Jul 19
Tom Mahood commented on Thomas J Coyle III's blog post Above spectacular wildfire on freeway rises new scourge: drones
"It's been my observation that in the case of these "drone tantrums", it's the air ops managers, not the pilots, who shut things down when someone hollers "DRONE!" The pilots willingly fly through flames, smoke and who…"
Jul 19
Tom Mahood replied to t960's discussion Overheating Motors, Help!
"Any generic 4S, 25 or so C battery will work for your purposes. You just need to see if there's enough lift being generated, as well as the amps and watts. Make sure your copter total weight is at least in the ballpark for eCalc. "
Jul 17
Tom Mahood replied to t960's discussion Overheating Motors, Help!
"I'd guess you'll be OK with 13" props, but it's a guess. The way to know for (almost) sure is to use eCalc. It will give you your current draw and power."
Jul 17
Tom Mahood replied to t960's discussion Overheating Motors, Help!
"I second that your props are far too big for those motors. I'm running a Tarot quad with those size props using a T-Motors MN3110-26 470kv on 4S. Note that these T-Motors are rated at 330 watts, as is claimed for your Turnigy. That said,…"
Jul 16
Tom Mahood commented on Chris Anderson's blog post Bormatec releases new folding drone for Pixhawk
"Molded EPP tends to be more expensive than EPO. But it's much more durable and crash resistant. After going through several EPO airframes I now am a true believer in EPP. The only other wings I know of in EPP are those from CrashTestHobby and…"
Jul 11
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 "
Jul 5
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

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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…

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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.…

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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?  

timmy

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