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 replied to Dan McKenna's discussion Research using IRIS..not allowed!? in the group IRIS
"Dan, the way the law stands as of today, is that you can't fly into federal airspace for non-hobbyist or recreational purposes without a COA from the FAA. Doesn't matter if it's from your property or the USFS's property. The only…"
Sunday
Tom Mahood replied to Dan McKenna's discussion Research using IRIS..not allowed!? in the group IRIS
"Understood. It sounds like you must absolutely, positively adhere to all relevant regulations. But then the answer to your original question is that you can't legally fly your Iris for the research project you described without obtaining a COA…"
Saturday
Tom Mahood replied to Dan McKenna's discussion Research using IRIS..not allowed!? in the group IRIS
"Dan: The problem is you've made an official request for approval to the USFS and they have to respond....officially. They are aware that the only way it is currently legal to fly a non-recreational "drone" in US airspace is with a…"
Feb 27
Tom Mahood commented on Hugues's blog post World's first : the lightest 2-axis brushless gimbal carrying a full HD camera
"The motors were described in the third post. I just picked up an equivalent set from RCTimer for $12 each to experiment with. They appear to be the same as the RCTimer 1806-2300KV Multi-Rotor motors."
Feb 21
Tom Mahood commented on Hugues's blog post World's first : the lightest 2-axis brushless gimbal carrying a full HD camera
"That is extremely impressive. OK, I'll be the first to ask: What motors are those??"
Feb 21
Tom Mahood commented on Chris Anderson's blog post Wired: "Why the US Government Is Terrified of Hobbyist Drones"
"A Phantom 2 can fly with a 3 pound payload???"
Feb 6
Tom Mahood replied to Euan Ramsay's discussion Best tricopter layout
"I prefer the arrangement with the two opposing props. There will be less torque the tail rotor needs to compensate for. And if you are using an RCExplorer type servo/motor hinge, they often have limited travel before they hit their stops. I'd…"
Jan 29
Tom Mahood replied to Channel Islands's discussion Pixhawk 3.2/ Futaba14SG/ CastleCreation QuadPack - Crash Take Off - Flip roll
"I'm sorry if I wasn't being clear enough. You do not calibrate Castle Creations Multirotor ESCs. They are already calibrated at the factory to have a fixed response range. The usual ESC calibration procedure on the APM wiki will not work…"
Jan 29
Tom Mahood replied to Channel Islands's discussion Pixhawk 3.2/ Futaba14SG/ CastleCreation QuadPack - Crash Take Off - Flip roll
"First off, you clearly have either something mis-wired or the channel assignment on your Futaba is wrong. You'll have to straighten that out. Second, you cannot normally calibrate Castle Creations Quad Pack ESCs. They come with factory set…"
Jan 27
Tom Mahood commented on Thomas J Coyle III's blog post Secret Service: Drone that crashed on White House grounds was being used recreationally
"As much as I enjoy bashing on Phantom owners, I wonder if there is some sort of electronic defense at the White House that spoofs GPS signals? I know such devices exist. If so then the Phantom's GPS lock could have been totally hosed and it was…"
Jan 27
Tom Mahood replied to Gábor Zoltán's discussion Adding extra functions to MinimOSD
"Yep, happened to me. It looked like my entire screen was composed of repeating "crystals" except for the OSD text, which was clear. I assumed it was just a bad Minim, and replaced it. Then, after a couple of months the replacement did the…"
Jan 12
Tom Mahood replied to Jonathan Hair's discussion New hex with Pixawk trying to flip on takeoff, w/ log
"For chuckles I extracted your parameters from your log file and compared them to the parameters I currently have in a Tarot 650 running 3.2 on a Pixhawk. I specifically looked at the accel parameters. They were all reasonably close except for…"
Jan 3
Tom Mahood replied to Jonathan Hair's discussion New hex with Pixawk trying to flip on takeoff, w/ log
"Oh, OK. I assumed that was you nudging the stick for roll. If you compare motor 2 of RCOUT with Channel 1 of RCIN they pretty much match so the Pixhawk seems to be wanting to do what it's being asked. So your RC Rx must be feeding something…"
Jan 3
Tom Mahood replied to Jonathan Hair's discussion New hex with Pixawk trying to flip on takeoff, w/ log
"Your RCIN and RCOUTs look OK. Your number 2 motor is being commanded to spin a bit faster than your number one, but not a lot more in the absolute sense and it shouldn't be enough to flip it. I'm wondering if you have your ESCs calibrated…"
Jan 3
Tom Mahood replied to Eos's discussion Almost lost my copter to the great blue ocean today..
"To me it looks like you don't have your RC Rx set properly for a failsafe condition. Have a look at the attached MP plot.It shows the Desired Roll and Pitch, the actual roll and pitch, and the throttle in. Everything is looking good until about…"
Jan 2
Tom Mahood replied to David Cox's discussion Tarot Gimbal and protecting GoPro lens
"I have both the RMRC "GoProtector" and the GetFPV "Layer lens". Of the two I strongly prefer the Layer Lens, despite it being considerably more expensive. I got the GoProtector first. It's held on to the GoPro both by a…"
Dec 30, 2014

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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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