Tom Mahood
  • Irvine, CA
  • United States
Share Twitter

Tom Mahood's Friends

  • Gordon Hamm
  • Brian
  • Michael Hadsell
  • Andrew Sommer
  • Forrest Frantz
  • Tobin
  • William Cox

Tom Mahood's Groups

Tom Mahood's Discussions

Any smaller alternatives to the stock Pixhawk buzzer?

Started this discussion. Last reply by Tom Mahood Sep 17. 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. 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. 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. 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 airmazingvideo.com's discussion Frame Type: what would you suggest to program?
"It looks like X would be a good choice based upon your picture. I'm not sure if your front arms are longer than your rear? If so, then maybe V. If they are the same, I'd stay with X. Your motors really are in the X positions, it's…"
Tuesday
Tom Mahood commented on Greg's blog post Quadcopter drone 'deliberately flown at passenger airliner' over Essex
"Notice that in the actual report the incident was given an official Degree of Risk of "D". Poking around the airproxboard site turns up their definition of a D Degree of Risk: "Risk not determined: aircraft proximity in which…"
Tuesday
Tom Mahood commented on Greg's blog post Quadcopter drone 'deliberately flown at passenger airliner' over Essex
"Rather than reading the account in the Daily Mail (Sweet Jeeezus!), the actual report is much more informative and may be found here. While the headline screams "deliberately flown at passenger airliner", the actual report uses different…"
Tuesday
Tom Mahood replied to Richard Evans's discussion My PIXhawk based F750 flew away..
"It doesn't appear you had a brown out or GPS glitch. What is odd is that just after you took of (in Stabilize Mode), all your RCIN values ceased changing and remained at fixed values until your aircraft crashed. I would recommend you take a…"
Tuesday
Tom Mahood replied to Ray Collazo's discussion Castle Creations ESC Wont Calibrate
"Glad it worked out. I wouldn't have guessed a flaky Pixhawk. I think you'll be very pleased with that combo. The performance and size of the Castles have made it worth my putting up with their quirks."
Oct 15
Tom Mahood replied to Ray Collazo's discussion Castle Creations ESC Wont Calibrate
"Ray, I changed some of the ESC timing settings but I run 17" props on T-Motor MN3110 470KV motors, sorta large. In any case under the Castlelink motor tab I set Motor Start Power to High, Motor Timing to Low and PWM Rate to 16 KHz. I believe…"
Oct 8
Tom Mahood replied to Ray Collazo's discussion Castle Creations ESC Wont Calibrate
"Looking at the notes I made at the time, I see the Castle ESCs won't arm unless the PWM value is less than 1.11 millsec. With the Mot_Spin turned on, you might be exceeding that. You might try turning off the initial motor spinning and see if…"
Oct 7
Tom Mahood replied to Ray Collazo's discussion Castle Creations ESC Wont Calibrate
"By any chance do you have your motors set to spin when armed? I believe the code adds in a small amount of PWM to pull that off. I have mine set to not spin so I'd expect to see my RCOUT equal my RCIN."
Oct 7
Tom Mahood replied to Ray Collazo's discussion Castle Creations ESC Wont Calibrate
"I forgot about pushing the safety button. The post I linked to was in regard to an APM, which has no button. I have a couple of Pixhawks and they work exactly as you described in your first paragraph. I haven't looked to see if on my Pixhawks…"
Oct 6
Tom Mahood replied to Ray Collazo's discussion Castle Creations ESC Wont Calibrate
"Ray, if you are running the standard Castle Multirotor firmware on your ESCs, then they can't be calibrated. They have fixed endpoints. The normal APM calibration routine is a waste of time. You have to adjust the endpoints on your RC Tx…"
Oct 5
Tom Mahood replied to RC_Payne's discussion What killed the cat? Crash analysis - please help! :)
"Andre's right. Have a look at the plot showing the portion of your flight when things went bad. Note that the BaroAlt and RelAlt diverge at the point the climb started. Your flight controller was taking actions based upon the RelAlt, so it…"
Sep 27
Tom Mahood replied to Mr vern's discussion Newly Build Quad Spins Clockwise. Any Advice?
"From your screenshot your prop rotations look wrong. Check them carefully against the APM setup"
Sep 21
Tom Mahood replied to FlyHigh's discussion Pitch affects roll in loiter?
"You didn't attach a log but I'd guess wrong frame type."
Sep 21
Tom Mahood commented on Matthew Schroyer's blog post Less than two weeks remaining to get this high-visibility vest for drone ops
"Ummmmm, while it's probably a brilliant idea (the color, at least), between my goggles and ground station I look dweeby enough already. I think I'd be more interested in urban camouflage colors."
Sep 18
Tom Mahood replied to Bim's discussion Good setup for research purposed drone?
"The most popular Rx that I've seen with the Taranis is the FrSky X8R. I've never used it but have heard good things. It's sometimes packaged with the Taranis Tx. I suspect if you really need to lift a total of 4 kg you might have to…"
Sep 18
Tom Mahood replied to Tom Mahood's discussion Any smaller alternatives to the stock Pixhawk buzzer?
"True in many cases. And GS OSDs provide the same info. Still, I've found the buzzer useful. My problem is my Pixhawk is mounted under a protective platform which blocks clear view of the case LEDs and I don't really want to add the remote…"
Sep 17

Profile Information

Please tell us a bit about your UAV interest
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…

Continue

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.…

Continue

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

You need to be a member of DIY Drones to add comments!

Join DIY Drones

 
 
 

© 2014   Created by Chris Anderson.

Badges  |  Report an Issue  |  Terms of Service