Tom Mahood
  • Irvine, CA
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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

Not getting correct kmz files created after update of MP and 3.1 rc-7

Started this discussion. Last reply by Tom Mahood Dec 12, 2013. 2 Replies

I updated both a quad and a tricopter to 3.1 rc-7 and it appears the kmz files for the logged flights are not being written correctly. Both craft had been running 3.0.1 and creating the kmz files…Continue

Why is 3.1 rc-7 not creating KMZ files correctly?

Started Dec 12, 2013 0 Replies

I updated both a quad and a tricopter to 3.1 rc-7 and it appears they are not writing the kmz files for the logged flights correctly. Both craft had been running 3.0.1 and creating the kmz files just…Continue

 

Tom Mahood's Page

Latest Activity

thomas Butler replied to Tom Mahood's discussion 3DR Power Module not very accurate - What should I expect?
"Since the failsafe works on present voltage, it will always be on the high side.  I set mine at a no-load voltage of 3.2 volts per cell.  Never want to be at the fringe of the failure point of the cell. Use a voltage monitor with LED…"
yesterday
Søren Kuula replied to Tom Mahood's discussion 3DR Power Module not very accurate - What should I expect?
"Randy, Randy, why would Vcc sag under loading of the battery? Vcc is after the voltage regulator in the power module or the BEC, whichever the user chose. If BEC is used for APM power and there is lots of servo activity, thats a different story (BTW…"
yesterday
Tom Mahood commented on Rai's blog post Tricopters and Flying Wings for Forest and Island Mapping in Borneo
"That's a very impressive flight time carrying such a relatively heavy camera. Could you mention a little about what sort of components you used in your design? Also, I don't see any FPV gear. Are you doing all your flying…"
Thursday
Tom Mahood commented on Oliver's blog post Drone flyby reveals ancient village buried in New Mexico
"Here's a link to the full journal article. It has a lot more info on the project, and more of interest to us, the flying and imaging hardware."
Apr 13
Tom Mahood replied to Tom Mahood's discussion Any good GPS cameras lighter than a Canon SX230 HS?
"I use the KAP UAV Exposure Control Script after trying a few others. I start it off just prior to a flight, and am not concerned about triggering at a specific location. With the SX230 I get a high quality image every three seconds. Memory…"
Apr 11
Charosenz replied to Tom Mahood's discussion Any good GPS cameras lighter than a Canon SX230 HS?
"Tom, Good question.  I am thinking of getting in to AP and if you don't mind, I was curious to know when you use this camera with chdk does this also require an IR light to trigger the photo?  I hope that is not too off topic, if…"
Apr 10
Tom Mahood replied to Tom Mahood's discussion Any good GPS cameras lighter than a Canon SX230 HS?
"I came to the SX230 from a much lighter Canon without GPS, so that's my point of reference. But after looking around it may well be that the SX230 and its more recent version are the lightest show in town."
Apr 7
Gerard Toonstra replied to Tom Mahood's discussion Any good GPS cameras lighter than a Canon SX230 HS?
"I'm a bit confused, I always thought this camera is one of the smallest and lightest around of a very decent quality. I'm upgrading to a 260HS now though. The only thing that could improve on that camera is a CCD perhaps. 260HS has GPS."
Apr 7
Tom Mahood replied to Eddie Anderson's discussion I had a fly-away today.
"Why would you not trust the barometer? It recorded what you actually saw. It's the accelerometers that are lying. And that's almost always a vibration issue. The first thing you should do is enable IMU logging and do a flight to record…"
Apr 7
Tom Mahood posted a discussion

Any good GPS cameras lighter than a Canon SX230 HS?

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 flight time over other, lighter, non-GPS cameras. I'd like longer flight times, but rather than messing around with the copters, I thought maybe upgrading to a lighter camera would be easier and/or more cost effective. The SX230 HS is a bit dated, and maybe there's something better/lighter.So....Any…See More
Apr 7
Tom Mahood replied to Eddie Anderson's discussion I had a fly-away today.
"Rather than counting CTUNs, you should just be looking at the GPS time. The time entries are in milliseconds. Just look for the nearest GPS entry to the point your are interested in, then do the same for the ending point. In this case I see a GPS…"
Apr 6
Tom Mahood replied to Eddie Anderson's discussion I had a fly-away today.
"What Andre said. Below is a plot of your BaroAlt against your RelAlt. In a well set up aircraft the lines should match. Yours don't, and they don't by a lot. This is almost always caused by vibration and comparing these two values is an…"
Apr 6
Tom Mahood commented on Chris Anderson's blog post Great demo of drone mapping using Mapbox and Pix4D with a 3D Robotics Aero
"Gary, are you using the $180 version of Agrisoft, and if so, do you think it's adequate for users wanting to do casual imaging and mapping? It's a rather big jump up in cost to their next level of software."
Apr 5
Tom Mahood replied to Erik Born's discussion Unexpected Motor Throttle Up Immediatly After Battery Connection
"I'll jump in again but this level of oddness is above my pay grade. The first few lines of the log said the APM though it was in a Simple mode and it was seeing a throttle in of about 55%. The Simple mode was even giving it a heading.…"
Apr 1
Tom Mahood replied to Erik Born's discussion Unexpected Motor Throttle Up Immediatly After Battery Connection
"I'm as about as far from an expert as you can get with something like this, but your log was interesting. We're you running Simple Mode? It seems to think you were and wanted to head off at a heading of 33.6 degrees. The first recorded…"
Mar 31
Tom Mahood replied to Samuel Arnold's discussion Copter crashed! I need help to find out why
"You are absolutely right about the throttle in Loiter. Not sure why I didn't notice that. I suppose it's because I almost never put my throttle in AltHold or Loiter to zero. I did that once and without thinking switched it back to…"
Mar 30

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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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