Joshua Ott's Blog (67)

Crash test

Well I feel better now. I'm always a little nervous to fly a new ship until the first crash. You never know how she'll deal with adversity. 

I was flying FPV in loiter at ~15m when it suddenly pulled hard right and back making a nice arc into the ground at about 20kph according to the telemetry log. The current jumped from the ~30A normal to over 60A in the…


Added by Joshua Ott on January 18, 2013 at 1:00am — 40 Comments

Failure is an option

It's raining robots-

That will be the headline all of us will cringe at, when the Media goes manic over the first commercial drone crashes of any significance. The same way they do anytime something new takes a stumble (or two).

The thought of my craft hitting somebody really haunts my mind. I'm sorry to be a downer, this topic is definitely a buzz-kill…


Added by Joshua Ott on January 7, 2013 at 7:30pm — 29 Comments

Easy disconnect motor power

One handed plug removal, simple labeling in case the copter ends up on the ground and I'm not the first one there.

10cm of…


Added by Joshua Ott on December 31, 2012 at 4:30pm — 16 Comments

Rough draft- Clear view, roll/tilt, waterproof GoPro gimbal

I've had this idea in my head for some time now, finally got serious about sketching it out.

Yes, I know that all the props are pushers ; ) I couldn't find the tractors and wanted to get some pics up anyway. First flights will all be with…


Added by Joshua Ott on December 31, 2012 at 2:00am — 87 Comments

Boundary layer turbine (Tesla turbine) propulsion

One of the major weak spots with multi-rotors is the exposed propeller blades, they break and they hurt things.

I know people have designed guards and experimented with ducted fans, but has anyone done work with a boundary layer turbine arrangement? I've been kicking this idea around in the back of my head for some time now and just recently saw a ceiling fan…


Added by Joshua Ott on November 15, 2012 at 10:30pm — 21 Comments

Low profile 2.5mm AV plug

Here are the last steps in constructing an AV plug that will fit inside the GoPro waterproof housing-

All the parts are cut down to leave room for the soldered connections, don't cut them too short or the plug will be weak and floppy. The plastic insulation has NO heat tolerance at all! be very careful if you…


Added by Joshua Ott on November 14, 2012 at 1:30am — 14 Comments

GoPro low-pro 2.5mm AV plug

Here are a couple of images that show a hacked 2.5mm 4-pole AV plug cut down to its smallest possible form.

 I converted this to…


Added by Joshua Ott on October 24, 2012 at 10:30pm — 9 Comments

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