Recent content by JohnHan

http://phys.org/news/2015-12-drone-icebreaker-treacherous-antarctic.html How do you calibrate the compass on a steel ship? You don't.

Somewhere in the past month I read an interview with Eric Cheng formerly DJI. The question was whether any of the current crop of "drone" mfrs. would successfully challenge DJI. Eric said the advantage DJI has, is that they go from "concept" to manufactured product very rapidly. They iterate...

I sure hope Google maps doesn't show Apple's property.

Sure looks more sturdy to me. The new one is purpose built to be a QR type system. The old QR system was built to be "adapted" to an existing screw-on design that was already out in the wild. The thicker center lug and thicker/taller outer lugs look like they would stand up to more twisting than...

The US Open guy was a teacher at a tech high school and this guy is a law student. 25 and 24 years old respectively. Age is probably irrelevant though. I think the driving motivation if I can guess is notoriety. The same mentality usually manifests with many people after about 6-12 ounces of...

So are you saying the individual involved is going to be treated more harshly than he deserves or less harshly... based on this "dumb *****"? I think you are saying more harshly.

When you think you have seen the worst of it, a bigger idiot materializes. Let's make a list of the things he should have known: 1. I'm a teacher I should set an example 2. I'm a technologist I should have known how fragile these systems are and realized the probability of failure. 3. I'm just...

As for the batteries my recommendation is, if you're not in a hurry, buy one TB48 and compare its behavior with the included TB47. This will give you a real world comparison in actual flying conditions. The larger capacity battery weighs more so there is no free ride. All else being equal a...

Here is what FAA says: Unmanned Aircraft Systems (UAS) Frequently Asked Questions Which governs the airspace over my property – FAA regulations or local/state laws about unmanned aircraft systems (UAS)? Under 49 United States Code 40103, the United States Government has exclusive sovereignty...

There are not enough of 'us' to combat an uninformed, publicity seeking legislature and a willfully ignorant public.

I have used an iPad Air and now a Mini 2. I prefer the Mini. Controller is more manageable.

Along the way yes some of the stories cause "worry". But, by monitoring this forum I'm better equipped to address the risks that are in my control while taking steps to minimize risk to people and property from the possible scenarios outside of my control. Better for me if I know what is and...

After firmware update to 1.3.0 I took it out for a test flight. Right after liftoff and a brief hover I rolled right and rolled left and I could see the horizon level out during the beginning of the roll left. Flew three batteries and was mostly pleased with horizon level say, 90% of the time...

It is common belief around here to only start a flight with a battery that is 100% and has recently come off the charger. My definition of recently is 2 or 3 days. For the reasons that you experienced first hand. I have done my own experiments (indoors not risking the craft) and am a true...

In my opinion it's a no-brainer that yes, you should buy a "learner" quad. This way you can become proficient without constantly fretting over balling up a $3k quad. On one hand you should get a cheap phantom, on the other the P3 shares some similarities with I1 so it could also be good. I'd get...