Recent content by Carl Friis-Hansen

I live in Sweden, where it is cold at winter time, thus having a diesel heater in the car (Land-Rover). For this reason I have an extra 90Ah 12V battery, which can be charges from a mains outlet or from the engine's generator. Additionally I have an inverter giving pure sine wave. This makes it...

John, nice motives. Maybe work on soft movements. In the DJI-go application you could maybe consider reducing the sensitivity of the controls, if it is difficult to do the slow and soft movements. Some people insist on flying in Attitude mode, when filming, in order to ovoid abrupt movements...

Not sure what question you ask specifically. However, isn't the problem that some of the images are exposed differently from the rest? Personally I would use manual exposure setting. I have used OpenDroneMap a few times, which to my knowledge does some moderation of the exposure. Maybe you could...

Not sure what exactly rough entail in this case. They should not feel like any metallic friction. However, the magnetic poles can be felt when you turn the propellers by hand, and turning them fast, will give a humming noise. Just make sure that neither motors, nor propellers have any play, all...

What about the 100Wh capacity rule? Does that still apply?

Hi Clinton, you can buy a hand held device for about $700, which will give you cm precision after a certain amount of minutes. Drawback is that you will have to wait for those minutes at each of your GCPs. There is, as far as I know, only one company making them. When I find my notes about the...

Hi 401 Feet, I was anxious to help, but had just been speaking to a bad customer, really sorry for my hard tone. Regarding the raw DNG images. They may or may not be on your SD card. It depends of your settings in the DJI Go application. The DNG format is not a must, in particular not if your...

Dear "401 Feet", most of us are glad to help, but your entries approaches trolling. I asked you for an original image and you gave me down scaled image with no EXIF data, thus I have no idea how the photo is taken and no way of giving you any tips. May I suggest that you read some articles about...

Nice pictures ... but: They all seem not very sharp, I am convinced MP can normally do better. Do you remember to focus? Do you use a reasonable shutter speed? I put your middle photo into DarkTable and what caught my eye was the histogram. I normally spread it out, so the whole dynamic range is...

I think Airmap may mature to be a very useful tool for advisory and authorization. Personally I would not use it to fly with, unless it became a well tested and common program to use with the DJI birds. In addition I think it is best to use a pad with only the necessary applications installed. I...

Not sure if you can get the hobbyists to follow the rules, no matter what rules there are. A couple of days ago in Sweden, a presumed hobbyist hovered for a long time over a huge dense crowd at an exhibition gathering. Some people got scared and attempted to move out of the risk zone, although...

Please see Expanded Government Authority to Destroy Drones Expected As Part of Routine FAA Bill for details. My question is: Is this a bad thing? Is something worth publishing counter arguments against, or is it reasonable for law and order?

Would drones powered by combustion engines be a better option, than those driven solely by batteries? The energy density for petrol/gasoline is so much better than even the best batteries. Small battery small gas-generator and you can fly with more capacity pesticides for a much linger time. I...