Category Archives: Multirotors

First flights of the new APM copter V2

There is still a lot of tuning to be done. In the video I fly with propellers that are a little to small (10 inch), this results in sluggish yaw behavior. The 13 inch propellers in the images where to large, they caused the copter to be a little unstable and fly strange due to the low RPM. Currently the camera is hard-mounted, but this copter will carry a gimbal when it is complete. I do have problems with “altitude hold mode” on the APM. Maybe this is because I fly with wrong sized propellers, or there is wind blowing on the sensor.

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Bulding a new APM quadcopter

I am building a new quadcopter frame for my Ardupilot. Hopefully the frame will be lighter and a lot more agile. I went with a more traditional frame-design this time as you can see in the images. This quad will use the same motors and ESCs as my previus APM quad. The GoPro gimbal will be mounted underneath the main plate, and it will be easily detachable if I want to fly without a camera. There will also be possible to attach other things such as a hard-mounted camera or an FPV-module.

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FPV Quadcopter Racing Simulator version 2

Version 2 of my FPV Quadcopter Racing Simulator adds soundeffects. I have also placed a number of gates around the world to fly trough, and added more trees and grass and flowers to make the world more interesting. In this video I fly using an xbox360 controller, but it should work with any controller, including real “RC simulator transmitters”.

Download version 2 here and try it for yourself (requires decent gaming grade graphics card): FPV racing quadcopter simulator download page

FPV Quadcopter Racing Simulator

I wanted to do a small project in the Unity 5 game engine to learn some of the basics. This it what I came up with after around 10 hours of work.

It is a simple FPV quadcopter racing simulator. You control a small and agile quadcopter using the analog joysticks on a game-controller. A real RC simulator transmitter can also be used. It is possible to fly both in first person or in third person. There are not many quadcopter simulators or games out there, maybe it would be interesting to add more features and make this a more like a complete game/racing experience?

Download here: http://quadsim.brinkeby.se/

Testing new gimbal on the APM quadcopter

I have always had some problems with vibrations on my APM quadcopter. This is because my homebuilt gimbal was not sturdy enough. This is an attempt to make it better.

My new gimbal that I have built has a ball bearing on the opposite side of the tile motor, making the entire construction more sturdy. I have also built this one out of thicker plywood to prevent the wood from flexing as mush. As can be seen in the video, the results are pretty good, but there are some vibrations when a fly fast forward. Maybe this is because I still have the roll motor mounted the the fuselage using an old 3 mm plywood that can bend slightly. At the end of the video, there is a crash. While I rapier the quad I will try the make the gimbal even better.

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