aerial, photography

New toy: Micro Hexa Multirotor

Just finished my Micro Hexa. Small, not deadly like the big monsters and lifts GoPro and FPV equipment.

Spec:

Frame: BlueSky RC Micro Hexa

M1822 Motors from Leadershobby (I decided to give them a try. $3.45 is kind of cheap…)

Alternative motors that might work:
Heavier, more expensive, more powerful and high quality: Roxy 2216

Heavier and more powerful but cheaper than the Roxys: Turnigy from HK

Or these on 2S batteries: smaller Turnigy from HK

5x3x3 GWS or gemfan props

10A HobbyKing ESCs flashed with SimonK

Dji Naza FC for now. But I also have OPCC, FF and others.

Turnigy Nano 1300 3S batteries

5A BEC to power the GoPro

FrSky and Futaba 9C

Total Weight: 577 g (645 when I add my FPV equipment)

Rough price estimate:
6 x Motors: $60,-
6 x ESC: $48,-
Frame: $25,-
Cables and connectors: $10,-
Tot: $143,-

Then you need a flight controller. I’m using the rather expensive $240,- Naza. But will fly fine with a much cheaper FC. A rabbit for $90, a Naze32 for $75,- or even a KK for $15,-

Flies 5 minutes on a 1300 mah Turnigy Nano and 8 minutes when I tested it on a 2200 (both tests with the GoPro on board). Will probably get 10 minutes of FPV sight seeing if I remove the GoPro.

The motor mounts didn’t fit, so I had to drill new holes.

And I hate prop savers so I modified the motors to accept collets. The shaft on the motor is 2mm. I simply removed the built in prop saver using brute force…

After balancing the cheap motors and the props I have nice and smooth video and no jello.

Here’s 10 minutes of different clips from my first tests. Raw footage dissolved together. All flying done line of sight:

Media

Best videogame ever

Did a quick test during easter. Mounted my FPV equipment on a 1/10-scale RC car and had some fun. Lots of fun!

This was roughly what I saw in the goggles. (No, not that quality, this is a HD recording from the GoPro on the car.)

FPV what?

FPV is “first person view”. The art of mounting a camera and a video transmitter on remote controlled equipment. Then you sit down with some video goggles and the remote control. And drive the car based on the video feed. It gives you an amazing feeling of sitting inside the vehicle you are controlling. Like a video game. But in real life.

Fun when controlling RC planes and helicopters. But also fun (and much safer) when controlling RC cars!

Equipment:

Camera, Goggles, Transmitter, and OSD

aerial, Media, photography

How to get rid of vibrations in your multi rotor helicopter

If you want to snap images or record video from your quadcopter it needs to be as vibration free as possible. When you manage that you get shots like these:

But when you start googling you get the same answer all over:

1. Balance your propellers
2. Balance your motors

But I did that:

And I still had vibrations, blurry stills and jelly-looking video. After a lot of trial and error found the solution.

It doesn’t matter how much you balance your props if they’re the wrong props. You need high quality very stiff props for aerial photography (AP). So, on the same quad, with perfectly balanced props I had lots of vibrations with one set of props and no vibrations with another.

I have had best results with Gaui props and Graupner E-props.

In addition to this I made a dampening system. First I tried to mount the camera directly on a small plate that was mounted on the quad with rubber dampers. That din’t work very well:

(Dampers = red)

Then I made a long extra board under the quad. Mounted it to the quad using four rubber dampeners and mounted both the camera and the battery on that one. Wow! No vibrations with any of my cameras!

(Dampers = red)

Update:
And this is how video looks like if you don’t limit the vibrations.

aerial, photography

X468 Traveller quad

Just finished my build. It flies like it’s on rails. With plenty of power. And it’s silent and nearly vibration free.

It folds in the best possible way so that it is easy to carry in a bag or suitcase.

I’ll post videos later.

Update:
A video and a story about how I got rid of vibrations.

It carries my GoPro with clear jello-free images. But I still need to do some work on the smallest vibrations if I want to film with my Canon S100.

Frame:
X468 Traveller Quad

Motors:
T-Motors 2216 900KV

ESC:
Turnigy Plush 25A

Flight Controllers:
Dji Naza
OpenPilot CopterControl
(Testing both)

Power Distribution:
100A from GLB

Arms:
250 mm carbon from GLB

Motor mounts:
Alu from GLB

Props:
Graupner 9×5 and Gaui 8×4.5

Mounting of the round arms done with parts of a square alu rod from GLB.

Landing gear is made of parts from Kites and fun things.
4 – APA Type “B” Leading Edge Connectors
60″ .25″ fiberglass or carbon tube
6 – Stand off holders – Size Medium

Radio:
Futaba 8U running FrSky 2.4 GHz

aerial, photography

Quadcopter in the Gustav Vigeland Sculpture Park

I’ve installed a CopterControl board from OpenPilot in my home brew Quadcopter.

It’s pretty impressive stuff.

The camera is a 808 HD. And the build log is in Norwegian: Part 1 and Part 2. Here is the Google Translate version: Part 1 Google Translate and Part 2 Google Translate.


Link to video on YouTube.

Now I just need to buy a GoPro HD Hero 2. I’ve already ordered a stabilizing mount.

Cost and flight time

$200,- for the quad (frame, motors, speed controllers etc)
$100,- for the Copter Control Board
$25,- for a 2500 mAh battery giving 10 minutes for flight time
$70,- for a second hand Futaba 8U radio

Build time: approx 10 hours

Time spent learning how this stuff works, learning to fly, waiting for parts from china: don’t know…