DIY: Stigerns Homebuilt H-Quadcopter

Category : RC

After some inspiration from fpv.no I decided to build my own H frame quadcopter.

It’s a very simple yet stable design, and makes a perfect FPV quad. The H quad gets a much larger “center” than most other types, which makes it spacious! You can fit almost anything onto it, well you’re only concern is the weight.

So I started off by drawing a simple 3D model of what I was looking for. I used 3dsmax, but for a quick model Sketchup is great. I’m jus more used to 3dsmax.

I bought some 18mm tick pinewood plates which I cut out cylinders in 20x18x800 mm sizes, then cut them down to their correct length.

To make em stick together I used some small wood-screws and polyurethane wood glue between the joints. Making it surprisingly sturdy and stiff!

For soldering it all together I used a power distribution board, placed underneath the plastic box. For battery connections I use two XT60 plugs, one in front and one in back, to keep the quad in balance. Alternatively you could make room for the battery under the plastic box, making it possible to only fly with one large battery.

The end result looking like this! Total quad weight without battery: 1045 g

Parts list:

4x XXD A2212 KV1000 Brushless Motor
10×4.5 SF Props (comes in pack of four)
HobbyWing 20A ESC (found at eBay, RCtimer.com also has some nice ESCs)
Hobbyking Multi-Rotor Power Distribution Board
Hobbyking KK2.0 Multi-rotor LCD Flight Control Board
A 3S lipo of your choosing, I recommend 2x 3000 mah.
Nylon XT60 Connector for battery. 
2x PolyMax 3.5mm Gold Connectors

Other parts:
Receiver of your choice, I use a Turnigy 9x with the 9x receiver.
LED’s? I bought the Turnigy LED’s from Hobbyking.
Feet? I used some tube-isolation foam.
Screws & Glue
Wood, pine or other equivalent.
Zip-ties.

X525 V3 ARF from Goodluckbuy

Category : Electronics, RC

I just took the next step and ordered a real quadcopter, it is a ARF kit thats based on the x525 frame. The contents of the kit looks okay, and I guess for a first time build it’s just a good thing most parts already has been selected for me.

Kit Contents:

– X525 V3 folding frame*1
– KKMulticopter v5.5 *1
– XXD 2212 KV1000 brushless motor*4
– 3.17mm Shaft adapter*4
– GEMFAN Carbon Nylon 90×50″ 9050 9050R CW CCW Propeller *4
– Hobbywing 20A ESC*4
– ESC Connect Board*1
– Heat shink tube*12
– Not assembled,just a kit

I will most likely not be using the KKMulticopter 5.5 board, instead I have a KK2 from Hobbyking on it’s way. It looks much easier for a newbie to understand and setup. As some extras to the kit I also got a few extra props, one screw set, prop savers. I also ordered one extra frame kit!

The receiver I’m gonna use is the Turnigy 9x, and for powering this quad I will be using the lipos listed under here. Of course I will not use both at the same time, but I thought I’d give it a shot with different C ratings and mAh:

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=18207

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=26453

I’ll try to update this blog with a build log.

 

Review: Mini Pet Quad 4CH 6-Axis

Category : RC

I have now flown this quad for some time, and it is about time to write a review about it. So here goes!

First some technical data:

Size: 8.5 x 8.5 cm
Flight time: 6-8 minutes (depends on lipo and flight style)
Charge time: Approximated 60 minutes (from my experience it’s a bit shorter)
Radio range: Over 40 meters
Quad-copter weight: 34g
Quad-copter battery: 3.7V 300mAh Li-Po battery
Gyro: 6-Axis

RTF Package contains:

Quadcopter
Transmitter
Charger & 1 Lipo
Spare set of props

The quadcopter itself is quite well built, the build quality is much better than the WL-Toys quads. It got some nice rubber buttons at the bottom of each feet, which keeps it in place when landed. I don’t know if it’s any good as a impact reducer, they aren’t that soft. The booms to the motors are made of aluminium, so they feels very solid. I’ve had my crashes with this one, and it’s not showing. Only visual damages are that the props have a few scratches.

The quad flies great! It’s a blast to fly indoors because of the gyro, it’s the most stable quadcopter I have flown. Having that said, it’s the opposite when turning outside for flying. Because of it’s eager gyro the quad wants to counter every little puff of wind. So if you want a mini quad for outdoor use, you might want to look at the v939.

The flipping function isn’t as good as the wl-toys, you need to flip a switch on the transmitter to make it go from “Beginner” to “Advanced”, when this is activated the quadcopter will do flips if you push the direction stick forward or backwards, resulting in a flip in that direction.

The only drawback is that you can’t fine select sensitivity as on the wl-toys tx, there are only those two modes.

One great feature is that the wires to each motor uses a small connector on the board, compared to the first v929 model this makes replacing a motor simpler.

The transmitter is decent enough, the only thing it lacks compared to the other models in its price class is the back light.

Pros & Cons:

+ 6-Axis Gyro (great for beginners, keeps it very stable)
+ Well built
+  Great indoors

– 6-Axis Gyro (makes it unstable in windy conditions)
– Only two modes
– Comes with only one lipo

WL-Toys v929 & 808 #16 v2 Camera

Category : RC

I’ve had my v929 quadcopter for a couple of days now, and starting to get a hang of it. So I would like to share some vidoes I took with my 808 camera mounted ontop of it’s canopy.

First video is from my parking lot:

This video is from a park close to my house:

 

 

 

RC Season 2012 – New Toys!

Category : RC

It’s been some time since my last blog about rc helicopters, so it’s time for a new. There haven’t been any changes for about 2-3 years, still got my Lama v3, Honey Bee FP2 & Walkera 5#6. Only one of them are in working condition, only the 5#6 can fly. My lama has a broken TX, and my FP2 misses some crystals(where did they go?).

So, I went back to RCGroups to check out the news on the rc front. And to my suprize quadcopters had really dropped in price! Walkera has some new neat models, the ladybug for example. They still cost, but not as much as those custom built ones. Of course you get what you pay for to some extent.

But I found a thread on the forums discussing about a new brand named WLToys, and their Blade MQx clone the V929. It has recieved very positive response, and many good reviews. Presumably it’s very easy to fly, flies well and stable it can also take a beat. The main argument for getting it is the price which is around 40-50$!

The V929 is my entry into the quadcopter universe, I just ordered one from eBay 47$ including shipping!

Now for some tech specs.

WL Toys V929

Main Wing Diameter: 13.5cm
V929 BodyWeight: 61g
FlightTime: about 10 minutes
Charging Time: 50 minutes
Range: 100-150 meters
Power Supply: 3.7 V 500mAh Lipo Battery

As a replacement for my FP2 I found another helicopter from WLToys the V911:

More about this model later!