Freitag, 14. November 2014

DRQ250 uncut & commented - Mini Quadcopter in a park on late summer morning

For this flight I had my little quad with me on a lovely trip in the mountain region between lower austria and styria. This is in Schwarzau. It's a little wildlife park/nature conservation, and this was in the morning with great light.
The flight turned out so well that I thought back than: "I could try uploading this uncut".

Thanks for watching, leave a comment and tell me what you thought about it (uncut?) and if you would have preferred music instead of just motor sound and commentary. I tried some songs but most of them get blocked these days...

Freitag, 31. Oktober 2014

Region Semmering-Rax - Abgehoben

Dies ist ein Beitrag für den Kurzfilm-Wettbewerb in unserer Heimat-Region (Semmering-Rax). Hier habe ich versucht die schönsten Szenen "meiner" Region in 3 Minuten unter zu bringen. Das UNESCO-Weltkulturerbe - die "Semmering-Bahn" war die erste normalspurige Gebirgsbahn Europas und gibt ein wunderbares Motiv ab.

This is my contribution to a local short film contest. It's about our region here and the theme is the historic railway track in the "Semmering" region. It features shots from the last 2-3 years.
If you're really interested in the locations I can later do a video index - or just ask me in the comments.

Freitag, 24. Oktober 2014

Which one is better? ImmersionRC Duo5800 vs Black Pearl Video Diversity receiver comparison

In this comparison video I wanted to find out if the Black Pearl (all in one - Display with diversityRX) is compareable to the dedicated ImmersionRC Duo5800 receiver. On paper they both have 90dbi sensitivity. See in the second part how they look in comparison. For my test setup I seperated video TX and RX with a few thick walls at home.
Also I measured all my antennas with the ImmersionRC RF Powermeter. You see the values at 2:24.
The normal ones were affected by alignment (horz vs vert) and the SPW ones were "immune" to different alignment - as expected. The directional antennas had great antenna-gain in the cone and somewhat less optimal outside of it.
Btw. you can also measure the mW of your video TX. You plug a 30dB attenuator in between and set it in the powermeter. Great to measure the advertised milliwats vs the real output!
Sorry for this not being super scientific but it gives you an idea of the image quality.
EQUIPMENT as seen in the video: Antennas
5.8 SPW Antenna    5.8 Helical Antenna
...more in my "Hangar"
►in case you wanna buy RCSchim a beer Thanks!!! ;-)

Freitag, 17. Oktober 2014

Scary and fast Quadcopter DIVE (video cut off), Proximity Flights (Trincopter, KK2, Powerquad)

I have this "Powerquad" (aka TrinCopter) that is heavy but overpowered and fitted with 5000mah 4cell. I know now that it uses around 29amps at hover and 60amps on full throttle! That means you don't fly long with it - but fast. Long enough to reach out for some mountains ;-)  (7+mins)
I wanted to dive down the "Mittagsstein" again. I already visited this, best quality video there so far would be the 2nd part of this -> VIDEO
Again I've been very nervous while flying close to those rocks so far up there and rushed down, a bit too far on the wrong side of the mountain and got behind some trees and got terrible video (and that with 120km downhill diving!).
After this I switched KK2 flightcontrol to Naza Lite + GPS - so I would have return home on emergencies. It may now be harder to get decent diving with Naza - but more security (and maybe lower pulse for me).

The other flights were a bit further in the woodlands - nice proximity there. And also the Ruins of Klamm (visited them often) were great to fly at. Last Vid shows my attempt to fly up to a very high mountain to film the huge terrestrial TV antennas up there (hiked up before and did some measurements = OK). But it was too high, I was too chicken - gave up around 80% of the distance. Liked how the cheap Gopro3 lookalike "Hawkeye" cam performed here (it was a hazy day!).

Freitag, 10. Oktober 2014

DIY Goggles - The Facebox - great and cheap FPV Goggles (alternative to Fatshark Dominator HD)

From the comments on my Fatshark Dominator HD review I see that this is a hot topic. So many questions about alternatives to the expensive and hard to get DomHDs.
One really good one is also the cheapes one with extra large picture, good quality and good comfort. I saw these first on a FPV meet (Poolnoodle Challenge) and was amazed by the clear and huge display. Pricing is around 100$, buildtime maybe 1-2h - but really easy!
If you have some questions, comments - don't hesitate! Good luck with the build and have fun!
Check out my blog post here for more details and all the pictures (which are also in the video at the end).
Short shopping-list:
1. Frame (styrofoam) from UK
2. 5" TFT display from Dealextreme
3. better fresnel lens (optional)

Video Index:
0:11 Intro
3:10 Impressions, take a look thru the goggles!
4:35 horizontal Interalced "issue"
5:25 Lag?
5:44 Fatshark DomHD vs DIY Goggles
8:20 Difference between DomHD and DIY Goggles
9:25 Price, Buildtips
10:07 Strap mount Tip!
12:00 Bluescreen?
15:27 Answer: Monitor or Goggles for beginners?
19:09 Buildpics (Pics also available on picasa)

►►Update: just before publishing this vid I did a 2nd testflight with the MiniQuad. The picture is really big, great to fly BUT: the blackscreen issue can be tricky/scary. So not sure yet if I'd trust this goggles for an expensive, bigger, unstabilized platform. So if you have some other safety features (second monitor for emergencies) it's ok.
Hover recommended routing it throug a DVR - this might eliminate the black/bluescreen. Or optimal: search for a similar size display without bluescreen.

Montag, 6. Oktober 2014

Freitag, 3. Oktober 2014

Flight over riverbed, under bridge, beautiful fields of gold - Black Snapper

Mit dem Black Snapper einem trockenen Flußlauf folgen - mit Gimbal und Gopro3 - hat mir sehr gut gefallen dort! Zum Abschluß dann noch ein paar mal unter den Autobahnbrücken durch. Danach bei tollem Abendlicht die Felder entlang gleiten und dann noch Radfahrer ein Stück begleiten (in Filmreifer Kamerafahrt - hab ich zumindest probiert).
Und das alles passt super zu dem Musikstück von Kevin McLeod hier! Diesmal wurde zuerst die Musik auf die Zeitleiste gelegt und dann die Videoszenen dazu arrangiert - so ist's viel einfacher!

Flying with my Black Snapper (Brushless Gimbal, Gopro3) far along a dry (almost) riverbed and finally under 2 highway-bridges. And smoothly floating over evening fields with great sunlight, following bicycles in cinema-like cam-movement (at least I tried ;-)
Perfectly fitting to McLeods orchestral sound here! I'm really happy if I find royalty free music that fits so well to my video footage.
In fact here I first moved the sound on the timeline and composed video scenes to it - so much easier this way. ENJOY!

Freitag, 26. September 2014

Black Snapper - smooth flight in the mountains and low over a river

I still have many nice flights recorded before I lost this quad in a crash. First I wanted to throw all these wonderful flights into one best of - but there is so much eyecandy I couldn't cut it so short to fit all in one vid.
So there's more like this to come in the next weeks and month (and this will helps us through the cold and unflyable time.

If you plan to get a decent, foldable copter check this out. They made a 2014 version with some improvments (longer arms, ZenmuseH3 ready, more space)
If you're uncertain about motor setup: I just finished a repaired snapper for a friend and went with the Tiger 4006er and 12x5 Aeronaut props - very quiet, smooth and 11,5mins on 4cell 5000mah - only 3046mah used!

Dienstag, 16. September 2014

FPV Cam review: Runcam Sky and PZ0420H - setup tips, image comparison, DVR footage

I got these two cams and first I thought with this pricetag it wouldn't be useable on a miniquad because image and lighthandling must be "cheap". But 3 flights with the mini in difficult lighting convinced me. So definitivly a recommendation!
I would prefer the silver one - not really sure about the plastic. The pz0420h has infrared filter as accessory - maybe that and black as preference for anyone?
Weight about the same, air drag with silver is less, image quality should be a bit better with silver.
SKY (silver one with 650TVL)
PZ0420H (black plastic, 600TVL)

Samstag, 6. September 2014

Fatshark Dominator HD Review

Update: beim Video unten kann man jetzt deutsche Untertitel einschalten!

I was one of the lucky FPVers that got his hands one the first few Dominator HD goggles that were shipped - so I hurried to review it you. First tests were a bit dissapointing. I compared them against RCV922 and AttitudeSD.
RCV922 has 46° fov and funny: it's sharp without diopter for me (I'm short sighted). AttiSD require diopters for me.
Initially I didn't use diopter glasses and thought the DomHD are no way as sharp as the 5 year old rcv922 ;-)
After putting on the diopter lenses now (the ones from AttiSD fit) - the picture is really good!
Most notably you get blown away by the color quality. Also you get less barrel distortion. These optics sure were hard to design! - See more at:

FOV - screensize
For me it was always the most important factor to really get immersed with FPV - big screen! The RCV922 were great regarding this - but you couldnt read OSD info in the edges...
AttiSD were better for OSD - but not so good immersive feeling.
DomHD now delivers both - quite sharp on the edges and huge screen. On the last FPV meet I tried many different models (AIO, Skyzone, Cinemizer). Most of them have around 30° fov - way to little for my taste!

Wearing comfort:
I always preferred the foam from rcv922 over the rubber eyecaps. So old ones are nicer to wear for me.
With AttiSD and now DomHD I get ugly eyerings with fpv sessions ;-)

IPD adjustment:
is fine for me - almost sharp in all corners - much better than with RCV922 for sure.

Super option! I tend to fly just with 5.8 nexawave RX without groundstation. Just makes no sense flying miniquads with huge groundstation. Keep it portable here! So DVR is a good safety option if you crash. One wish: please make the DVR autorecord after powerup. May be energy waste and SD card wast - but also use cycle recording!
And: if you crash and panic and tear away your goggles you may be dumb enough to just unplug power and not stop DVR rec first. In that case the DVR recording is lost.
So we have to get used to always stop REC after crashing ;-)
Other than that: rec quality is really good, 720x480 30fps with 8mbit

First I was a bit dissapointed - but now I don't wanna use the other goggles ;-)
Diopters were needed - that was one dissapointment - and I couldnt believe the high price (650€ in germany!) - but now I learned here from Fatshark that the LCDs are making it so expensive.
Funny: altough my shop stated rx module and headtracker is OPTIONAL I got at least a headtracker module preinstalled (now with multicopters I don't really need it - but maybe I can apply it to Zenmuse tilt on my Phantom2). - See more at: