Donnerstag, 5. Juni 2014

DJI Phantom 2


My Mods:
  • wider landing gear
  • simple gopro antijello mount
  • Carbon props (better against vibration on video!)
  • installed FrSky X8R receiver to use Taranis Radio
    I wasted a whole morning trying to install EzUHF RX - only to learn that you have to use SBUS mode on the RX! That means you can only use Futaba RX or luckily a FrSky X8R I had laying around. It could be so easy: if you could alter the Transmitter mode in Assistant Software (like in "normal" Naza) from SBUS to PPM - you would be good to use any sum-signal outputting RX (including EzUHF for example). I hope DJI activates this setting sometimes in the Future!!!
    You could of course swap the Phantom Naza FC with a "normal" NazaV2 FC - and you would be able to use any RX here you want (but that's a pricey option!).
Weight:
1,2kg FPV ready with Gopro and Battery!
15min with Zenmuse Gimbal and Gopro3
Power consumption: 270mah/min

Phantom Assistant Software:
Install all available firmware updates...
Switch to NazaM mode instead of Phantom mode to enable some additional features!
Gains:
      Pitch Roll Yaw Vert
Basic: 120 120 100 200
 Atti: 200 200

Flyaway problems:
My conclusion - the std. radio and the internal receiver are crap. They can be tricked by interfering signals (wifi,...) quite easily! I don't know any other 2.4 radio that is so sensitive...
read here...

GPS Antenna is fragile!  /  GPS reception issues!?!
If a newbie crashes his phantom (maybe because of a flyaway) the top mounted ceramic GPS antenna might get cracks and the reception of GPS satellites can be weak or even worse can be sporadic (sats dissapear while flying - flightcontroll is confused - tries to countersteer the sudden loss of position and goes crazy?)
I have a P2 here that had a crash and now the sat fix sometimes takes forever, sometimes it's here in a few seconds. I learned that if I fly in Atti Mode first, then after landing I could get GPS fix really fast.
Ultimately: I had serious problems getting GPS fix - even with new antenna! Only after removing the (somehow torn apart) protection foil copper thing it worked for me. Maybe the foil was giving a short circuit to the GPS antenna circuitboard? No Problems since than...

Interesting Links:
German - Startvorkehrungen - was tun bei einem neuen Phantom 2
Flyaway discussions - good explanation

Broken GPS Antenna as cause for no GPS Fix (always 3 red blinks...)
Replacement GPS Antenna: found at Digikey Part: GP.1575.25.2.A.02 ANTENNA GPS PATCH 1575MHZ

more Pics:
Phantom 2

Montag, 14. April 2014

DRQ250 - MiniD Racing Quad




All up weight 580gr (with cam, fpv and 1600mah 3cell battery)
Flighttime: 7mins
Power Consumption: avg. 215mah/min    avg. 13amps  (but most of the times flown speedy!)

Cams: Mobius Wideangle and seperate FPV cam
ImmersionRC 5.8 VTX with SPW antenna fed directly from 3cell 1600mah SLS Battery

Radio: FrSky Taranis <-> 2.4ghz X8R Receiver

KK2.0  Version 1.2 (update pending - but I fly manual here it shouldnt change much...)
Gains:
Roll    Pg 65/ lim 100       Ig 37/ lim 20
Pitch  same (linked)
Yaw   Pg 60 lim 25          Ig 40 lim 10
Stick scaling all at 60


Shoppinglist:
get the Frame @ Droneframes.com

Electronics: http://myRCMart.com
Motors (they have cw and ccw nuts - so get 2 of each kind):
2 x RCX 1804 (2400KV) Brushless Motor (Anti-Clockwise) (ZMR-XPOWER-10)
2 x RCX 1804 (2400KV *R) Brushless Motor (Clockwise) (ZMR-XPOWER-16)
Hobbyking Multistar Motors? (just saw them - might be a good option)

4 x RCX 15A ESC Brushless Motor Speed Controller (SS Series / Multicopter - SimonK Firmware) (RCX07-187)
Update: Motors are not so good, Vibrations and not equal performance - so buy more to select the best maching to get good results. Or get the recommended SunnySky ones...

Props (get some spares - you'll need them!)
2 x 5x3" (3-Rotor) EPP5030 Counter Rotating Propellers (CCW / Black / 3pcs) (RCX01-124)
2 x 5x3" (3-Rotor) EPP5030 Counter Rotating Propellers (CCW / Green / 3pcs) (RCX01-127)
2 x 5x3" (3-Rotor) EPP5030 (*R) Counter Rotating Propellers (CW / Green / 3pcs) (RCX01-126)
2 x 5x3" (3-Rotor) EPP5030 (*R) Counter Rotating Propellers (CW / Black / 3pcs) (RCX01-125)
if you can fly - change to the more expensive carbon props:
4 x 5x3" EPP5030 Counter Rotating Propellers (Pair / Carbon Fiber) (RCX01-130)

Resources and Links:
buy it here: http://Droneframes.com
or here: http://efpv.co.uk
BUILDLOG from Sine @Openpilot

DRQ250 Buildlog/Pics:




Onboard CAM - Update:  I now use a second FPV cam for Downlink. Everyone does it this way - I did some tests and now I'm also convinced ;-) - see this LAG / FOV demo vid:


Donnerstag, 3. Oktober 2013

Black Snapper (Globe Flight / RC Upgrade)





Tech Specs
Black Snapper, CFK Aluplatte, Landekufen, GPS Halter klappbar, RC Einbaukit
DJI Naza V2 + DJI Iosd mini
Tmotor MT4006 -13 (92gr, 740KV, Max 24A, 250W)
ESC Maytech 30 Amp
Graupner Prop 12x6 + Distanzhüllen
GF Brushless Gimbal + Alexmos Board (FW 2.2b2)

Weight (Full FPV, Gimbal, Gopro3 but without battery): 1,8kg
Folded Size: Width: 25cm    Length: 44cm     approx 13cm height (if GPS is folded down)

Naza Gains
pitch roll yaw vert
Basic 150 150 120 130 
Atti 150 150
Important: make sure your CoG (Center of Gravity) is correct. This means you have to move batteries really far backwards! If you have an hard to control copter (especially if you "yaw" fast) your CoG maybe wrong. Look this vid to see what I mean! With 2 strings I determined the CoG: PIC
I also had problems with non straight motor alignment: PIC

Flighttime: ~14-15min  with 6600mah 4cell
I use 2x Turnigy Nanotech 35C 4S 3300mah  paralell (6600mah)
Powerconsumption:  ca. 370mah / min   the flying weight is 2,4kg!     avg. 19-21Amp

Motors: great - till now I just knew normal little motors that spin 9x5 props and high rpm...
This works but it isn't efficient. You only get around 10min flighttime max...
These motors here have long cables so that the cabling can run in the carbon tubes. This gives nice installation and less air drag under the props. This reduces vibrations!

GimbalI opted to use the Black Snapper Gimbal which comes as an option here. It is controlled by the Alex Mos board which has a good reputation. Build quality is great, Gopro3 fits in well. Motors are good and what they do looks and works like magic! You get really good cam footage - no matter how the copter rocks in the wind - the gopro is straight! I ordered my alexmos board here: buy Alexmos @Austrian Shop who sells a ready soldered board!

best Alexmos Pid Settings
(Juz70 Settings, same Gimbal Motors, different Quad)
       P   I    D   Power at 12V (fed over Balancer-plug)
Roll.  9  0,12  9   88
Pitch. 5  0,14  5   78
Roll invert, 14 Poles,     Sensordirection: Y, right: X
RC settings, PWM       Pitch: RC_Pitch
Min Angle Max Angle
Pitch -35           75           Speed Mode (LPF 4)      Speed 6

Video Guide to Alexmos - good explanation cleared things up for me!
Approx double the P value of Roll vs Pitch!
I gain defines the "speed" to compensate movements...

iOSD Mini: (Mamo-models.com)
Since I use the Gopro Liveout and my view is always straight I cant judge the position of the copter well in the air. You can tell if you "lean" forward or not... So the iOSD is great because it overlays an "artificial" horizont (a dotted line) that shows the copters angle. It also displays pitch and roll as numbers on top.
Great idea: the iOSD has access to all the sensor and GPS data directly from Naza - and doesnt have it's own sensors! This way you get very accurate data. You even see the num of sat's Naza hast, the Flying mode it's in and of course other OSD data like Speed, distance and height...
Most astounding: the home orientation help is really helpful here - rather than a little 3d arrow you get a fluid square floating over your home position (if you're looking in the right direction, otherwise you get a left or right arrow on the border - just see my video and you'll understand...)

Links and Info:
FPV Community Build log (german)
Official Manual from Globe Flight (German, not finished)
Buy this and all other FPV Stuff here Globe-Flight.de!

Buildpics


Montag, 22. Juli 2013

RD450 - KK2.0 based Quadcopter

This Quad has a nice story:
after seeing a spectacular video on which I commented I chatted a little with Trinco and he offerd to send me a pre series model of the frame he built.
Update 6/2014: I feel bad about me leaving this Quad on the workbench unfinished so long. Even better does it feel now - once it flies great and powerful. My most "grown up" Quad till now. Not hightech (simple KK2, no GPS, no OSD, no gimbal) but very potent motors and the needed power for great highspeed dive videos (I really enjoyed them last year!):

It looks quite similar to the QAV400 and it has a very high material quality!
The arms are aluminium, Plates are G10.
There is a dirty section (bottom with motors, ESC and vibrations) and a clean section - both separated with rubber bobbins. It may look scary to only place your whole quad on only four screws but this way it isolates the vibrations most effectively!

==>> Buildlog



Tech Specs:
Frame: RD450 from Trinco (nice and easy to screw togethter!)
Motors: Robbe Roxxy Bl Outrunner 2834/08
Props: Graupner eProp 9x5
ESCs: RCTimer ESC 30amp SimonK flashed
Radio: EzUHF JR Module in Taranis
Cam: TBS 69 / Gopro3BE
VTX: AvionicsRC 2.4GHz (powered directly from Balance plug of flight battery)
Weight: 1,4kg (all stuff like gopro, gelpad, but without battery) so I have a flying weight of around 2kg!

Flighttimes / energy consumption:
flying weight around 1,8kg
power consumption: 550mah / min    ~ 33amp    (on an average flight, not only hover!)
 Update: now I use SLS 5000mah 4cells and get safe 7:30mins - not much - but this air-time is awesome!

Vertical performance (measured with GPS Logger with barometric sensor):
max 50km/h VERTICAL speed!!  this really feels like a rocket seat!
Horiz.Speed is around 80-90km/h over 100km/h on fast dives...

KK-Settings:
Roll/Nick:  P Gains: 60/ Lim 100     I Gain: 30/ Lim 20
Yaw:          P 70/50    I 40/20
Stick scaling: R 50,  P 40,  Y 50,  Th.70
Min Throttle: 15 (with 10 one motor didnt spin up at the same time than the others)

I really encourage you to follow the RCGroups guide to find the right settings! RCGropus KK Settings thread

-> get the Frame here FPV-Reconn.com

Videos:

Donnerstag, 14. März 2013

F450 KK2.0 PowerQuad

3/2013: my current little Power-Quad



This is my attempt to test out 5,8Ghz Video and KK2.0 controller for a cheap multicopter.
KK2.0 board is really nice to setup.
For the "tuning" of the important PI settings your should follow the easy tips in this guide here on RCGropus

Tech Specs:
Frame: DJI Flamewheel F450   (nice and easy to screw togethter!)
Motors: NTM2826-1200/17345 NTM Prop Drive Series 28-26A 1200kv 250Watts!
Props: Graupner eProp 9x5
ESCs: Turnigy Plush 18A
Radio: Scherrer UHF Longrange (red V antenna)
Cam: Gopro2 with liveout (100ms delay - see this video)
VTX: Fatshark compatible 5,8GHz from ElectronicaRC.com (powered directly from Balance plug of flight battery)
Weight: 1015gr (all stuff like gopro and gelpad, but without battery)

my KK-Settings 14.4.2013
Roll/Nick P Gain 55 / Limit 100 I Gain 30 / Limit 20
Yaw P gain 50 / Limit 20 I gain 50 / Limit 10
height dampening 0 (Limit 30)
But I really encourage you to follow the RCGroups guide to find the right settings! RCGropus KK Settings thread

Pricetag: around 230€ maybe...
F450 DJI Flamewheel Frame: 50€
KK2 Controlboard @ Hobbyking 30$
4x 18amp Turnigy Plush ESCs 12$ each
4x motors 15$ each
2x Graupner eProps 9x5 5,4€ each
and 2x left spinning Graupners 5,4€ each

Mittwoch, 7. November 2012

FPV Wissen / Knowledge

Hier entsteht ein Sammelbeitrag mit Links zu guten FPV Infos / this will grow to a thread of usefull FPV hints and setup tipps.

MEINE AUSRÜSTUNG / MY EQUIPMENT:

Playlist with Tech-Related videos:


Videofunk / Antennen
Cloverleaf / Skew Planar Wheel Antennas
Videotipp: xJet (Newzeeland) has a great video explaining FPV Antennas!
and now Bruce (XJet/RCModellReviews) also did a great 5.8ghz Video:

FPV Antenna 101
Sircana on FPVLab.com plans a "Developing the Ultimate FPV Video Link"

Steuerung / Longrange
new 2014 ► Taranis infos:
http://fpv-community.de/showthread.php?32899-FrSky-TARANIS-Hardware-Mods
http://fpv-community.de/showthread.php?31427-OpenTX-Taranis-Programmierung-Tips-und-Tricks
Soundfiles / mod: http://openrcforums.com/forum/viewtopic.php?f=92&t=3864

►Taranis ImmersionRC ezUHF Module:
- Output Power high 500mW , low 200mW
- DC Power Input 6v -- 13v
Manual download



Scherrer Longrange UHF System connected over 35Mhz wireless to Futaba FF10
FPV - Range of 35MHz radio
in deutsch: FPV - Reichweiten von 35MHz System

Video
>> NEW: Gopro3 and Gelblock for best quality!!!
>> NEW: Gopro 1&2 Liveout Delay measurements - how much lag is ok?
GoPro anti vibration mount on tricopter
Aufnahme von analogem FPV Video - USB Grabber vs SD Recorder

Respect THE LAW - Rechtliches zu FPV in Österreich
Link zu Prop.at - hier gibts Erklärungen zur Gesetzesnovelle LFG (gültig seit 1.1.2014)
Luftfahrtgesetzt 2014 - PDF


Sonstiges / Misc.
Controlling AR Drone with Windows Laptop and Joystick / Gamepad!!
RC-Wissen - was bedeutet C bei einem Lipo


FPV Ssammelthread mit vielen Infos und How-To Videos:
RCGRoups.com - "HOW TO BE SUCCESSFUL IN FPV" - wenn das mal nicht gut klingt!

Samstag, 4. August 2012

TBS Discovery




Tech Specs:
Naza Flightcontrol with GPS addon (this is a must for FPV!)
Weight: 1,3kg (FPV ready; without battery and GoPro)
Motors: T-Motor MN3110 -15 780KV  (new, installed Mar/14)
Props: Graupner e-Prop 10x5
Battery: 4cell 3300-5000mah high C-Rating!
Battery bay measurements: 3-3,5cm high, max 5cm width, 14-15cm long
Power Consumption: avg. 319mah / minute  (using 3600mah 4cell  I get save 8 mins)

Current Naza Settings (28.2.14):
Basic Gains: P:100 R:100 Y:100 V:100  (since new motors and 10" Props had to move back to 100%)
   Atti Gains: P:100 R:100
Mounting GPS: -10cm,   Current Firmware: 4.02
Radio: FrSky X8R,   Expo and DR for Manual Mode 25% Expo, 70% rate

Resources:
TBS Store - also links to buildlogs!
FPV-Lab Forums (Trappy writes here!)
Speedstep23s Disco Tipps video
Loosing height on left turn? SOLUTION
Sebastians (Globeflight) intro to the GPS mode
you can also buy DJI stuff at Immersionsflug.de

Build Pics:


Things learned from my build:
Earplug Mod also works great on TBS Disco! Maybe some vibs but they don't get on the 720p60 mode of the gopro. 1080p30 works but has some jello.
GPS is very nice addon - gives you confidence while flying far out!
I already did a RTH test - and learned that TO DISABLE the autolanding you have to switch the mode switch to manual and back to GPS mode!!!!

Dampening of VideoTX is important. I used a foam piece - a simple 3m tape alone wasnt enough.
Unfortunately I burnt one VideoTX and the TBS Core on my build (switched red with black cable...) - so I had to leave this away for now - sorry Trappy!
Important: I had two motors "stuttering" and found a simple cause: I accidentally used 10mm screws to fasten the motors. This didn't "feel" wrong when spinning the motors by hand - but it caused this problem. As soon as I changed back to the original 8mm long screws - it was fine! I ran into the stuttering again by using Roxxy motors. I think the DJI ESCs are quite picky on what motor they support.
Looks like the Naza's barometer is sensitive to sunlight: it causes height drop if you turn into the sunlight. Prevent this by adding some black tape or foam on the left side of the box. See my video

Further tuning:
I ran through 4 types of motors:

First the stock DJI 920kv (150 Watt) Motors: they are not bad - only my sample had two with bad bearings - they turned harder - got hotter - I didn't like that.

Then my old Roxxy 2728/34 (110watt, 750kV): quite efficient with 10x4,5 Props - but this combo has vibrations (at least for me - maybe one can balance this properly and get good results). Power would have been OK. Another Issue: I had them "stutter" on my DJI ESCs - so they are maybe not compatible.

Last but not least RCTimer 2830/14 750kV (185 watt):
These are the selection from TeamWhiteLama - and sold from Trappy (TBS). They are just great, cheap and seem to run very smooth. (I had them for 200 flights and then switched as a precaution against failure to more expensive T-Motors (see above))

Tests on 4cell:
DJI Motors with 8x4,5 DJI Props: 17amps @ hover
Roxxy Motors with 10x4,5 Mikrokopter Props: 15amps @ hover (same battery)

Battery selection? I decided to use the Turnigy 4cell 3600mah 30c
(available in DE warehouse - ordered this tuesday afternoon, got them today!)
All batteries are in good shape and have around 400gr with connector. First one of them was used today. Work well and fit perfect in the bay! Power is more than sufficient for nice ascension! It's definitly worth to use 4Cells on the TBS! 3Cell isn't as stable...
Update: currently a SLS (Stefans Liposhop) 5000mah 4cell fits in perfectly and gives nice flighttime extra (10-12mins).






Sonntag, 18. März 2012

Cloverleaf / Skew Planar Wheel - Antennas

Update 6/2012:
I got new Antennas from Circular-Wireless.com (the guy who made the 100km range record possible!
They look very promising. I went with SPW Antennas (receiver and sender) plus an additional helical directional antenna (the weird looking spiral). It should have the same 60degree horiz/vert "cone" of reception as my previous used 8dbi patch - but this new one has 11dbi gain!




 



This is what my other SPW / Cloverleave antennas look like:
Left: TX Cloverleaf - 3 "leafs" / Right: RX Skew Planar Wheel - 4 leafs


In comparison to normal rubber antennas they are much better. Nearly no dropouts while flying 360° around!

The only problem I had here: the soldering "knot" got loose due to vibrations - so signal was bad. After i fixed the soldering I covered everything with a 1cm diameter epoxy drop. This should be safe now! (not visible on the pic)

Donnerstag, 5. Januar 2012

Techtipp Recording FPV Video USB Grabber vs DNT Action Recorder AR3.6

===> ENGLISH VERSION HERE

Wie nehme ich am einfachsten das Downlink-Video auf (also das analoge Videosignal, welches die Bodenstation erreicht). Warum nehm ich das überhaupt auf, wo doch die GoPro onboard in HD aufnimmt? Hauptsächlich als Vorsichtsmaßnahme - sollte ein Absturz passieren, ist es einfacher auf dem Video die letzten Sekunden zu analysieren, um zu wissen, wo das Modell zu finden ist, als sich im Gedächtnis zurückversetzen zu müssen.
Also: Sicherheit!

Ausserdem kann man auch mal ohne HD Cam fliegen wollen, und halt "nur" SD Qualität haben (Gewicht sparen, länger fliegen).

Bis jetzt hab ich meist mit dem USB Grabber auf dem Laptop aufgenommen (siehe Setup-Video) dies nimmt aber doch einige Zeit in Anspruch.

Nun hab ich jetzt dieses Ding hier gefunden:

DNT Action Recorder AR3.6

Es ist eigentlich als Helmkamera konzipiert, jedoch heute eigentlich nicht mehr aktuell (analoge Helmcam vs Gopro...) aber es hat interessanterweise einen AV Eingang, und auch ein Kabel um Chinchkabel anzuschließen, somit muß man sich nichtmal ein Kabel zurechtbasteln!
Die Technische Details laut Hersteller.

Mein Fazit: die Qualität ist zwar nicht ganz so gut wie bei der USB Grabber / Laptop Variante, aber dafür ist der Aufwand weit geringer. Wenn man das Video sowieso nur als Blackbox / Datenlogger verwendet, ist's sicher genug, für bestmögliche Qualität mit Analogvideo ist immer noch ein USB Grabber besser geeignet. Damit ihr den Unterschied der beiden Aufzeichnungsmethoden seht, hab ich das gleiche auf Laptop und AR3.6 aufgenommen und nebeneinander gelegt. Ausserdem werden hier auch gleich meine 3 verschiedenen FPV Cams vergleichen (420,480 und 520 TV Linien Auflösung).



USB Grabber Methode:
Digitus USB Grabber
Virtualdub zum Aufnehmen, XVid 8MBit Bitrate codec (hohe Bitrate, damit wenig Verlust)
720x576/25fps

Virtualdub posprocessing:
Filter deinterlace (ELA), Filter brightness/Contrast
gespeichert als uncompressed avi -> weitere Bearbeitung in Sony Vegas 10
(also hat man ein großes Tempfile zwischendurch und ein paar Schritte, aber auch gute Qualität)

Aufnahme mit DNT Action Recorder AR3.6
720x576/25fps
2,5MBit Bitrate
Einfach einen Knopf drücken, dann das File von SD Karte ins Videoschnittprogramm werfen.
Wobei: man sollte den "Bewegungserkennung" Modus verwenden, sonst wird die Aufnahme bei schlechtem Videolink abbrechen!!!!

Und so sieht das ganze nebeneinander aus:

(man sollte sich den Vergleich in 1080p und Vollbild ansehen!)

Sonntag, 25. Dezember 2011

MPX EasyStar2



Tec Specs (of my Stock RR Version):
Wingspan 1366 mm
Length 977 mm
Motor: original is: PERMAX BL-O 2830-1100
   (Upgrade: NTM2826-1200/17345NTM Prop Drive Series 28-26A 1200kv 250Watts!
ESC: MULTIContBL-20
Prop: orig. Folding 7x6"
   (Upgrade Prop: 8x6 trimmed down a bit (und cut some foam out of the fuselage as well...)
weight starting at: 700 g my act FPV Version: 995gr (with 270gr battery)
Flächeninhalt ca. 28 dm² (Flügel + Höhenleitwerk, ohne Rumpf)
Flächenbelastung ab 25 g/dm²

LINK: Testbericht

Maidenflight VIDEO here

Sonntag, 9. Oktober 2011

FPV Setup (Groundstation, Longrange Tower)

RCSchims FPV Groundstation:

This is my FPV videotower. It has an diversity controller (yellowjacket Pro 2,4GHz), two patchantennas (8 and 9 dbi circular polarized), an SD Card recorder and a 5000mah 3cell lipo powering this all.



Thomas Scherrer's LRS <-> 35MHz Futaba FF10

Diskussion über dieses Thema in deutsch (auf der FPV-Community
RCGroups Diskussion
Update: Scherrer himself "approved" my solution - so the next testflight should proove if it works under real conditions ;-)

I ran into serious cable issues with the connection of my Futaba FF10 via the trainerport to the Longrange system (Scherrer LRS). First I had the box directly fed from Futabas Battery and mounted on the back of the TX. This has two disadvantages:
- Futaba is RF sensitive and starts to beep if the rear sliders are in the middle position
- The LRS Box distorts the image on the Fatshark goggles if to near (within 1m)

So I mounted LRS box on a tripod, used an own 3cel battery for power and a long cable to the trainerport. This worked the last few month of FPV but it also has one problem: if used often the trainerport cable is worn qickly and this can lead to loss of control in the air (if you loose connection between LRS and Futaba).

Wireless LRS Uplink Twoer:
- Futaba FF10 with 35Mhz ch61 sending the signal of 35MHz to:
- ACT 4dsl receiver with PPM sumsignal option (often used on mikrokopters) this is connected to the LRS Box (PPM and ground)
This way I have no cable issues and no fear about a weak cable connector / soldering...
Just my Futaba and the LRS tower some distance away. To protect my LRS uplink from other RCers that might also use 35MHz and same channel I would use only a short cable on the ACT RX - so it "hears" only my signal. I heard of this idea but now I had a serious reason to try it out - and it worked on the first attempt! Great!


Here are 2 pics showing the LRS tower with my wireless option:


As you can see I tried to cover the important little 35mhz receiver with foam to protect it from the "daily fpv use". I hope nothing wears up here too fast. Also I had to use a seperate battery pack to power the 35mhzRX.

Donnerstag, 18. August 2011

Freitag, 15. Juli 2011

Setup-Videos

Nachdem meine Setupvideos nicht so leicht gefunden werden gibts hier eine Sammlung meiner Tipps / Since the setup-vids seem to be hard to find I list them here:


Samstag, 25. Juni 2011

Techtipp: Ortungspiepser / Plane-Finder

Update: da es den alten Pieper anscheinend nicht mehr gibt, hab ich hier einen neuen gefunden:
Since the old beeper can't be found anymore - I put the link to a different one:
Ortungspieper / Emergency beep locator




gefunden bei www.modellbau-peters.de
Produkt: "Der große Ortungspiepser" 19,95€

Den Ortungspiepser hab ich nach meinem Crash mit dem Maxiswift in den Wald gekauft (bei der Suche damals hatte ich mir das geschworen :-)
Er wird entweder auf einen freien Kanal gehängt - hier reagiert das Ding entweder auf Stromausfall mit Piepsen, oder wenn man auf diesen Kanal einen "Vollausschlag" macht (diesen als Failsafe bei diesem Kanal am Sender einstellen). Durch die eigene Stromversorgung piept der im Notfall auch dann noch, wenn die Hauptbatterie schon "ausgestiegen" ist!
Oder man verwendet z.B. den Seitenruder Kanal mit - dann piepst der halt auch in der Luft, wenn man einen kompletten Ausschlag auf dem Seitenruder lenkt (was eh nicht so oft vorkommt).

Insgesamt bin ich recht zufrieden mit dem Teil - habs zum Glück bis jetzt noch nicht gebraucht. Aber alleine ein Flug über hohem, dichten Gras/Feld geht so schon viel lockerer ;-)



This is a simple beep locator. It's fed by an own little battery so it won't go offline if you crash and your plane's main battery ejects...
It can be used on an existing channel (rudder for example) and here it will beep on full rudder (which should be the failsave-setting here) or if the power fails.
You can also use a separate channel dedicated to this beeper.

Freitag, 27. Mai 2011

Tricopter


Gewicht/weight: FPV Version inkl. 2500er Akku: 1,2kg
Erstflug: 17.5.11

Power at hover: 18 amp (in sum, not each motor!)
Flighttime: 7,5 min / 1400mah. at hover

The frame is made of aluminium and fibreglass G10/G 11 1mm tick
It has KK multi-copter controller,
- 18Amps HobbyWing Pentium ESC's
Cont Current: 18A
Burst Current: 22A
BEC Mode: Linear
BEC : 5v / 2A
Lipo Cells: 2-4
NiMH : 5-12
Weight: 19g
Size: 24x45x11mm
- Keda 920kv (Hacker style) motors
You can use 9x4.7 or 10x4.7 SF propellers

AUW weight with 2200mah 3s bat. is just under 1kg.
It is capable to lift some extra 700gr weight,but for nice and comfortable flying I wouldn't recommend to exceed 300gr
Test flight with GoPro on board
Assembly in timelapse (not built by myself!)

Sonntag, 20. Februar 2011

Hangar Video

Viel Spaß bei diesem kleinen Rundgang durch meinen "Hangar":

Hangar Link
Have fun watching this small introduction to my planes and helis.
Greetings,
RCSchim

Sonntag, 19. Dezember 2010

Maxi Swift

more PICS here
Motor: Turnigy SK 3536-910
ESC: Multiplex BL40
Prop: 11x7
Battery: 3cell 2650mah turnigy


Wingspan: 140cm
Weight around 680gr (without battery and without FPV Stuff), 1112gr Fpv & Osd (150gr)

CoG: around 30cm (Attention: my manual was wrong here - it was for the smaller Swift and said CG at 18cm!!!! That really wouldnt work well!)

Price: Foam 79€
2x MPX TinyS Servos, Motor 20$, ESC ~ 20$
so all together around 150€ maybe

Video-History:
Since the MS served me quite well as an FPV platform, I collected the best videos here:
http://rcschim.blogspot.com/2010/12/new-plane-maxi-swift.html
http://rcschim.blogspot.com/2010/12/maxi-swift-erstflug.html
http://rcschim.blogspot.com/2011/01/maxi-swift-erste-fpv-fluge-first.html
http://rcschim.blogspot.com/2011/02/fpv-milestone-mountain-rax-visited-32km.html
http://rcschim.blogspot.com/2011/04/panoramic-austrian-alps-schneeberg-rax.html
http://rcschim.blogspot.com/2011/04/maxiswift-fpv-schloss-kranichberg-crash.html
http://rcschim.blogspot.com/2011/05/maxiswift-adventure-continues.html

Sonntag, 24. Oktober 2010

Oktokopter


more PICS here
  • Mikrokopter Okto2, Mems Gyros
  • Flight Control 2.0, BLC V1.2
  • 10x4,5 Props, 4S 5000 Battery
  • 8x Roxxy Brushless 2827-34 (each 110w)
  • BTS555 Powerswitch
  • Thomas Scherrer LRS Diversity RX (Longrange UHF Radio 500mw)
  • ezOSD and IFOSC FPV Cam, 2,4GHz VideoTX, additional GoPro for recording
  • Power consumption: around 25amps in hover, 10mins with 5000mah 4cell
  • Weight (without battery): 1813g
  • Weight (fully FPV incl GoPoro and 5000mah battery): 2600g
  • Payload possible: around 1kg!!
Tip: the GoPromount was tricky. It's hard not to have vibrations on the video. So I tried different mounts and finally cam to this: mount the main battery with sponge between battery and kopter, than strap the gopro on the battery. The massive 550gr of the battery dampen the vibs quite good. Also use 720p60 mode (R3) of gopro - R5 is to slow. And NTSC not PAL - NTSC seems to be more smooth!

Dienstag, 7. September 2010

Parrot AR Drone

Dies ist ein kleiner, günstiger und vor allem fertig gebauter Quadrokopter. Die Stabilisierungstechnik zu dem Preis ist recht beeindruckend und macht das Ding zu einem Hightech-Spielzeug. Gesteuert wird über Wlan durch ein iPhon / iPad / iPod touch. Das Video wird zurück auf das Steuergerät gestreamt.

This is a small, cheap and RTF Quadrocopter. The stabilizer electronics work pretty well considering the price. It's a hightech toy steered via iPhone / iPad or iPod touch. The vide feed is streamed onto the control device (iPhone...).

INTEGRIERTES COMPUTERSYSTEM
* ARM9 468 MHz
* DDR 128 MByte bei 200 MHz
* Wifi b/g
* USB-Hochgeschwindigkeit
* Linux-Betriebssystem

TRAGHEITSNAVIGATIONSSYSTEM MIT MEMS
* 3-Achsen-Beschleunigungssensor
* 2-Achsen-Gyroskop
* 1-Achsen-Gyroskop mit Giergenauigkeit

TECHNISCHE DATEN
* Flying time: about 12 minutes
* Fluggeschwindigkeit: 5 m/s; 18 km/h (16,4 Fuß/Sekunde; 11,2 Meilen/Stunde)
* Gewicht:
- 380 g mit Outdoor-Schutzgehäuse
- 420 g mit Indoor-Schutzgehäuse
- Akku 106g
- Nur Drone 269
- Indoor Hülle 61g
- Outdoor Hülle 32g
* Flugdauer: Etwa 12 Minuten

SICHERHEITSSYSTEM
* EPP-Schutzgehäuse für Indoor-Flüge
* Automatische Propellersperre bei Kontakt
* Akku UL2054
* Steuerelemente mit Not-Halt-Taste für das unmittelbare Abschalten der Motoren

ABMESSUNGEN
* Mit Schutzgehäuse: 52,5 x 51,5 cm (20,7 Zoll x 20,3 Zoll)
* Ohne Schutzgehäuse: 45 x 29 cm (17,7 Zoll x 11,4 Zoll)


technische Details beim Hersteller

Forum: www.air-drone.de

Mittwoch, 21. Juli 2010

MPX Funcopter



FPV Update:

(had to sacrifice the nice canopy to exchange it's weight with the new FPV payload)


9min bei 2200er Akku beim Schwebeflug!

Weight:
Heli (all except battery): 1031g
Front foam: 95g
Rear foam: 63g
naked Heli (without RX and Batt): 836g
Blades (each): 42g

4S Tuning Measures (to be done):
ESC: 940-6 / Bladeholder: 2 degree instead of 5 / 4S battery (2500?)


My FPV experience with this heli:

+ it's nearly indestructable - I crashed-landed from 20m height, without real damage, on start it fell over to one side a few times - without the rotor taking any damage
+ it's silent and doesn't sound dangerous, you can fly on many places without getting much attention and people asking you if you have permission to fly here...
+ the big motor is efficient (6-7mins ~ 1500mah)
+ it's completly assembled - no work here (only main rotor to be screwed on)

- the low KV of the motor means, if you battery drops from 12,6v to around 10-11 volt you get noteably less power - so I had to land now a few times even if my 2200mah battery was half full
- the copter should be as lightweight as possible - this is the reason I removed the foam
- you can not add much additional weight - or the copter will have power for only around 5mins (I tried FPV gear with GoPro as cam - this was to heavy, VTX and normal FPV cam as I use now are OK - but 50-100g more for OSD or something would be too much already)
- it can handle some wind - but it doesen't feel safe to fly in the wind with this light heli. Removing the foam is good here - so the wind can't blow you away - because you have less surface - but generally I don't like to fly it FPV in windy conditions.

Conclusion: it's a fun, lightweight heli which is great for some fast and easy FPV fun. If you want to do advanced stuff - look for a bigger heli or a mikrokopter...)

Freitag, 16. Juli 2010

Mpx Funjet Ultra

Von Flieger
Multiplex Funjet Ultra
Motor: Turborix Black Tornado D2842 (3500Kv, 960Watts)
ESC: Turborix 80Amp + external BEC
Prop: 6x4 or 6x5e
Battery: 3000mah Turnigy 30C (or maybe 4cell soon)

Wingspan: 783mm
Length: 750mm
Weight: 980g (with 3Cell 3000mah)
Wingload: 60g/dm²

Montag, 5. Juli 2010

TsWing

Building log - Baufotos:
TsWing
RCGroups Thread
hier in deutsch: RCLine Thread

Gewicht/Weight: 730g mit Akku und Elektronik
Schwerpunkt / CG: 16cm SP-Berechnung - CG Calc
Neutraler Punkt: 19cm
Motor: orig. Motor von Parkzone P51 Gunfighter (960kv)
Prop: 9x6,5
Battery: 1800mah 3cell

Montag, 24. Mai 2010

Multiplex Funcub

 
Antrieb: Turnigy 3536-910 mit 11x4,7 prop
2200mah 25C Akku
51km/h / 1,4kg Schub / 8min Flug
20Amp
 
Servos: 2x TinyMG (Seite/Höhe)
2x Hitex HS55 (Quer)
2x MPX Nano (LK)  

Ausschläge: HR oben 25mm / HR unten 22mm
SR 25mm / QR oben 22mm / QR unten 12mm
(Ruderausschläge werde jeweils an der tiefsten Stelle gemessen!)
50-60% Reduktion für Trainer Betrieb (DR)
 
Technische Daten: Spannweite 1400 mm
Länge über alles 980 mm
Gewicht: 870g (ohne Aufkleber) Fluggewicht ca. (Mpx: 1130) g
Flächeninhalt 38 dm²
Flächenbelastung 30 g/dm
CoG: 80mm (10mm +- sollte kein Problem sein!)

GoPro mount sketch (for LOS Camflights): 
   
Update Sept. 2010 - new GoPro FPV mode - Mounting versions: