Donnerstag, 22. Juni 2017

Runcam SPLIT: FLIGHT Footage, Jello, Mounts, weight savings!

Tech Specs: (similar to the Runcam3!)
Weight 23g.
1080p60 + Low latency FPV + WDR
$69.99  (+5$ for Wifi option)
no wide voltage, only 5V!




More findings:
Transfer speed over USB: ~ 15mb/sek
so a typical 5min flight will generate little over 1GB means ~ 1.5mins.
Not optimal - ok if you have to place the board inside inaccessible (USB needs to be accessible of course!)

Jello: with that small lens module jello (vibration "waves" in the video) will be picked up easier since the low mass is moved by vibrations easier as if you would have a bigger mass (like a heavy HD cam).
I tried different mounts, only after I swapped that one really bad prop it was ok. I didnt see this vibrations with that faulty prop on my gopro style SJCam 5000x before!

Downlink video is fine to fly - latency low enough for my taste!

My Vortex 250 is now 83gr lighter (from 532 to 449gr) - this is a lot on such a copter and effects it's flight characteristics and efficiency! It's really "floaty" now and should give me longer flighttimes. Combined with endurance motors/props and larger motorarms this could be a really good longrange setup!

Freitag, 16. Juni 2017

Most accurate FPV cam latency test method? and: eliminate interference in your downlink video



My most accurate FPV Cam latency test setup:

2 channels (curves on osci):
ch A = video signal (NTSC)
ch B = 12v powersource for my LEDs   (I think I dont measure the actual switch on, but rather the time when it "consumes" the 12v. Would be interesting to know how much time does it take the LED to light up?)

Measure the delay from LED switch and the "effect" from a dark cam image to a RED LED light screen (noticable effect on the video curve).
This way we still have the 17ms steps of time resolution since we only see 60fps on NTSC. So we cant measure cam latency more accurate than in 17, 34, 51ms...
BUT: until now I used a LCD screen to read the VIDEO signal changes (and the screen also runs a certain FPS - so this is not accurate anymore - better to "read" the video signal directly without a LCD).

FPV Cams Latency overview:  (June-2017)     (also available as XLSx File)





Interesting Links:

Mittwoch, 7. Juni 2017

eFlite Rare Bear FPV

It started like this: as the only FPVer on the field I always end up chasing planes with my quads. I wanted to do some more LOS flying (line of sight, normal RC stuff...).
So I re-activated my eFlite "Rare Bear" racer plane (they really like this plane on the field!). After the first flight session I thought to myself: "what if I mount a runcam3 on it, and use TV out to my VTX? The installation was quick and easy, works nice. Just have to get the plane flying smoother in higher winds to enjoy it more... (maybe I have to install a stabilizer?)



Plane:
=====
eFlite RARE BEAR   http://bit.ly/2sDnfUg
Wingspan: 88cm
Prop Size: 8x8 Electric
ESC: 70-Amp
Battery: 3300mAh 4S 14.8V 50C LiPo ~ 5mins flighttime

FPV:
====
just a Runcam3 (yes, I know they're out of stock cause they have this problem with Gopro...)
TVOUT cable to ImmersrionRC VTX
Power source: 3 of the 4cells off my main battery (12v) from the balance plug. Super easy!

Mittwoch, 31. Mai 2017

DYS Elf - tiny brushless drone, indepth crashtests for 2 weeks

Great little indoor (and outdoor on low wind) copter! Powerfull almost acrobatic, should be 3cell capeable. Use of brushless motors increases the efficiency here!
Definitly the best indoor copter I've tested so far in this class below 10cm (83mm motor to motor).

One of the best features: you can fly this almost anywhere and stay legal. You can't possibly harm someone with this tiny drone, but the flying feels good, locked in and controllable - gives you a good FPV feeling!


get it here: Banggood  (►►8% off coupon: ToysHo)

Tech specs:
==========
Motors: BE1102 10.000kv
ECSs: BLHeli, DShot, 10amp
Battery: one 600mah 2cell with 25C  ~ 4-6mins
Flight Control: F3
Props: 1735 five bladed (1.7")
800tvl 170° FPV cam
5.8ghz 25/200mw  (comes in 200mw mode, can be set to 25 with removing a "solder-jumper/bridge"
88gr, 2mm carbon frame supported with  durable plastic frame
Receiver: Frsky Type D8

MinimOSD integrated, so you can set PIDs and other settings on the field! See Battery voltage and get "Low volt" warning.

TIPS, Mods:
==========
Remote is setup nice, maybe you wanna adjust the expo/rates.
Binding to Taranis was a huge gain for me (more precision).
Binding is easy, just power on copter without remote - it goes into bind mode. Then use BIND option in Taranis with D8 mode...

Antenna / Videolink: 
  200mw get wasted here because the antenna is flat mounted under the board beneath the battery - terrible placement!
Remove Battery cage, use velcro instead and get Antenna out (careful). Increases range and quality, will not decrease the multipathing here since it's a linear antenna...

Control Link: 
had no issues / failsafes in my flights but I wasnt that far out...

Feet / structural integrity:
use some foam to have the landing gear protected against hard landings (which will transfer too much stress to the motor arms). Maybe also use some foam ontop the copter. Ducts of props are made of durable plastic!

RCGroups thread about this copter

Mittwoch, 24. Mai 2017

Hughes 500 chased with my Drone

Thanks Norbert - for risking your Copter :)

TECH SPECS of that nice scale-heli:
=============================
Rumpf: ALIGN MD500 BREITLING HUGHES 500
Base: T REX 500
Motor Scorpion 1400 KV
Rotorhead: ALIGN 4 BLATT
ESC: YGE 90 LV with 6Volt Fan
Blades: BLATTSCHMIED HALBSYMMETRISCH 425MM
1.800 RPM/min
Battery: Lipo 6s 5000 mAh

Sonntag, 21. Mai 2017

Antennas tested in flight: Pagoda vs Aomway SPW, TBS Triumph and "normal" linear


Video index:
==========
01:31 std. antenna (linear)
03:16 std. ant. multipathing test
03:56 AOMWay SPW
06:22 AomWay multipathing
07:09 TBS Triumph
09:01 Triumph multipathing
10:02 PAGODA
11:47 Pagoda multipathing
12:49 Range test with 30db ATTENUATOR
13:41 Atti and Std. Antenna
14:39 switch to AOMWay
16:05 switch to TBS Triumph
17:14 switch to Pagoda
19:14 Atti+std.Antenna and 2xPagoda on Goggles VRX
21:15 CONCLUSION
24:20 -- 4 antennas DIRECT COMPARISON footag!!! --

Multipathing:
When the video transmitter (the copter here) emits the RF signal - it goes straight to your receiver (line of sight!) and also gets reflected off some obstacles (like the big building here).
The reflections do arrive at the receiver slightly later (longer way) so the RF waves (direct and reflected ones) will either "add up" or "null out" each other. Interference occurs and distorts your video image.

Circular polarization helps here, because the reflected signal will be "filtered away" almost completely.

Sonntag, 14. Mai 2017

...like it was made for powerloops!

Nice spot right outside of work, own parking lot AND dedicated powerloop gate wich is also a scenic picture frame :-)

The flights in sunny conditions wer BEFORE I tuned this quad better (using the tips from Joshua Bardwell regarding PID Filters).
The Evening flights at home were just to try the quad out - less wind here as well - but very smooth after PID filter tuning.
See: https://www.youtube.com/watch?v=PHkofDq_JxU
to get rid of propwash oscillations in Betaflight...

Freitag, 5. Mai 2017

Foxeer Legend 3 Review, Quality compared to Yi4k, Runcam 3 and Legend 2

Foxeer's Legend 1 was one of the first small cams capeable of 1080p60 (but the quality wasnt that good). The Legend 2 was terrible in scaling down to 1080p60, the Legend 3 now looks way better. It's a bit larger than the L2, but the quality of 4k and also the 2.5k/60 mode is really good.
I wouldnt wanna fly a lot with my 250$ Yi4k - but this 150$ Legend 2 is kinda ok to risk it on a miniquad. And the quality is almost the same (Yi4k still is one of the best, imho better than the Gopro5).

As I told you in the vid: there will also be a boxed version (aka Gopro Session sized) with same specs. Might be the killer cam in a few weeks (June?).

Please stay tuned for the raw footage links here - I have to upload them later (sorry bout that).

VIDEO Index:
00:54 first comparisons
03:00 Stabilizer?
04:30 almost all resolutions shown
06:15 Legend 3 on my Osmo mobile
06:45 continue with review, menu, options,...
09:28 slowmo not good
09:47 timelapse quite good!
10:16 some adult stuff going on here?
10:46 stabilizer off vs on
12:55 flight sample (2.5k60 down to 30fps)
14:01 flight video with sound
14:37 walk in the park (more samples in 4k)
15:19 Chihuahua in slowmo
15:51 flowers

some Tech Details:
Chip: Ambarella A12S75
Sensor: Sony IMX117 1/2.3"
Lens: 155 degrees Ultra Wide Angle
Built-in 3 axis gyroscope and 3 axis accelerometer (stabilizer not very noticeable)
1000mAh battery    (Rectime good:  2.5k 60fps  1h:04mins ~ 17GB)

Freitag, 21. April 2017

Runcam Micro Swift



Swift Micro CCD   get it -> here
Dimensions: 19x19x19mm!
Latency: ~ 25ms
Resolution: 600 Tvl
Weight: 7gr
Lens of course is NOT compatible with lenses from the "normal" FPV cams out there - it's much smaller!

Freitag, 14. April 2017

POWERLOOPS are fun (scary moment included!), Sailplane air2air, little crash...


Since the XJaguar flies really nice I did more training flights and wanted to powerloop that nice bridge. Water is scary, that one moment made me scream out loud! Watch it all to see if it had a happy end :)

That sailplane crashed a few moments AFTER I landed my drone. I had his permission to fly with him and did NOT irritate him while flying. Hard to access this high tree - we wait for some gusty winds now.

Greets and happy easter,
RCSchim

Montag, 10. April 2017

Fatshark Diversity Module Quanum HB5808 (50$) vs FR632 Groundstation


I got this from Hobbyking (get it here) for testing. Found it interesting and my standard 5.8 module was not reliable, neither was the upgraded FSV2445 antenna diversity module...

It was some "sweat"work on the goggles and I dont have nice covers/doors yet - but the functionality is just awesome. I can fly WITHOUT my FR632 tower now and have good video downlink! Makes quick FPV sessions much easier!

Check out Bardwells videos on the different modules to see if the Furious TruD or the LaForge is better for you. The conclusion I found: LaForge seems to be the best (from features and usability) but the RF performance is pretty similar on all of those.
Pricerange is from 50 - 120$

There's also a single-slot module at similar price if you prefer
Looks like it uses the same RF hardware, also looks similar to the RealACC that Joshua reviewed: https://youtu.be/TkBVJU8n2Fk&t

▼Music▼
Billyrocka 3 - Sven Karlsson
Kevin McLeod - Darxieland

Donnerstag, 6. April 2017

Runcam3 Review (Comparison with Yi4k, WDR, menu, low LATENCY) | RCSchim Hangar

This is the "proper" review, with many outdoor shots, menu options, latency test and some more acro flying at the end.
Really like the cam and would say you can't do much wrong with this!

00:37 outdoor comparisons
02:23 WDR on and off difference
04:10 LOWLIGHT performance
04:24 my thoughts
05:14 MENU options walkthru
07:28 LATENCY tests
07:56 closer look, final thoughts
10:01 acro flights on a sunny morning

Battery-Time:
in room temp, 1080p60/WDR it gave 68mins and got medium warm. When battery was empty it safed the file this time.

Recomended settings:
At noon with plenty sunlight: 1080P 60FPS, WDR off (colors more naturally)
cloudy at afternoon: still choose 1080P 60FPS, WDR ON
low light: 1080P 30FPS, WDR on

First flights on the Eichberg to see more "real life" footage as the cam will probbably be used the most:

Donnerstag, 16. März 2017

Runcam Swift2, Foxeer HS1190 and more FPV cams compared (accurate latency measurements!)

See my new, ACCURATE, latency measurements here (thanks Daemon42). Now we're down to +-5ms accuracy! Those cams are pretty impressive. Runcam Eagle had good reviews already, Swift2 and HS1190 are good as well. I also compared the Owl+ and the AMOWay. Image looks good on most cams if DWDR options is turned on.


►Cams tested:
Foxeer HS1190
Runcam: Swift1, Swift2, Eagle(16:9), Owl+
Aomway WDR 700 (Cmos)

LATENCY [ms]: (LED test, accuracy +-5ms)
19 Owl+
20 hs1190
24 Swift2
24 AOMWay
30 Swift1
47 Eagle (processing comes with a lag penalty...)

►TIP: additional OSD: (volts, Nickname, Timer):
Press and hold the button UP for 2 seconds to enter OSD Setting menu

►Settings: leave most settings on default - BUT ENABLE
the DWDR setting! It's like "turning on the light" - AWESOME!

Dienstag, 7. März 2017

DJI Mavic Pro Accessories II with LIVEStream Giveaway

As I promised you guys: if I do reviews (or get invited to) I try to get free stuff for you as well!


The live draw as recorded video:




Donnerstag, 23. Februar 2017

Foxeer Legend 2: SCALE FAIL! VLog style review and compared to Legend1, Runcam2, SJ M20

I've waited 2 month now for a new firmware which should have better scaling. Last FW from 27.12.2016 did not help here.
Instead they now gonna release the Legend3 (March) and make me look like a fool releasing the review for the Legend2 so late :)
I think the hardware wasnt fast enough to downscale properly. Legend1 didnt have to downscale (since it is native 1080p).



IMPORTANT - see additional images for quality comparison


►Legend 2:
- like the low weight (45gr), the handling, build quality,
- rubber shell for protection
- cables, RC channel switch
- lost cam alert!
- wifi app is ok, but neccessary to change settings - small display preferable!
- really sharp in highest quality (2.5k), but terrible downscaler

Sensor: 12 megapixel Sony Exmor R BSI CMOS back-illuminated
CHIP: ? didnt find specs to the chip - and this maybe the cheap compromise here (which cant scale well)
Lens: FOV155°, F2.8, 7G optical glass lens
Length x Width x Height 67mm x 39mm x 17mm
Weight:45g
Battery: 700 Mah, 3.7 volts, 2.59Wh Watt

Resolutions:
UHD 24 2880×2160 16:9
QHD 30 2560×1440 16:9
2K 30 2304×1296 16:9
1080P 60, 30 1920×1080 16:9
720P 120, 60, 30 1280×720 16:9
VGA 240 640×480 4:3

Firmware
RCGroups
----------------------------------------------------------
►Runcam 2: yes I know - it's not focussed properly. My bad!
----------------------------------------------------------
►DJI Osmo Mobile:
OK, I saw it (too late) half my gimbal shots with S7 in 4k were out of focus. Happens to me sometimes with the phone. Needs extra care!
if you buy the R0de VideoMicro (50€, very good!) you get the TRS cable (which is NOT compatible with PHONEs - but rather with the original Osmo cam).
I found this adapter cable from "TRS" to "TRRS":
1x Rode SC7, Adapterkabel von 3,5mm TRS Klinke auf 3,5mm TRRS Klinke, Anwendungsbeispiel: Rode VideoMic Go, VideoMicro (oder ähnliches Mikrofon mit TRS Ausgang) zu iPhone oder iPad
got it from here: http://bit.ly/2lIIuTr

Mittwoch, 15. Februar 2017

FPV Goggles Overview

Banggood supplied the Eachine goggles and short after Hobbyking sent me the new Cyclops v2. It was a good chance to compare these and also make an overview of FPV goggles for you guys (there will be a part2 soon with "normal" FPV goggles like fatsharks).

Videoindex: (use it to jump to interesting parts)
01:00 Eachine Goggles two
01:08 RP-SMA antennaconnectors
01:57 AV out
02:20 Box contents
02:35 Quanum Cyclops v2
02:53 single VRX
02:59 old Cyclops only autoscan...
03:32 battery pouch, SMA
04:15 AUTOSCANS works great
04:27 more buttons (finally!)
05:10 wearing comfort?
05:58 fresnel lens (adjustment effect?)
06:05 Box contents
06:56 IMAGE tests
07:18 cyclops v2 menu
07:44 effect of fresnel adjustment (none?)
08:03 Cyclops v1 (weird colors)
08:25 Eachine quality (nosepart fail)
09:36 sharpness? (HDMI supersharp, analog not so)
10:01 Eachine autoscan fail (5mhz off)
10:22 menu
11:08 DIRECT comparison Cyclops v2 vs Eachine G2
11:28 findings / summit Cyclops v2
12:02 findings / summit Eachine
13:25 LIVETEST: flying miniquad with new goggles - will I crash?
14:03 YES :)
14:19 livetest of Cyclops
15:03 final thoughts


2nd Video with the different Fatshark models I've used before:

Donnerstag, 9. Februar 2017

DJI Mavic: frozen Lake at golden hour

We took the chance to skate this beautiful lake (last time frozen fully in 2009). The Dog (Charlie the Chihuahua) like the imperfect ice for he had more grip.


This is the 2nd part from this location. More RC Car slowmotion this time.

Dienstag, 7. Februar 2017

ImmersionRC Vortex 150 under the Bridge



Mini Review / Vortex Tips:
Batteries tested:
Like the Turnigy Nanotech 850mah 4cell the most,
Graphene 750mah 4cell is ok as well
Graphene 500mah is acro - but too short flighttime
Turnigy Bolt is not good!
1min you feel some extra punch - but then it's even worse then the Nanotech 850!

Foxeer Legend2 - is a nice option as HD cam here - but the quality should be better in 1080p. Weight of 45gr is ok for this little quad - but of cours it "feels" more sporty and lighter, more acrobatic without the payload. But where's the fun if I cant show it in HD here? :)

Donnerstag, 19. Januar 2017

DJI Mavic Pro Accessories: prop guards, hardcase, landing gear extensions and ND filters

See some nice accessories for your Mavic here: Hardcase, Propguards, Landing gear extensions and ND filters/CPL Filter

Mittwoch, 11. Januar 2017

Reptile S800 Sky Shadow FPV Wing review

Finally I have a working flyingwing for FPV in 2017! Multicopters kept me so busy and were so convenient last year that I didnt enjoy the pure joy of fixedwing aviation. Really looking forward to do so soon!
►view/buy it here: http://bit.ly/2i3mr8S

RCG Thread: http://bit.ly/2icozf0
Iforce2d build video: https://youtu.be/BdBlrEdJN-k
Banggood flying video: https://youtu.be/VkATBP4dy8Q

BUILD TIPS:
- gluing
use sandpaper to roughen the surfaces and then use UHU Por, or gorilla glue
- glue the servo hinges!
- cut own servowire channel to use orig servo wires
- use threadlock glue on motor screws

TECHSPECS:
Material: EPP
Wingspan: 820mm
Length: 405mm

Servos: Emax ES08A 9g*2
Motor: Sunnysky 2205 2300KV
ESC: Reptile 20A ESC
Battery: 1800mAh - max 2200mah 3S
Props: 6045
Flight Controller: 3-Axis gyro, 3 modes
Camera: 700TVL CMOS cheapo
VTX: 5.8ghz 200mw
CoG: 125mm behine the nose

Package Includes:
2 x Wings
1 x Fuselage
2 x Small Wing Tips
1 x Nose Block
1 x Main Hatch Cover
2 x Emax ES08A Servos
1 x 3-Axis Flight Control
1 x Flight Control Circuit Board Base
1 x Sunnysky2205 Motor 2300KV
4 x 6045 Propellers (2ccw, 2cw  :) )
1 x 700TVL Camera
1 x 200mW AV Transmitter
1 x 20A ESC
1 x Stickersheet
1 x User Manual (4 pages)