Wednesday, May 31, 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

Wednesday, May 24, 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

Sunday, May 21, 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.

Sunday, May 14, 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...

Friday, May 5, 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)

Friday, April 21, 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!

Friday, April 14, 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

Monday, April 10, 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

Thursday, April 6, 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: