kopterheld's blog View Details
Posted by kopterheld | Jun 02, 2019 @ 07:50 PM | 731 Views
With a flying weight of under 68 grams a big fun. The FPV Micro Racer is so great to fly. So far, I have had so much fun with only 5 inch racers, but never with a micro racer with a size of 105mm motor distance. Betaflight 4.0.2 is installed on the SailFly X. The throttle is limited to 75%. If the throttle is set to max. 75%, you have no more vibrations and the battery lasts longer. I've taken over the PID settings from the YouTube Albert Kim channel.
The flight behavior of the Micro is awesome. Fly perfectly with the original 3S 300mAh Lipo.
There are only two disadvantages of the SailFly-X and this is the D8 receiver loses the connection after 100 meters and the bad video antenna that does not reach more than 100 meters. I have already flown other racers with 25mW and they had better video channels or antennas and thus a better video reception. The D8 receiver can be replaced by a FrSky R-XSR or with FrSky XM receiver, then you have a perfect reception with 1 to 2 grams more weight. Then I would be at 70 grams takeoff weight. The SailFly is so durable I did not think so. I have repeatedly crashed on the hard ground and nothing. Only the propellers have bent. The propellers I could even turn back and fly on.

Sailfly-X at
Banggood with Coupon: TTxBG10 http://bit.ly/SaFlyX

My full DIFF from Betaflight 4.0.2 here:

Video 1 – Happymodel Sailfly X Micro FPV Racing Drohne
Happymodel Sailfly X Micro FPV Racing
...Continue Reading
Posted by kopterheld | Apr 09, 2019 @ 11:02 AM | 1,833 Views

This ist the Diatone GT-R349, the high speed 3 inch FPV Racer.

The canopy is made of a transparent plastic, not very durable. There are two replacement canopys.

...Continue Reading
Posted by kopterheld | Apr 08, 2019 @ 09:41 AM | 1,883 Views

Last weekend I tested the iFlight CineBee 75HD at 1800 meters on the mountains. A very nice, tiny Cinematic Whoop.

The Caddx Turtle V2 camera even has the new Glass lens on it.

...Continue Reading
Posted by kopterheld | Feb 25, 2019 @ 09:31 AM | 3,755 Views
The freestyle frame is great. Especially the 2inch version fit on even the 2.5 inch Gemfan 2540 propellers.
Flies good with the battery on top with the Runcam Split mini 2. If you want better FPV video add a Runcam Racer 2 Camera as second camera on the top in a 3D printed case. This is my best HD mini quad, better as Beta85X or another micro drones.
The site with the 2.5inch propeller is the best solution for maximum power with the 1106 motors and 3S-4S Lipo 650-850mah.

Check my review DE with EN subtitles
GEPRC Cygnet CX2 Zoll Runcam Split HD Freestyle Racer (6 min 53 sec)

...Continue Reading
Posted by kopterheld | Feb 25, 2019 @ 09:14 AM | 3,211 Views
I tested the X220HV - It flies very well. The motors are grandiose. The FPV video is very clear, if you mount the XT60 cable on the left side and disable the Speedybee Bluetooth module. Some reviewer say the ESC 4in1 board have connection issue with the FC board because the pins are too short.
My Eachine Wizard X220HV flies without problems. Very long with 4S LiPo and with many power with 6S Lipo

My review DE with EN subtitles
Eachine Wizard X220HV klasse Freestyle FPV Racer 122EUR (4 min 41 sec)

Eachine Wizard X220HV 6S
122€ - Banggood Coupon: X220HV
Please remove the Gift PDB from the order to activate the coupon.

Link -

Coupon and Copter News check my Facebook or Blog:

Kopterheld Coupons with mobile Telegram App:

My equipment:
Fatshark Dominator HDO - http://bit.ly/2rrwvv4
ImmersionRC RapidFIRE - http://bit.ly/2Ejs3XR
FrSky TARANIS Q X7 Funke - http://bit.ly/2Do7E2p
FrSky X9D Plus SE Funke - http://bit.ly/2z4KxXG
FrSky Taranis X-Lite - http://bit.ly/2CoAezQ
iRangeX IRX4 Plus Multi Modul - http://bit.ly/2QrTIeT
FrSky R-XSR Empfänger - http://bit.ly/2AiHDOO
RunCam Split Mini 2 - http://bit.ly/2SKjCMQ
RunCam Racer 2 - http://bit.ly/2BZJCtq
RunCam Micro Eagle - http://bit.ly/2BPNnkL

Blog – https://kopterheld.tv/
Facebook – https://www.facebook.com/kopterheld/
Youtube – https://www.youtube.com/kopterheld
RCGroups – https://goo.gl/JYP87D
Telegram - https://t.me/KopterHeld
Twitter - https://twitter.com/kopterheld
Posted by kopterheld | Nov 28, 2018 @ 10:42 AM | 4,693 Views
The new Diatone GT-R239 is the new R90 2 inch FPV racing drone from Diatone. It have a plastic frame that is flexible and therefore durable.

A perfect drone for a beginner! The electronic componets are the same as in the 2.5 inch Diatone GT-R249
Both drones have the new Cobra 5500KV motors that works good with 3S on a 2 inch and very good with 4S on a 2.5 inch frame.
The F4 flight controller is very stable and the Runcam Micro Swift camera get with the VTX a very good video picture. Ok, ok, now you did not have the TBS Unify Pro VTX with 25-800mW and now you get only the Runcam VTX with 25-200mW but the drone cost only $99 That's good price for a prefecte 2 inch FPV racind drone.

Now, I thing you have the big question as a beginner FPV pilot. Witch is better 2 or 2.5 inch drone. And, yes the 2.5 inch is better for flying.
But the Diatone GT-R249 2.5 Inch have thin arms and if you have a crash the you destroy the arms after the first flight.
So my recommendation is take the 2 inches drone and later if you can fly, then you can transfer all components to a 2.5 inch frame.
My opnion is the Diatone 2018 2.5 inch frame better, durable and you can put on top a mini HD camera like the Firefly mini HD camera or the new Quelima SQ20 Mini HD Camera.
But currect you can not get the old Diatone 2018 frame because it is sold out and you can get only the GT-M2.506 bottom carbon spare part and get the aluminium canopy from the available Diatone GT-M2.5 Normal Plus...Continue Reading
Posted by kopterheld | Nov 28, 2018 @ 09:09 AM | 4,356 Views
Frsky Taranis X-Lite 2.4G 16CH Transmitter with Hall Sensor Gimbals Mode 2 + R9M Lite + R9 Mini Receiver
Cool the long range version.
130€ Flash Deal

Package Contents:
- X-Lite Transmitter
- R9 Mini Receiver
- R9M Lite Module

The X-Lite is the new version with two more screws at bottom.
With the bundle you get the R9 Lite long range module with the standard elastic antenna. Better you get the FrSky Super 8 antenna for the module for better range.
The very small R9 MINI receiver have only a non inverted output for telemetry. If you have a F3 or F4 flight controller then it is better to get the newer FrSky R9 MM receiver.
The new R9 MM receiver looks the same as the old version R9 MINI but the new have a non-inverted telemetry output tu connect to a free TX port on your FC. For more better range you can use the new FrSky Dipole T Antenna on your 4-6 inch FPV racer drone.

Link - Taranis X-Lite with R9M from Gearbest

My video (EN subtitle) - Taranis X Lite german EU Firmware with R9M Lite 900MHz Module
Taranis X Lite deutsche EU Firmware mit R9M Lite 900MHz Modul (4 min 8 sec)

Link - FrSky R9 MiNI receiver from Hobbyking for only $9.50

Link - FrSky R9 MiNI receiver from Gearbest Coupon: SWwOx6Jg:

FrSky R9 MM receiver from Banggood Coupon: TTxBG10

Link - FrSky 900MHz Super 8 Antenna for R9M / R9M Lite Module from Banggood Coupon: TTxBG10
...Continue Reading
Posted by kopterheld | Nov 23, 2018 @ 11:25 AM | 5,330 Views
Wow a symbioses from Beta75X and Mobula7 with a better FPV camera the Caddx EOS2.

Eachine TRASHCAN 75mm Crazybee F4 PRO OSD 2S Whoop FPV Racing Drone Caddx Eos2 Adjustable Camera
$99 - 87€ PNP


Eachine TRASHCAN have a 75mm wheelbase and the new Crazybee F4 PRO flight controller with OSD for 2S LiPo battery. The Motors are smaller as the from Beta75X with 0803 16000KV . The Caddx EOS2 camera is adjustable with a 25-200mW VTX that support Betaflight OSD (BFOSD)
Only 33g without batteries. 4x 300mAh 40C 1S HV batteries are included.

...Continue Reading
Posted by kopterheld | Nov 16, 2018 @ 06:35 AM | 4,792 Views

This is the Happymodel Mobula7 that is a Tiny Whoop drone with 1S and 2S Lipo power.
M7 is light, very fast and flies over 4 minutes. I just can not find any negative points on the Whoop. The Snapper7 1S Whoop was good, but M7 is much faster, more aggressive and weighs no more than the Snapper7. And if someone needs slow flying, he can fly the Mobula7 with a 1S Lipo. The changeable angle of the camera is practical. Outside you fly fast and need a steep angle of the FPV camera. Inside with slow flies one places camera completely flat. Inside, the FPV camera is sufficient. Outside, I would like a better FPV camera like the Caddx Turbo EOS2.

Get the Happymodel Mobula7 from Banggood

Link to Banggood with 12% CoupoN: 12TS130 or TTxBG10

Video 1 – Mobula7 2S Whoop review
Happymodel Mobula7 perfekter 2S Whoop - Review DE (4 min 23 sec)

Video 2 – Mobula7 2S Outdoor Flying
Happymodel Mobula7 2S Whoop Outdoor Flugtest (4 min 51 sec)
...Continue Reading
Posted by kopterheld | Nov 09, 2018 @ 08:20 AM | 4,357 Views

This is the Eachine Wizard TS130 that is a 3 inch drone with big motors and support 3S and 4S.
Wizard TS130 is flying very well with 3S and have many speed with my Tattu Lipo R-Line 850mAh 95C 4S. The CCD Foxeer camera is very good.
Please update the Omnibus F4 to the latest Betaflight firmware for better performance with 4S LiPo.

Get the Eachine Wizard TS130 on Banggood

Link to Banggood with 12% CoupoN: 12TS130 or TTxBG10

Here my review video
Eachine Wizard TS130 3 Zoll FPV Racer (4 min 1 sec)

Used the
Tattu R-line LiPo 850mAh 95C 4S XT60 - Amazon...Continue Reading
Posted by kopterheld | Sep 06, 2018 @ 04:19 PM | 22,271 Views

This is the Eachine Tyro99 kit that costs under $99. There are many small parts, but easy to assemble. After about 6 hours of work, the Tyro99 is ready to fly and weighs about 330 grams.
Tyro99 is flying very well, but the CMOS camera could be better.

Get the Tyro99 on Banggood now:

Link to Banggood

Here my review video (EN subtitle)
Eachine Tyro99 DIY FPV Racer Drohne - Flugtest (4 min 33 sec)

...Continue Reading
Posted by kopterheld | Aug 17, 2018 @ 10:04 AM | 5,057 Views

Warlark Pro 85 is some time old, but you can get it on offer for about 80 € with a Frsky, Flysky or DSMX receiver. The Tiny Whoop is with 2S Lipo what makes it so interesting. With 2S power it's much faster and more aggressive when flying than a 1S Tina Whoop. Ok, the weight of 50g is of course more than a micro Tiny Whoop with 20g.

Warlark Pro 85 BNF FrSky - $91 - Gearbest
...Continue Reading
Posted by kopterheld | Jul 24, 2018 @ 05:58 PM | 5,584 Views

This is the FXT Viper FPV Video goggles which is perfect for wearers of glasses. At the front is the LCD 5 inch monitor and at the back is a silicone cover which is removable.
Only one LiPo battery is needed and you're ready to go. Incidentally, the good LCD monitor can be used without the goggles.
In the goggles are two mirrors that bring the picture over a longer distance to the eyes. Thus, the goggles are quite compact and yet I can see the picture sharp with my licked eyes without reading glasses. Included are two simple linear antennas and an adapter with XT60 connector for connecting a 2 to 5S Lipo.
What I like very much, that the sun visor of the goggles is removable and so you can perceive the environment left and right and still look on the monitor. Just great as a monitor in front of the eyes and you see the environment. The monitor only shows the video in 16 : 9 aspect ratio, which may be adjustable to 4 to 3 in the future, Hey FXT support please add 4:3 aspect ratio. PAL or NTSC format is detected automatically. Via the auto search function you can find the video signal from the quadcopter, and you can save the frequency on the left. Above the DVR button, a video recording is started and with a long press you get to the video player via which you can watch the recorded video from the 32 GB SD card. This is the first LCD monitor that is perfect all round. I can use my glasses, it is very good to wear, delivers perfect FPV video and the monitor's response is...Continue Reading
Posted by kopterheld | Jul 06, 2018 @ 08:39 AM | 5,696 Views
You can ease flash or update the RX5808 Pro Plus OSD module:
(Only for the new RealAcc RX5808 Pro Plus with OSD and the new STM32F1 controller)

1. download achilles Plus for Eachine Pro58, current v1.8 from
2. press the BOOT button and connect the USB cable
3. wait about 3 seconds
4. open Betaflight
5. go to firmware flasher TAB
6. Load firmware (local) button and select the achilles firmware
7. enable 'no boot sequence'
6. Flash firmware and you are ready with the update

Get the RX5808 PRO PLUS OSD with cover here:

Link to Banggood

Here my Flashing video (EN subtitle)
RealAcc RX5808 Pro Plus OSD flashing Achilles firmware mit Betaflight (1 min 51 sec)

My Equipment from Banggood:
Fatshark Dominator HD3 - https://goo.gl/6Z9eU4
Eachine Pro58+Achilles - https://goo.gl/x4v74Z
FrSky TARANIS Q X7 - https://goo.gl/NLlhjc
FrSky X9D Plus SE - https://goo.gl/KlnCoS
iRangeX IRX4 Plus Multiprotocol Module - https://goo.gl/uF6Co8
FrSky XM  - https://goo.gl/5InfW5
FrSky R-XSR - https://goo.gl/4YM9LH
FrSky XSR - https://goo.gl/00SGNz
Flysky FS-i6 - https://goo.gl/zUEYnB
Turnigy Evolution - https://goo.gl/tzphLP
Fli14 Plus - https://goo.gl/cbWDKs
RunCam Split Mini - https://goo.gl/mjJWvd
RunCam Micro Swift 3 - https://goo.gl/YK9yFr
RunCam Micro Sparrow 2 Pro - https://goo.gl/A3LjgC
RunCam Micro Eagle - https://goo.gl/cqE7t6

Facebook - https://www.facebook.com/kopterheld/
Blog - https://kopterheld.wordpress.com/
Youtube - https://www.youtube.com/kopterheld
RCGroups - https://goo.gl/JYP87D
Posted by kopterheld | Jun 22, 2018 @ 10:15 AM | 5,694 Views
Now a have the Diatone 2018 GT-R90 version 2 with the new F4 8K, TBS on top.
The GT-R90 in version 2 is light and best 2 inch FPV racer drone. It is lighter as the new version GT-M205. Now with clear video and ESC's borad with current sensor on top. A buzzer is included, new proppeller 1940 from Gemfan. All is with betaflight 3.3.0 pre configured for 3S LiPo. For better performance I'm using the DALProp Cyclone Q2035C propeller with 2 inch size. The included buzzer have a board that i have cut up . Now fit the buzzer on top with the receiver antenna fixed with a cable ties. The TBS VTX get very good video quality with the included capacitor on rear. The VTX is very hot so please fly and remove the battery if you landed.

- lighter as GT-M205
- with buzzer
- filtered TBS VTX with Smart audio
- durable bottom frame
- ESC's board with current sensor
- F4 with 8K

- only 1940 propeller not 2 inch
- only a standard CCD camera, not a Runcam Micro Swift or Sparrow 2
- battery strap fit only on big battery, for small 3S too long
- the buzzer have to big board
- battery silicon pad is too thin, screws contacted the battery

Get the Diatone 2018 GT-R90 V2 with here:
10% Coupon: affiliate10%

Link to Banggood

Q2035C propeller:

Link to Banggood

...Continue Reading
Posted by kopterheld | Jun 22, 2018 @ 09:41 AM | 7,536 Views
Now i have the Realacc RX5808 PRO PLUS OSD 5.8G 48CH FPV Receiver with the Achilles Open Source firmware for my Fatshark Dominator HD3 Goggles. A very good diverity module with best firmware, that I see. The Achilles firmware is ease to use and now with OSD on the goggles.
The RX5808 have the Achilles firmware version 1.8. Thedisplay is bigger as the display from the Pro58 and with integrated OSD on the goggles display's.
The new RX5808 PRO PLUS OSD have the same faster STM32 F1 CPU that is working in Eachine Pro58. The old RX5808 PRO PLUS Module have still the slow rate MWC CPU.
My version is without the cover, but I have a 3D printer.

And you can ease flashing or update the module:

1. download achilles Plus for Eachine Pro58, current v1.8 from
2. press the BOOT button and connect the USB cable
3. wait about 3 seconds
4. open Betaflight
5. go to firmware flasher TAB
6. Load firmware (local) button and select the achilles firmware
7. enable 'no boot sequence'
6. Flash firmware and you are ready with the update

Get the RX5808 PRO PLUS OSD with cover here:

Link to Banggood

Here my Flashing video (EN subtitle)
RealAcc RX5808 Pro Plus OSD flashing Achilles firmware mit Betaflight (1 min 51 sec)

Here my review (EN subtitle)
Realacc RX5808 Pro Plus OSD FPV diversity Achilles Firmware Modul (2 min 45 sec)
...Continue Reading
Posted by kopterheld | Jun 21, 2018 @ 04:29 AM | 6,087 Views
This is the Happymodel Snapper7 the slightly larger Tiny Whoop with aluminum propeller protection and especially with brushless motors and 1S LiPo. My quadcopter has a FrSky receiver integrated on the F3 flight controller with telemetry!. The Whoop is available with Flysky or FrSky receiver which transmits all telemetry data to the spark. In the Flysky version, RSSI and the voltage are sent to the remote control. The canopy is made of hard, transparent plastic. The Happymodel motor is a small 0703 motor with 19000KV perfect for the 75mm frame. Optionally there is a plastic frame to make the Tiny Whoop even lighter.

Video –Happymodel Snapper7 1S brushless FPV Tiny Whoop - DE with EN subtitles
Happymodel Snapper7 1S brushless FPV Tiny Whoop 67EUR (5 min 30 sec)

...Continue Reading
Posted by kopterheld | Jun 20, 2018 @ 08:52 AM | 5,815 Views
Now Banggood shipping the Diatone GT-M3 in version 2. With the better F4 FC, TBS VTX is mounted upper with good LC filter and a capacitor on the rear for better FPV video. The amper sensor is now on the new 4in1 ESC's board, not more on the XT30 power connector. It flies very well with many speed. A buzzer is included, that you have to install. The Diatone GT-M3 racer flies very well. He is very fast just the perfect 3 inch FPV Racer. The FPV image is super with no interference and can be configured via the remote control on the OSD display. Finally a good FPV Racer where nothing needs to be rebuilt.

Video –Diatone GT M3 V2 schnellster 3 Zoll FPV Racer DE with EN subtitles
Diatone GT M3 V2 schnellster 3 Zoll FPV Racer (5 min 36 sec)

...Continue Reading
Posted by kopterheld | Jun 18, 2018 @ 03:57 AM | 7,951 Views
The UR65 is thee best 1S brushless Tiny Whoop. The Snapper6 was to heavy. UR65 is lighter and flies longer over 3:30 minutes.
+ very light
+ good CMOS camera
+ good FPV video transmission
+ good battery
+ telemetry on your Flysky and FrSky transmitter
+ long flight time compared to snapper6

Video –Best 1S URUAV UR65 Tiny Whoop DE with EN subtitles
Best 1S URUAV UR65 brushless FPV Tiny Whoop - DE (5 min 55 sec)

...Continue Reading
Posted by kopterheld | Jun 15, 2018 @ 06:31 PM | 5,435 Views
This is the Aurora RC Mini Fight 110 Racer. The 2.5 inch racer is light and flies fast with a 3S Lipo and the 5500KV brushless motors. Good CCD camera ensures a good FPV image. Built-in is a lens with 2.1mm with the 25-200mW video transmitter delivers good pictures.
28A DSHOT600 ESC's board is built in to supply the strong 1106 motors from SunnySky with enough power. Aurora RC Mini is one of the best 2.5 inch FPV racers. Just configure, bind and fly FPV.

Video – Aurora RC Mini Fight 110mm super schneller 2,5 Zoll FPV Racer
Aurora RC Mini Fight 110mm super schneller 2,5 Zoll FPV Racer (5 min 37 sec)

...Continue Reading