Diff or Dump about Betaflight, can you tell it apart them?

A new command “diff” was introduced back in Betaflight 3.0, it’s much better than using “dump” for troubleshoot and managing parameter in CLI. Still some people are not aware of it, so let’s mention it for more details。

As you all know, Betaflight ‘diff ‘ and ‘diff all’ commands greatly simplify configuration management by only displaying CLI values that are changed.

What Does Dump Do?

‘dump’ simply prints all the configurable settings in a pastable form(over 300 lines long).

What Does Diff Do? 

There are 2 command variants: “diff” and “diff all”.

diff” prints only the paremeters in the current profile and current rate profiles that are changed from the default. By adding a command argument “showdefaults”(entering “diff showdefaults” in CLI), the original values are also displayed in a comment line (beginning with a #) for all changed values.

diff all” displays only the values in all profiles and rate profiles that are different from the default values. By adding a command argument “showdefaults”, the original values are also displayed in a comment  line (beginning with a #) for all changed values.
















Why use Diff over Dump?

When using diff, you no longer need to go over all the settings, only the ones that different from defaults. This largely simplifies paremeter/feature management and makes trouble-shooting easier.

This also works slightly better for firmware updates, where you need to make a setting backup, you can use”diff all showdefaults”, the list is likely to be much shorter.

However this feature is only available since Betaflitht V3.0,  won’t work for those are still using older firmware before that.

We are not saying we should replace dump with diff, it will still be useful in some cases. But unless you have a good reason to use dump, try diff.


Top 5 best ESCs and top 5 best flight controllers list by Drone Insider. Which do you prefer ?

New year 2017 has begun. The yearly top 5 best ESCs and flight controllers list has updated. This list was fully concluded by professional pilots’ experiences and their objective performance.

Maybe you won’t feel strange to them. Curious about what are the best popular and whether the ESC or flight controller you own is involved in this list?

Let’s look into the list together.

Top 5 best ESCs 

Every half year Drone Insider announce the top 5 list on ESC, flight controller, motor or frame quads which turn to be the most important component for drones. During the past year 2016, drone market has experienced many changes with drone companies developing new drone products thus pushing this industry go ahead.

Top 5 best ESCs listed by Drone Insider are as follows:

  • Kiss 24A Race Edition

It has been twice for Kiss Race Edition scrapping to the top of this list. With new features such as Oneshot42(a superfast version of Oneshot125) and onewire telemetry, it enables you to get information on current draw from individual ESC, which can then be sent to your Flight Controller(currently only the KISS FC can receive the telemetry data, but since the protocol is open source we could see it appearing in Cleanflight sometime soon).


  • Spedix 30a ESC HV 3-6s DSHOT

Smaller, reliable and affordable! These Spedix HV 30a ESCs are not onlf fast and responsive thanks to the silky smooth of BLHeli S. Smaller than many of the other ESCs on the market, this ESC will not only help you shave those precious ‘g’ s, but it also supports up to a 6S battery and run the latest DShot 600 firmware.


  • DYS XSD30A

Another BLHeli_S ESC, DYS XSD30A, the successor the the highly commendable XS series of DYS ESCs. The key upgrade over the precious XS30A is that the XSD30A are able to run Dshot straight out of the box, perfect for those who want to try the digital motor protocol.


 Special Sale now, only needs $11.97(30% off)

  • T-Motor F30A FPV 30A

Known for making some of the highest quality products, T-Motor released such BLHeli_S Dshot capable ESCs. It gives you the option to shave off a few grams if you won’t try any crazy 6S action. Like many of the ESCs on this list, they have solder pads so don’t have to desolder those silly presoldered wires.


  • Sunrise Cicada 30A BLheli S

Proven with a variety of set ups and can take 8k gyro without desyncing. If you are looking for some reliable BLHeli S ESCs these would be a good bet, they are starting to prove their worth, helping to make BLHeli S and new industry standard.


We will post the other top 5 best flight controllers, motors and frame quads list for you at later time, please continue to focus on us.


Rescue-2 Gimbal with built-in 10x zoom camera, unique design for your flying.

Good news for you here!

Rescue-2 gimbal is now taking pre-order!


From the appearance, it looks like an egg. We also orally called it” egg gimbal”.

Versatile tool for certain rescue and search missions

As the second generaton of Rescue series,  Rescue-2 gimbal with built-in 10x zoom HD camera, can be widely used in various rescue and search missions, including mountain rescue, ground search and rescue, urban search and rescue, combat or air-sea search and rescue.



 You may have a question like this: Is there any difference from Rescue-1?

  • One key to lock, shoot and return to center

One big difference in Rescue-2 gimbal: one key to lock, shoot and return to center. It may greatly faciliate your operation and bring you comfortable experience.


  • 1035 wide range lens

Rescue-2 gimbal adopt 1035 lens, bringing users wider range, more clear video. You don’t need to worry about the limited range in aerial photograph.


  • No temperature drift

Another big difference lies in the absense of temperature drift. Temperature drift is the change of  semiconductor parameter caused by temperature change. Rescue-2 gimbal contributes to protect your camera from ultra-low temperature condition in special search and rescue missions. In cold weather, built-in10x zoom camera in Rescue-2 may automatically heat itself in spite of temperature drift.


What’s more, due to the size, convenience and the depoly time, Rescue-2 gimbal is a good choice for particular rescue missions. The combination of transmitter and receivers can give you a live view back at the mission base and alow for coordinating crews in real time giving an effective means for obtainning the best possible outcome.



  • Operating temperature: lowest to 30degree below zero. 

Rescue-2 gimbal turns to be more resistent to cold temperature. We have made many experiments putting this egg gimbal into an refrigerator or other cold container or outdoor coldy weather. To our surprise the gimbal turn to work very well.

More working characteristics  are as follows or you can check it at FPVMODEL website.




Something important for you to choose motor and propeller for your quadcopter

For many professional pilots, they tend to build their own racing weapons, however how to choose the best combo between motors and propellers for your lovely quadcopter is surely the most important.

From where to start?

Motor size comes to be the first!

To begin with, you need to answer the following 2 questions:

  • What’s your quadcopter’s planned total weight ?

Since you have’t start to build, when you consider the total weight, you need to involve the whole components: the frame, Flight Controller, PDB, wires, motors, battery, HD camera and gimbals, or something others. So you need to make an estimation about the total weight and also need to update the number when you have new idea about adding different components.

  • What’s the size of your frame?

By knowing the size of the frame, you should know the maximum propeller size that can be used.

Motor size and KV

Brushless motors in RC is normally indicated by a 4-digit number – AABB. “AA” being the stator width, and “BB” being the stator height. Basically, the wider and taller the motor is, the more torque it can generate.


FPVMODEL MC 4014 340 KV brushless motor

KV is another important parameter, it’s the theoretical increase of motor RPM (rotation per minute) when voltage go up by 1 volt without load. For example, when powering a 2300KV motors with a 3S LiPo battery (12.6V), the motor would spin at about 28980 RPM. This is just an estimation by the way.

But once you mounted a propeller on the motor, the RPM won’t be that high due to resistance. Higher KV motors would attempt to spin the propeller faster, but lower KV motors normally generate higher torque. That’s why we tend to see larger props are paired with low KV motors, and smaller props with high KV motors.

So when choosing motor and propeller it is important to find a balance between RPM and torque.


N and P

You might sometimes see something like “12N14P”. The number before the letter N means the number of electromagnets in stator, and the number before P means the number of permanent magnets in the motor.

Most motors have the same 12N14P configuration, some lower KV motors would have more electromagnets and permanent magnets to help increase torque more efficiently (and thus more expensive). While it’s good to know what this is, it’s not an essential piece of information when picking motors.

Frame Size => Prop Size => Motor Size and KV

Most of the times by knowing frame size, we can estimate what sort of motor we should use. This is because frame size limits props size, and prop size limits motor size and KV. But anyway, always check motor thrust test data to verify the current draw does not exceed safety rating of the motor, when pairing the propellers you want to run.

Comparing between motors

Once you have decided on the size and KV of the motors, you may already have many motors to choose. To pick the best motor for your application, you should consider the following factors:

  • Thrust
  • Current Draw
  • Efficiency
  • Weight – Moment of Inertia

Specification about FPVMODEL MC4014 340KV bruthless motor


Higher thrust gives you top speed, but you also need to consider efficiency.

Higher thrust gives you top speed, but you also need to look at efficiency, making sure it’s not using a ridiculous amount of power that is exceed what your hardware can support.

Your choice of motor and propeller may affect your choice of batteries too. If your quad could draw a large amount of current at full throttle, youre battery’s max discharge rate has to be able to keep up in order to provide the power, as well as they don’t overheat and go buff.

One thing that oftern get overlooked is motor weight, it is more important in racing drones. It does’t only affect the total weight of your quad and thrust to weight ratio, it also affects the moment of inertia of your quad.

When your quad is doing flips and rolls for example, it takes time to pikde up the angular acceleration and eventually move to the desired position. If your motors are heavy, it will take the quad longer to do this, and therefore feels less responsive.

Choosing Propellers 

Propellers generate thrust by spinning and moving air. The more air it can move, the more thrust it will generate.


8 pairs 6×3 6030 Inch Electric Propeller CW/CCW For Multirotor

Many pilots have different choice as to the material, shape, size and the number of blades requirements of propellers.


With a well balanced motor and propeller combination, your quadcopter should achieve great efficiency, not only improve battery life time, but also allows great user con,trol experience.


Top 10 golden pilots in 2016

Last week on January 5th, the top 10 golden pilots in the year of 2016 haved been selected by China Drone Racing League in Shenzhen.


Many pilots signed up and participated in this drone achievement. Rank in participating games,  race size and their scores are the most important factors in judging their comprehensive ability.

Luckily, the top 10 pilots are awarded their medals and prizes. Maybe you won’t feel strange to them, like HuangMimi, LiKunhuang, ZhongWeihua,they stand for the top level  in China drone racing.


What’s more excited, FPVMODEL pilot KaKei was awarded one of the top 10 pilots. Kakei(Chinese name:LiangJiaqi) , the third in the left hand of the group photo, has attended many race games all over the 2016, such as Drone Racing China 2016 on June 17 -19th,  Aisa Cup Shanghai on July 23-24th, 3DX and AFA on October 28-30th and so on.



In the new year 2017, FPVMODEL will be commited to more racing games and tries to promote drone race competitions throughout China.

Congratulations to KaKei and hope you make bigger achievement in later racing games during the new year of 2017.

The second batch pre-order for Betaflight Flight Controller is coming

Several days ago we took pre-orders for Betaflight Flight Controller. Maybe most of you are the lucky ones and have already received the first batch flight controllers.


For others don’t need to worry. Now the second batch pre-orders is on sale, take it through fpvmodel worldwide website. If you are American customers, you can directly take orders through our US warehouse website: http://us.fpvmodel.com/ and will be directly sent to you from here.

BetaflightF3 is the flight controller designed to use every possible feature of betaflight. More than the last half year has been spent in development. Boris B has worked with us to go over features and design aspects to help give us insight into what betaflight users want/need.


Choosing your power supply for video is relatively simple. Betaflight FC has two options, 5v and battery voltage. Choose your camera voltage by jumping RAM with either the 5V solder section or the Vbat solder section. (its recommended to use Vbat, Most cameras and Video transmitters can run off battery voltage) If using 5v it is recommeded to only power your camera and get the power for Vtx from another source.






Useful tool : Motor Grip Plier for RC motors

Here comes FPVMODEL new tool for your RC motors: an grip plier.


It is designed to make it easier for you to make some changes for your props. The FPVMODEL Motor Grip Pliers are suitable for 2204, 2205, 2206, 1306, 1406 and 1806 sized motors, also the antennas and m5 motor lock nuts.



You don’t need to worry about any damage to your motors, props and locknuts when removing them.

Item Name: Motor Grip Pliers
Maximum opening: 45mm
Weight: 56g

Package Included:
1 Motor Grip Pliers
5 sets of rubber tape

How to use it for your motor changing?

Or check the following website: http://www.fpvmodel.com/fpvmodel-motor-grip-pliers-for-rc-models_g1200.html


A sorting bin: good tool for your workbench quad building and removing

Did you ever have this experience: getting bored about the garbage after your quad building? Now we FPVMODEL have put out this useful tool specially designed for workbench use. It is great helpful for you to  sort and collect your building parts.



No other need to worry about the mess on your workbench and  any loss of these parts.

What’more,  it is quite easy to use it. You just need to put and pin it under your workbench, then you can easily and quickly put all parts and tools into this sorting bin.


Helpful and Usuful, right?

To be yours: http://www.fpvmodel.com/utensil-sorting-bin-for-workbench-use_g1237.html


Betaflight F3 Flight Controller

Betaflight F3 Flight Controller is taking pre-order.

Betaflight F3 Flight Controller has been put on pre-order for several days.

It’s the  flight controller designed to use every possible feature of betaflight.  The development procedure has lasted more than the past half year. Boris B has worked with us to go over features and design aspects to help give us insight into what betaflight users want/need.

The team at betaflight have been hard at work developing DSHOT and this board is also compatible with the latest release. But we didn’t stop there, this board also features a micro adapter to accept TF cards for those of you that like to follow up your flights with reviewing black box logging…we think we know of at least one guy that will like that.

The first batch of BetaflightF3 is expected to sell out fast so in order to test the demand and set manufacturing goals before Chinese new year hits  and expect the first batch to arrive by Tuesday of next week, Dec. 20th.

Thanks for your patient waiting, and we team promise you good experience.

For more product promotion informaton, check http://www.fpvmodel.com/

FPVMODEL Rescue-1 Gimbal for 10X Zoom Camera.

10X Zoom gimbal, intended for search and rescue missions, bring you different experience.

For aerial photograhy lovers, a suitable gimbal is rather important. Gimbals help make your camera keep steady avoiding shaking while taking aerial photos using craft.

Today I am going to introduce you one special gimbal, for it is especially designed for Rescue Missions. That’s RESCUE-1 GIMBAL, for 10X Zoom Camera.


Rescue-1 10-X Gimbal is a culmination of over a year and halfs worth of desiging, development and testing,  intended for Search and Rescue missions.

This is another tool that can be added to your arsenal of equipment to aid you in those times when someone may be in imminent danger or distress. The general field of search and rescue has many different sub-fields typically determined by the type of terrain the search is conducted over.

This can include mountain rescue, ground search and rescue, urban search and rescue, combat search and rescue, and air-sea search and rescue.


What’more, Rescue-1 is also a very versatile tool that can be applied to the vast majority of search and rescue missions due to its size, convenience, and quick deploy time. Using this 10x zoom camera and gimbal will give you a stable eye in the sky that can be controlled via drone pilot or a secondary individual allowing for an overhead view that can cover a large amount of ground quickly and effectively.


The 10x zoom function will allow you to remain at a distance yet zoom closely in on anything that requires your attention. The combined use of video transmitters and receivers will give you a live view back at the mission base and allow for coordinating crews in real time giving an effective means for obtaining the best possible outcome.

There are two options for you: Gimbal only (without 10X Zoom Camera)and  Gimbal with 10X Zoom Camera.

1、Gimbal only


2、Gimbal with 10X Zoom Camera

Electrical @ Characteristics

  • Working Current: Static
  • Current:220mA(@12V)
  • Dynamic current:450mA(@12V)
  • Input voltage: 3S(11.1V)
  • Operating Temperature:-10°C – 50°C
  • Dimensions: L90 x W110 x H115(mm)
  • Weight: 280grams (without camera)

Working Performance

  • Pitching Angle motion ranges: ±180°
  • Roll axis control:±45°
  • Pan axis control: ±300°rotation
  • Angle amount of jitter: pitch and roll directions:±0.02°
  • Horizontal Direction:±0.03°

If you need to make certain special rescue missions, you may not miss this one gimbal for it’s special function.

If you are aerial photograph lover, you may also have a try at this 10X Zoom Gimbal for you 10X Zoom Camera, it must bring you more convenience and different visual experience.