Flytrex Sky

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Flytrex Sky
Flytrex sky.png
Battery3S - 4S
Flytrex Sky Weight1250 g(with battery & propellers)
Max Ascent / Descent SpeedAscent: 5m/s
Descent: 3m/s
Max Flight Speed20 m/s
Diagonal Length (With Propellers)710 mm

The world's first cloud connected drone. Powered by the most advanced technology yet super simple to use. Fly for fun, deliver goods with dedicated app and collaborative piloting, powerful platform for hobbyist and more! You can control it via the Flytrex apps, or by a traditional remote control or even by writing your own app and connecting to the drone through our cloud infrastructure. Flytrex has put only the best and most trusted hardware into the Sky - ranging from custom Gens Ace batteries (GrePow) and a state of the art DJI tuned propulsion system, to a uBlox 8 GPS/Glonass receiver.

We are constantly updating this section with more information that we think is relevant, so check back for more updates. If you need any specific support not answered on this page, please reach out to us at (talk) 03:31, 21 January 2016 (PST)

General Features

  • Weight (incl. battery and props)1250 g
  • Diagonal size (motor to motor)470 mm
  • Diagonal size (with props)710 mm
  • Max ascent speed 5 m/s
  • Max descent speed 3 m/s
  • Max speed 20 m/s
  • Max speed (programmed)10 m/s
  • Max altitude above sea level 5000 m
  • Operating temperature 0-45 C
  • GPS High accuracy, uBlox L1 GPS
  • Updates Local/Firmware over the air
  • Battery Support 3S - 4S
  • Max Batteries 2
  • Max hover time 30 min with 3S 7000mAh
  • Max distance 7 Miles / 11 Km
  • Max lift (not usable) 2 Kg / 4.4 Pounds

User Guides

Battery Charger Settings

The battery charger that comes with your Flytrex Sky should be set to LiPro 3A before using. Please change the settings on your charger after receiving it. For more information (including a visual of what it should look like) please check out the Flytrex Sky Charger Settings page.

LED Sequences

For photos, please see the more in-depth Flytrex Sky LED Sequences page.

The Flytrex Sky comes with five (5) LED lights in total: three (3) on the top of the aircraft, and two (2) on the bottom / sides of the aircraft. Please note, that all LED lights you will be seeing will be steady (not flashing.) The LED lights on the sides of the drone indicate whether or not the drone is armed. Usually when the props are working, the LED will be considered “on” and when they are not active, it will be considered “off”. The LED sequences you are looking for are:

  • BLUE: Armed
  • NO-LED (OFF): Not Armed

The LED light in the middle of the drone indicates whether or not the drone is online. The LED sequences you are looking for are:

  • GREEN: Online
  • RED: Not-connected to the cloud

Within 30-50 seconds, you should expect to see a green LED light, when your drone connects online. This of course may vary depending on network connection, GPS reception and location – in addition other factors. When you initially connect your drone with a new SIM card, this process may take longer in order to allow the SIM to be registered.

When the drone boots up, all LED lights will register as blue and green, as the drone connects. After the drone startup is complete, the autopilot will be initiated (after about 10-15 seconds) and it will go into the initial stages of being unarmed (no-LED) and flying (green LED).

Flytrex Sky Firmware Update

You can identify which version of firmware you are using by checking your account settings on your Flytrex account.

Please see below for instructions on how to upgrade the firmware using a USB cable:

1. Download the ZIP from this link and unpack zip file to a new directory: (V30)

The zip contains 4 files.

2. Right click on the "arduino.inf" file and select "install" from the menu - this will install the device driver needed for the USB port.

3. Double click on the LivePlusFirmwareUpdater file and follow instructions. During the firmware upgrade process you will first need to power up the Live (by powering up your quadcopter - which will feed the Live power) and then connect it using a USB cable to your PC. Please remove your SIM card prior to starting this phase.

4. Upon finishing, the LivePlus LED will turn off for 2-3 seconds and then back to red and purple.

5. This means the Firmware has been updated successfully - you can turn power off, insert back your SIM card and turn it on again. If all goes well it should get to green quite fast.

If all goes well, at the end of the process you should have the latest firmware flushed on your device.

Flytrex Sky Custom APN

In order to customize your APN, please follow the instructions below:

1. Download the ZIP from this link and unpack zip file to a new directory:

The zip contains 4 files.

2. Right click on the "arduino.inf" file and select "install" from the menu. Ignore the other files!

3. Download the excebutable here with the APN changer:

If all goes well, you should be able to customize your APN using the above instructions.

Flytrex Sky APM Settings

To modify the APM or mission planner settings of your Flytrex Sky, please download the following:

Flytrex Pilot App

The Flytrex Pilot app replaces the need for a remote controller, giving you the option to fly both manually or in autopilot mode for autonomous flying. A detailed display provides an overview of the Sky’s current status at any given time, with Return to Home and Immediate Landing buttons, making it safer and easier to fly than ever before.

The Pilot app for Android can be downloaded from Google Play. An iOS version is currently in development and will be available shortly.

Users also have the option to install a traditional remote control with the Sky. More details can be found in the R/C Installation Guide.

When launching the Pilot App for the first time you will be asked to sign-in to your Flytrex Account. You can choose to sign-in using one of the available social network: Facebook, Twitter or Google, or, using stand-alone Flytrex Account. Before you can sign in from the Pilot app you first need to create your Flytrex account by visiting our web-site. If you haven't created your Flytrex account yet simply visit our web-site at: and press the SIGN IN link at the top-right corner. Signing-in for the first time from your PC will also create your account. With your account created you can now also sign-in to your Flytrex account using the Pilot app.

Autopilot Flight Screen Review - Before Takeoff

After signing-in to the Pilot you will be presented with the Autopilot Flight screen. This screen let's you pilot the Sky drone in autopilot mode. The illustration below lists the different view components that you'll see on the screen.


1. Settings Button - Press to enter the Pilot App Settings.

2. Aircraft Selection - Opens up the Aircraft Selection dialog and lets you select which aircraft you wish to use. The Aircraft Selection dialog lists all the Sky drones that are linked with your personal Flytrex Account. If you didn't link your Flytrex Sky with your Flytrex account yet you should visit your Flytrex Account Settings -> Devices from your PC to link your Sky with your account first. Once linked with your personal Flytrex Account, your Sky drone will get listed in the app, allowing you to control and fly it using the Pilot app.

3. Calibration Tool - Press and hold this button for two seconds to enter the Calibration Tool. Using this tool you can calibrate your Sky Drone compass and accelerometer. Calibration is done over the Sky's 3G internet link and takes about one minute. Follow the on-screen instructions to complete the compass and accelerometer calibration. We recommend performing a first compass and accelerometer calibration before your first flight and every time flying in a new location, after traveling with the Sky long distances or similar.

4. Manual/Autopilot - Press this to toggle between autopilot and manual flight modes. When switching to manual flight mode you will see the manual flight mode stick controls showing on the screen.

5. The Top Status Bar - The top status bar presents various telemetry details about your current flight status and updates in real time during your flight. The Status Bar display uses either metric or imperial units, depending on the selected units system configured in your Flytrex account on the Flytrex web-site. You can toggle between the two unit systems on your Flytrex Account by visiting the Flytrex web-site. After toggling between the two unit systems, restart the Pilot app for the change to reflect on the app.

5.1. Status Bar -> Flight Ascent - Shows the current flight ascent. This isn't showing the absolute flight altitude, but rather the altitude delta from takeoff point.

5.2. Status Bar -> Distance From Home - Shows the current distance from your takeoff point.

5.3. Status Bar -> Flight Speed - Current flight speed.

5.4. Status Bar -> Flight Status - Shows current aircraft status, such as Low GPS, Connected, Not Connected etc.

5.5. Status Bar -> Link Type - Current active link type, either 3G Link or Transmitter. This indicates what is the currently active control link to the drone. When flying over 3G network control the 3G green LED is ON. If you installed traditional remote control and currently controlling the drone using traditional remote control the Transmitter LED is ON.

5.6. Status Bar -> Battery Voltage - Current battery voltage. The voltage color changes between white, yellow and red, depending on the status of the battery. When yellow you should start planning your return. When marked as red you should try and land quickly.

5.7. Status Bar -> GPS Link - Current GPS link status and quality. The left side number indicates how many sattelites are currently available. The right side indicate the current gps fix type: N/A, 2D or 3D. You will need to have at least 5 sattelites and 3D fix before you can takeoff. If flying in open sky you can expect to reach this minimum GPS level within 20-30 seconds after power up or faster.

6. Takeoff Button - Press and hold the Takeoff Button for one second to initiate takeoff of the Sky drone. Before takeoff the drone systems will perform all neccessery checks and will present a message in case any test failed (for example, compass not calibrated, low GPS or similar). If any error is identified the takeoff will automatically be canceled and a message will be displayed including more information why it was canceled.

7. Map Type - Press to switch map display type between satellite and map view.

Autopilot Flight Screen Review - In Flight

After pressing the takeoff button your Sky drone will takeoff automatically. The screen capture below shows the Autopilot view display during flight. Buttons that offer on-ground functionalities are removed (such as the calibration center, switching between drones etc.) and 4 new inflight buttons are displayed.


1. Pause Flight - Pause the drone flight in current position. When pressed, the drone will abort the current flight path and will hover in place, maintaining the current position and altitude.

2. Set Altitude - Opens a popup window that lets you set new flight altitude. Once confirmed, the drone will change its current flight altitude. The new altitude will then be used as the drone cruising altitude when flying between two waypoints in Autopilot flight.

3. Return To Home - The drone aborts any current flight action and will start flying back to takeoff point automatically. When reaching the takeoff point the drone will automatically land itself.

4. Land In Place - The drone aborts any current flight action and lands in its current position. Use this in case of any trouble to land the drone in its current position.

Autopilot Flight Screen Review - Flying To Waypoint

After takeoff and while your drone is inflight just press-and-hold your finger for one second on any location on the map to mark a new flight target waypoint. The Sky drone will then start flying towards the new location you just marked. The Sky will fly to the new target mark using the current flight altitude configured.

If you change the flight altitude while the drone is currently flying to a target waypoint you marked, the Sky will pause the flight in the current location, adopt any altitude change either by flying higher or lower until reaching the newly configured altitude, and will then continue flying to the new marked waypoint.

If you press-and-hold the map to mark a new target waypoint while the Sky dorne is currently flying to a different target waypoint, it will abort its flight to the previous waypoint and will start flying towards the new marked waypoint.

Manual Flight Screen Review

When switching to manual flight mode the two control sticks are displayed, allowing you to fly your Sky drone in a similar manner to flying with a traditional RC controller. Similar to the autopilot flight mode, you will first need to press the Takeoff button to take off and start the flight. Once the Sky drone is in the air use the on-screen sticks to control the drone in the air and fly manually.


The sticks are organized following the common "Mode 2" RC transmitter layout. That is:

  • Right side stick, horizontal axis controls the flight roll.
  • Right side stick, vertical axis controls the flight pitch.
  • Left side stick, horizontal axis controls the flight yaw.
  • Left side stick, vertical axis controls the flight throttle - Move the stick upwards to increase engines throttle and climb flight altitude, or move stick down to decrease engines speed and decent flight altitude.

Aircraft Selection Dialog

After signing-in for the first time, you will need to select the aircraft you wish to control with the Pilot app. Pressing the Aircraft Selection button will open the Aircraft Selection dialog, as seen in the screen capture below.


This dialog lists all the Sky drones you linked with your Flytrex account. If you need to link your Sky drone with your account for the first time, visit our web-site at, and navigate to Account Settings -> Devices to link a new Sky drone with your account. Each Sky drone listed in the dialog will display the name you provided it when linking it with your account, or, it will be listed as Untitled Aircraft if you didn't provide a custom name to it. Adding a custom name to your Sky drone when linking it makes it easier to identify it if using multiple Sky drones. Below the name of each Sky drone you will see the Sky ID of each device. This is the unique ID embedded in your Sky system on the factory level.

In the Aircraft Selection dialog you will see a green LED on the right side if the current Sky drone is connected and online. You can also select aircraft that aren't online at the moment, but you won't be able to control or fly them until they are connected.

Select a Sky drone from the list or press anywhere outside the dialog to close it.

Settings Dialog

Pressing the Settings button opens up the app settings section as seen in the screen capture below.


Available settings:

1. Takeoff Altitude - Controls the altitude the Sky drone will climb to when pressing the Take Off button to initiate a new flight.

2. Return Home Altitude - Controls the cruising altitude the Sky drone will use when entering return-to-home flight mode.

3. Sign Out - Sign out from your current account. After signing out you will need to sign in back again to continue using the Pilot app. Use this if you wish to sign out or to sign in with a different Flytrex account.

Flytrex Messenger App

The world's first real-life messaging app that allows you to both send and request items using your Flytrex Sky. Simply choose a contact who you would like to receive or deliver an item to, and then mark a landing spot for the Sky. Basic messenger technology allows you to write short notes between app users. For more information, please take a look at the more detailed Flytrex Messenger App page.

Once the delivery has been confirmed within a two-minute time limit, the drone will automatically take-off to the destination. During flight, both parties can review the Sky status and telemetry at all time.

Flytrex Sky API

Coming soon!

Suggested Accessories


Extra 4S 4000mAh batteries are for sale on the Flytrex store. For more powerful batteries, we recommend a 4S 8000mAh 8C unit.

Tablet or Phone Holder

While the Sky users also have the option to install a traditional remote control with the Sky, we find that many wish to combine the feel of an r/c unit with the convenience of a mobile app. For this, we offer both a tablet and phone holder for users who wish to affix their device to a traditional-remote control set-up. Both can be found on our website on the Flytrex store.

Extra Props

Extra props can be purchased on the Flytrex store, and each base kit comes with four propellers. If using the Sky for making deliveries, we suggest that you invest in propellers with painted tips, to ensure the safety of all persons interacting with the aircraft.

Landing Gear

If one wishes to purchase landing gear for the Flytrex Sky, Flytrex recommends landing gear for DJI F450/F550.

Frequently Asked Questions

1. Can I fly Flytrex Sky with a standard remote control and receiver?

Yes. By default, the Flytrex Sky is able to utilize its one-of-a-kind 3G based control using a mobile device (Android or iOS). In addition, the Sky supports all standard remote control systems such as Futaba, Multiplex, Spectrum etc. The Sky is powered by an open source APM:Copter flight controller which allows the user to install any receiver/transmitter system as with any other multirotor. After installing a receiver/transmitter system the Sky offers a unique dual-control mode that allows switching control between range-free 3G control (via mobile) and receiver/transmitter system (for close-range flying). Switching control-mode is done via the mobile app. If you plan on adding a receiver/transmitter to your Sky we recommend ordering a phone/tablet holder for easy access and use of your mobile while flying.

Check out our R/C Installation Guide page for more information.

2. What types of LiPo batteries are supported by the Flytrex Sky?

Flytrex Sky comes equipped with a 4S Lithium Polymer (LiPo) 4200mAh battery, but supports all types of S3 and S4 LiPo batteries. In addition, as part of the modular design, you can further customize Flytrex Sky by adding a second battery. The dual battery mode will enable you to fly further and take your Flytrex Sky on longer missions. We recommend using a 4S LiPo for delivery missions.

3. Can I customize my Flytrex Sky?

Yes. Flytrex Sky comes ready-to-fly (RTF). However, the main platform is modular and enables you to add components and modify your Sky to your own unique piloting style and taste. The modular frame also enables you to upgrade specific components without replacing the whole aircraft such as motors, FPV, GoPro and more.

4. Are my flights automatically logged onto my Flytrex account?

Yes. Flytrex Sky is seamlessly integrated into the Flytrex web-based platform. This ensures that all flights are automatically uploaded to your private profile using the latest Flytrex Live technology. Being part of the web-based Flytrex platform opens up optional gaming features: compete with other pilots world-wide, track personal records and earn badges for your piloting achievements. These can be easily disabled by defaulting your flights as private, depending on your personal preference.

5. What is the flight range of the Flytrex Sky?

The flight range of the Sky is limited only by the battery power and mobile reception. Since the Sky uses a 3G based communication system, there is no actual distance limit to how far it can be controlled nor is it limited in urban places. As long as there’s cellular coverage and enough battery power, you can fly the Sky. Please review local regulations before flying long distance missions and always fly responsibly.

6. How can I recover from a crash?

The Flytrex Sky is the first multirotor that comes with a powerful 3G tracker built-in. The Sky's built-in tracker maintains a live telemetry connection from the moment you take off and until landing that safely stores your flight data at any given time. In the event of a crash you can use the Flytrex powerful Last Seen tool that will help you locate and recover your Sky and any additional equipment, regardless to how far you were flying. The Flytrex Last Seen tool is accessible via our web-site or mobile apps and gives you information of the exact location where your multirotor was last seen, when was the last successful data transmission received from it, a Google map displays where it is currently located and more. Using this information you can easily find and rescue your multirotor.

7. How can I deliver items using the Sky?

The Flytrex Sky is the world's first consumer drone that enables delivery of small items between two people. To start delivering items using Flytrex Sky download the Flytrex Messenger app available for Android and iOS. Launch the Messenger app and follow the steps on the app to start your first delivery. Delivering items using the Messenger app is straightforward and can be completed in a few single clicks. Upon delivery arrival the receiving party gains control over the drone and can fine-tune its flight during landing.

The Sky frame includes 8 hooks, 4 at each side of the frame, and comes together with 2 packs of special bands that can be used to mount a verity of different items for delivery. Flytrex Sky is designed to carry small and lightweight parcels. We recommend experimenting with different items at first and encourage checking your local regulations before starting your first delivery.

8. How is the Flytrex Sky operated?

The default control of the Flytrex Sky is done using the mobile app available for android and iOS devices. Using the app, you can easily control your Sky even if you have little or no experience piloting consumer drones. The Sky can take off and land autonomously and can be instructed to return home and land at a click of a button. Flytrex Sky can be controlled using two different apps, each designed for a different task.

Experienced pilots and drone enthusiasts can also install a third-party receiver/transmitter on the Sky and control it in dual-mode, switching between the remote controller and the app over 3G to your convenience.

9. Is the Sky water/weather proof?

No, the Sky is not resistant to water or rain. If you fly in the rain, you risk damage to some of the components. We also do not recommend flying in winds above 20 km/h.

10. I don’t know how to fly a drone, is it simple?

The Sky’s control app interface makes flying it as easy as pointing to the place on the map where you would like your Sky to go to. Pilots with no experience can fly the Sky easily. The Sky can take off and land autonomously and can be instructed to return home and land at a click of a button. The Sky offers a great platform to beginner to grow with easy-to-use piloting experience and expandable options as you get more experienced and looking to enhance your piloting experience.

11. How much can it carry? How far can it take something?

As with any aircraft, the weight of the payload will determine the range the Sky will be able to carry it. Our recommendation would be to not carry more than (max weight) with it, as the battery consumption will be inefficient. In example, if you wanted to deliver a package to a friend who lives 2 miles from your house, the maximum weight of your package should be (max weight for 2 mile delivery).

12. Can I connect my GoPro?

Yes. The Sky comes GoPro ready. The Sky’s modular design allows the user to add any type of camera and gimbal within the weight limitations.

13. Can I fly with FPV (First Person View) equipment?

Yes. If you want to fly your Sky in FPV, then you are required to add an external remote controller. After that, you are free to fly your Sky in FPV just as you would any other custom multirotor. For a guide on how to install a remote controller on the Flytrex Sky please click view our R/C Installation Guide.

14. Can I swap the battery?

Yes. The battery on the Sky is easily detachable, which allows you to fly continuously just by changing one battery with the other.

15. Does the Flytrex Sky have collision avoidance features?

The Sky does not have built in collision avoidance. We advise to always fly safely in open areas where there is no danger of collision, while keeping your aircraft above the height of nearby trees, structures and other obstacles.

16. What do I get when I order the Sky?

The Sky itself will require no assembly apart from attaching the propellers, as it comes in a ready-to-fly form. You will receive a Flytrex Sky, complete with the latest Flytrex Live device, a 4S LiPo 4200 mAh battery, charger and payload loops.

17. Where can I get replacement part for the Sky?

The basic parts for the Sky (such as frame, motors, propellers, flight controller, etc.) are standard issue, replacements can be easily found through the internet or in your local hobby shop as well as in our online shop. This means that you do not need to spend loads on one-of-a-kind replacement parts, and that you can switch parts between different Sky's and even different multirotors.

18. How do I set up my Flytrex Sky?

  • Charge the LiPo battery (LiPo batteries are best stored and shipped half-charged).
  • Connect the propellers.
  • Insert a 3G SIM card. You can find more details about supported SIM cards here.
  • Download and install the Flytrex Pilot app.
  • Register your Sky to your Flytrex profile.
  • You are ready to fly!

For more information, please be sure to take a look at our Quick Start Guide.

19. How do I know how much flight time/battery power I have left?

On the control app in your phone/tablet, you will receive a constant feedback of your battery level, as well as distance from the pilot and an indication on how many GPS satellite signals are received at any given moment.

20. What happens if I suddenly lose reception and I don’t know where my Sky is?

If for any reason, you lose contact or reception, your Flytrex Sky will return to the takeoff point and land safely.

21. What happens if the Sky runs out of power whilst in midair?

When the Sky‘s power starts to run out, you will receive a warning indicating the low battery levels. If the battery reaches critical level (about 10%), the Sky will initiate an automated landing procedure in its current location.

22. What is the Sky’s flight time?

The Sky can stay in the air for 32 minutes using a 7000mAh 3S battery.

23. Do I need a SIM Card? What type?

The Sky uses 3G GSM data micro-SIM for its control and live telemetry stream. You can order such micro-SIM from most local mobile carriers. When ordering, make sure the SIM card is designed for use with GSM network. The Sky uses advanced data compression algorithms that keeps data consumption to a minimum, so data costs remains very low even for those who fly daily. For example, flying 20 hours should consume 80 MB of data. We're always looking for contributors to our Mobile Networks page, so please chime in if you have some feedback about the best mobile networks to use where you fly.

24. Is it dangerous? Can I cut my hand?

Yes! As any multirotor aircraft, the Sky can injure if used incorrectly or un-responsibly. While the propellers are spinning, keep hands away, as they have the potential to cut and wound.

25. Can I share my flights with others?

For each mission you upload you can set its privacy level: Public or Private. Public missions are shared across the Flytrex site and are visible to all other pilots and site visitors. Your friends can follow you on the Flytrex website and receive instant notifications every time you’re in the air. Setting a mission as private will keep it that way. Private missions are only visible to you, on your personal Profile tab. Private missions are not shown in any of the public views, the Explore and Globe views, nor is it listed in any of the badge statistics in the Badges view.