Swellpro Spry+ User manual

User Manual V1.1

Check www.swellpro.com for

the latest version of this manual

and ﬁrmware updates for your

drone.

PIONEERS OF THE WATERPROOF DRONE

The world's only waterproof sport drone.

Thank you for purchasing the SwellPro Spry+. We have designed and manufactured the

Spry+ to the highest quality standards. Like any marine equipment, long-life and trouble-free

operation relies on due care and maintenance. With proper care and maintenance you

should enjoy your drone for many years. After ﬂying in salt or contaminated water, always

thoroughly rinse and dry your Spry+ in fresh water immediately after use or before salt and

sediment can dry inside moving parts.

It is important to familiarize yourself with the features of this unique drone by carefully

studying this manual and particularly the priority sections indicated in the Table of Contents.

Before the ﬁrst use, it is recommended to watch tutorial videos listed on oﬃcial website or

youtube channel.

Check www.swellpro.com for the latest manuals, software and tips. Refer to the Version

Information section at the end of this manual, which details additions and corrections to this

manual.

Other Information

Visit and subscribe to SwellPro’s YouTube channel for instructional videos and product

information.

www.facebook.com/swellpro/

Contents

Product Overview

Drone Illustration

Remote Controller Illustration

FPV Screen OSD Illustration

Flight Modes

Battery Installation

Low Battery Alarm

Low temperature precautions

Flight

Basic knowledge before ﬂy

Preparation Before your First Flight (or in a new location)

Gyroscope Calibration

Compass Calibration

Remote Controller

Battery

Product Overview

Charging Remote Controller Battery

Low Battery Alarm

Remote Controller Operation

Remote Controller Pairing

Camera

Camera Settings and Use

Camera Indicator

Drone Indication Lights

Propellers

Micro SD Card Installation

Return Home

IMU calibration

Starting / Stopping the Motors

Basic Flight Steps

Water Take-o and Landing

Take-o and Landing from a Boat

APP Control

Tap to Fly

Flight Path Setting

Speciﬁcations

Warranty & After Sale Service

Flight Safety

Battery Related

Maintenance

Trouble Shooting

Disclaimer and Warning

Appendix

Version Information

1. The Spry+ fuselage and remote controller are waterproof and suitable for all-weather,

all-terrain cruising.

2. The aerodynamic shape of the whole drone is designed to effectively minimize wind

resistance and improve flight speed.

3. Spry+'s camera uses a Sony 1 / 2.3 inch CMOS sensor matched to a lens that minimizes

fisheye distortion to obtain natural-looking scenes. Use your Spry+ to record stunning 4K

videos at 30 frames per second or take high-definition 12MP photos.

4. Adjustable lens angle: The Spry+’s camera can be tilted up and down with the remote

controller to frame your videos better.

5. Optional electronic stabilization system helps ensure smoother footage.

6. The Spry+ 4K waterproof camera is sealed in an optical glass dome to protect the camera

lens from damage. The specially designed dome has high transparency without distortion and

also helps avoid excessive glare.

7. Intelligent Follow Me: The Spry+ uses a built-in motion algorithm to follow the position of the

remote controller. The follow me functions supports leading or following camera positions.

8. Target orbit: the Spry+ can perform an autonomous orbit around a moving object.

9. Auto return: The Spry+ constantly monitors the location of the remote controller so that it can

return to the last-known position of the pilot in case of radio interference or a return-home

command.

10. APP smart control: One Key Take Off | Point to Fly | Orbit Fly | Auto Return | Flight Path

Settings

11. Compact, portable and easy to use.

Spry+ is the first-ever compact & portable waterproof sports drone. Its fully waterproof fuselage

and built-in camera helps you capture photos and 4K/30fps video in all weather conditions. The

competitive power system allows you to experience high-speed flight over water - enjoying true

freedom. This section introduces the various drone functions, how to assemble the drone, the

various part names of the drone, and its remote controller.

Product Overview

Highlighted Features

[01] Camera Dome

[02] Rubber Feet

[03] Drone Nose Lights

[04] CCW Propeller

[05] CCW Motor

[06] CCW Propeller Nut

[07] Drone Status Lights

[08] CW Motor

[09] CW Propeller Nut

[10] CW Propeller

[11] Power Button

[12] GPS Pod

Drone Illustration

[01]

[03]

[06]

[04]

[05]

[07]

[08]

[09]

[10]

[12]

[11]

[02]

[04]

[06]

[14]

[13]

[15]

[05]

[07]

[02]

[03]

[08]

[10]

[09]

[13] Waterproof Membrane

[14] Battery Cover

[15] Battery Cover Lock

[01] 2.4G Remote Antenna

For drone control signal

[02] Return-Home Switch

Commands the drone

to return automatically

[03] Camera Tilt Down Button

Tilts the camera down

[04] Follow Me Button

Controls the drone to follow

the remote controller

[05] Power Button + Controller

Status Light

Press and hold to power on

the remote controller.

The button will glow to indicate

remote controller status.

[06] Left Joystick

Control the drone’s ascent (up),

descent (down) and/or to rotate

the aircraft nose left or right.

[07] FPV Channel Button

Press and hold to search for the

best FPV channel

[08] FPV Screen

Displays ﬂight data and FPV video

[09] Hanger Ring

Attachment point for neck

lanyard

[10]

[11] Camera Button

Used for controlling Video

and Photo functions.

[12] Camera Up Button

Tilts the camera up

[13] Flight Mode Switch

GPS / Circle / ATTI

[14] 5.8G FPV Antenna

Receives FPV live video

5.8GHz

[15] USB Port/Vent plug

For charging the remote

controller battery and

performing ﬁrmware

upgrades

Remote Controller Illustration

[01]

[03]

[02]

[04]

[05]

[06]

[07]

[15]

[09]

[08]

[10]

[11]

[12]

[13]

[14]

Before powering on the controller, please be sure to put all the toggle switches on the controller in the up

position.

Note: The default remote control conﬁguration uses a left hand throttle. If you prefer to have right hand throttle,

please consult your local dealer.

Right joystick

Controls the drone direction

of ﬂight

As the remote controller is completely sealed, the air inside is subject to changes in pressure and temperature.

If the rubber joystick seals balloon or suck in, simply equalize the pressure inside the remote by brieﬂy

opening the USB charge plug.

The Spry+ utilizes a brand new ﬂight control system which incorporates 6 of the best ﬂight modes.

GPS mode: This mode uses the GPS module to achieve accurate and stabilized hovering, braking, intelligent

ﬂight, intelligent return and other intelligent ﬂight mode functions. In this mode, maximum ﬂight speed is

10m/s, maximum ascent speed is 3m/s, and maximum descent speed is 3m/s.

Circle mode: The drone moves 10m from its current location and begins to circle with a radius of 10m with

the nose always facing the origin. During circling, the right-hand joystick controls the speed and size of the

orbit. Push up to increase the radius of the orbit, push down to reduce the radius of the circle (minimum

radius 10m), push the joystick left to speed up the orbit or push it right to slow down the orbit. If you

continue to reduce the orbit speed, the drone will change the direction of orbit and start to increase the

orbit speed again.

Flight Modes

P +02

R -01

:GPS

:049

:096

332

03.90

0000

+0.0

00.0

00.00

12.3

FPV Screen OSD Illustration

Display Interface

If [04] and [09] both point in the same direction, the drone is ﬂying towards to remote controller/home

point.

[01] GPS satellites tracked

[02] Angle of aircraft pitch

[03] Angle of aircraft roll

[04] Flight direction

[05] Flight speed

[06] Flight time

[07] Drone battery voltage

[08] Distance from the take oﬀ point

[09] Home point direction relative to drone

[10] Vertical height

[11] Vertical speed

[12] Remote controller signal strength

[13] Current throttle

[14] Flight mode

[15] Compass bearing

[16] Flight attitude

[01]

[04]

[05]

[06]

[07] [10]

[11]

[12]

[13]

[14]

[15]

[9]

[8]

[16]

[03]

[02]

ATTI mode: This is a more advanced ﬂight mode which does not use the GPS positioning function but still

maintains altitude stabilization. The drone will drift with any wind when hovering and will not brake when

the joysticks are released.

Follow Me: The remote controller has an inbuilt GPS module, and the Follow Me mode is based on the

relative position of this GPS module to the drone. The maximum Follow Me speed is 10 m/s (36 KM/H).

Auto-Return: The aircraft has a one-key return function as well as an auto-return if radio contact with the

remote controller is lost. When the remote control and GPS signal are good, the aircraft can be commanded

to automatically return to the current remote control position.

Circle & Follow Mode: Speciﬁcally designed for shooting moving objects, this mode is ideal for taking

pictures of moving boats. There are 2 ways to activate this mode: 1. enter the Circle mode, then push the

Follow Me button; 2. enter the Follow Me mode, then ﬂick the mode stick. Working mode: When the aircraft

switch from Circle mode to Circle & Follow me mode, the aircraft will slowly circle the remote control with a

radius of 10 meters; when the aircraft switches from the Follow me mode to Circle & Follow me mode, the

drone will ﬂy to a radius of 10 meters and start to circle. It is recommended the Follow Me speed is under 2

m / s, beyond this speed, it is possible to lose the aircraft.

In the GPS mode, the drone will not arm unless there are suﬃcient satellites to establish the home

point. This point is used if the drone cannot establish the location of the remote controller.

In ATTI mode, the drone’s top speed is faster than in GPS mode. When ﬂying in a calm environment, the

pilot should allow a minimum of 30 meters of braking distance to ensure ﬂight safety.

Flying in Atti mode requires more skill and caution. If you lose control of the drone in ATTI mode,

switching to GPS mode can help stabilize ﬂight as long as there is suﬃcient GPS coverage.

In Follow Me mode, the joysticks are disabled. Press and hold the Follow Me button again to cancel

Follow Me - the Controller Status Light will ﬂash red conﬁrming Follow Me mode has been cancelled

and joystick function has been restored.

If the GPS module in the remote controller does not have an accurate ﬁx, the controller status light will

ﬂash red, Follow Me cannot be started.

SPRY+ has two Return Home modes: Manual Return and Out-of-Range Return.

Manual Return: When you activate return function of the Spry+, it will return to the remote controller. When

returning to the remote control 30 meters away, the aircraft will record the coordinates of the remote control

as the ﬁnal return point. At this point, users can leave this location and let the aircraft land. (During the return

ﬂight, if you operate the joystick, the aircraft will stop returning. If you stop operating the joystick, the aircraft

continues to return）

Out-of-Range Return: If the drone loses contact with the remote control for any reason, the aircraft will

execute an automatic return to the last-known position of the remote control. During the return ﬂight, if the

aircraft is reconnected to the remote control signal, the automatic return will be cancelled and the Spry+ will

await instructions from the remote controller.

Return Home

Operation

DescriptionIllustration

Press and hold the Return Home switch for 2 seconds, the system will

beep and start the return process. At this point, the aircraft will

auto-return to the remote controller . “RTH” is displayed in the upper

right corner of the remote control screen.

To cancel the Return Home process, press and hold the Return Home

switch for 2 seconds, the system will beep and cancel the return process

after both joysticks have been moved.

Regardless of the vertical height, if the horizontal distance is <20 meters,

the drone will maintain its height and return.

Vertical height < 30metres and horizontal distance > 20metres, the

drone will ascend up to 30metres, and then return.

Return Process

Description

Flare Maneuver

Return Home

Regardless of the vertical height, if the horizontal distance is <20 meters, the drone will maintain its

height and return.

During automatic Return Home, when the remote control signal is restored, switch the Flight Mode

brieﬂy between GPS and ATTI mode and move the right joystick to take control of the drone and

cancel automatic return.

Propellers

The fuselage of the drone includes a pair of Drone Nose Lights and Drone Status Lights on the rear arms.

Their positions are shown below:

The Red Drone Nose Lights are used to indicate the direction of the nose of the drone, they will be solid red

when the drone is powered on. The rear Drone Status Lights are green and indicate the status of the current

ﬂight control system. Please refer to the following table for the diﬀerent ﬂash modes for the Drone Nose and

Status Lights.

Drone Indication Lights

Drone Nose and Status Light Messages

Aircraft initialization / horizontal calibration:

Drone power on/oﬀ

Alternating Red, Green slow ﬂashing Aircraft initializing / horizontal calibration

Red Drone Nose Lights

Green Status lights

GPS Status

Green Slow Flashing

Green ON

Poor GPS signal

Good GPS signal

Compass Calibration

Green Fast Flashing

Green Slow Flashing

Horizontal calibration

Vertical calibration

Red Fast Flashing Remote control connected but still locked

Low Battery Warning

Red Fast Flashing Low battery warning

Red ON Remote control connected and drone unlocked

Remote controller signal

Red Slow Flashing Remote controller signal lost

Spry+ comes with 6" 2-bladed propellers and is also compatible with 5” 3-bladed propellers. The 2 blade

speed is slower, but the ﬂight time is longer than the 3 blade. You can choose propellers to suit your

requirements.

Installing and removing the propellers:

When selecting a microSD card for use with your camera, for best results always ensure that the card is rated

for 4K video throughput.

To insert the card, place the microSD card face-up in the recess inside the battery compartment. Carefully

slide the card towards the nose of the Spry+ until it clicks and locks into place.

To remove the card, push the card gently towards the nose of the Spry+ until it clicks and then ejects. Take

care to prevent the card from ejecting too fast out of the slot.

Micro SD Card Installation

Drone nose

CW propeller 6045R

CCW propeller 6045 CW propeller 6045R

CCW propeller 6045

1. Place each propeller onto the motor hubs according to the diagram below. The propeller

type is stamped on the top of the propeller blade. Propeller types that end with the letter

“R”are fitted to clockwise (CW) motors. If propellers are fitted incorrectly, the drone will

crash.

2. Hold the motor with one hand while tightening the propeller nut. Tighten the nut only until

the propeller does not turn on the motor. Overtightening the propeller nut will damage the

motor.

3. Before each flight, check that the propellers are smooth and undamaged.

The Spry+ is supplied with a high-voltage lithium battery (LiHV) and a corresponding charger.

To charge the drone battery: Plug in the charger. After 3 seconds, its four status lights will ﬂash left and right

indicating the charger is ready. Connect the battery to the charger using the supplied adapter cable. The

larger plug on the cable is inserted into the top port of the charger. The plugs can only be inserted one way

and do not require force. If the plug is diﬃcult to insert, try the other orientation.

After the battery is connected, the four battery status indicators show the level of charge: 25%, 50%, 75%,

and 100%. When all 4 lights are permanently ON, the battery is fully charged.

Battery

1．Twist open the battery hatch lock. Grasp the forward end of the battery cover with the

provided tool and pull the battery cover up.

2．Insert the battery vertically into the drone with the contacts towards the back of the drone

and press down until it is properly seated.

3．Check that the seals on the cover are clean and lightly lubricated. Insert the back of the

cover first, ensuring that the cover is securely under the clip at the base of the GPS dome,

then press down on the cover to seal the battery compartment.

Battery Installation

Note: If the four indicators flash at the same time, the charger or battery is faulty. Stop

charging and check all connections.

This section introduces the remote controller functions, including drone and camera operation.

Remote Controller

Low Battery Alarm

During ﬂight when the voltage warning appears on the remote controller screen, prepare to return

and land the drone as soon as possible.

Power OFF the drone when not in use to prevent over-discharging and permanently damaging the

battery. Battery damage is not covered by warranty.

When the drone battery voltage drops to a low level (10.9V), the Drone Nose Lights will fast-ﬂash red. The

pilot will simultaneously receive warnings on the remote controller. The screen will display “Aircraft Low

Battery” and the controller will beep and vibrate. Find a suitable place to land as soon as possible. If the

aircraft voltage drops to 10.7V, the aircraft will slowly and automatically land in place.

During auto-landing, the pilot can use the remote controller to alter the landing site, but this should be done

within one minute or the battery will be over-discharged and the drone may crash.

1. In low temperature environments (-0C degrees to 5C degrees) , flight time will be reduced.

Ensure batteries are fully charged and kept warm (20~30C) before use.

2. Also be aware that the low battery warnings will provide less warning time, so land the drone

as soon as the first battery warning appears.

3. After landing on cold water, the drone may need up to 15 seconds to stabilize its gyroscope

before being able to re-arm. Consider this before landing on water particularly if there are

waves.

Low temperature precautions

4. Twist the battery cover lock to lock the cover in place.

Low Battery Alarm

The Spry+ Remote Controller has a built-in battery and charging circuit. Charge the controller using the

supplied micro-USB cable and a regular 5V/2A USB charger. Normal charging time is ~90 minutes.

Some USB ports and some USB cables cannot provide the full 2 amps (2A) of power required. These

ports and cables can still be used to charge the Remote Controller but the charging time will be

longer.

During charging, the remote controllers power button will glow blue. When charging is complete the blue

light will turn oﬀ. Charging is possible during ﬂight if necessary, but the remote must be connected to the

drone before connecting the charging cable.

The remote control has a built-in lithium battery and the operating time is about 2 hours. When the remote

controller battery is low, the remote control will beep and the battery power icon in the upper right corner

of the screen will be red. The remote control will then have approximately 10 minutes of power left. It is best

to return the drone and land as soon as possible or plug in the controller to charge the battery.

The Spry+ Remote Controller operates using two frequency bands, 2.4GHz and 5.8GHz. The 2.4GHz band is

used for drone control and 5.8GHz is for the FPV video signal. The remote control has a built-in 4.3-inch FPV

screen that displays real-time images and ﬂight data of the aircraft.

Remote Controller Operation

Power Switch

One Key Return Home Switch

DescriptionIllustration

Power on: Long-press the power button for 3 seconds, the remote

controller will vibrate, beep and the screen will turn on.

Power oﬀ: Long-press the power button again for 3 seconds to turn oﬀ

the remote controller.

On: Long-press the Return Home switch until the the controller beeps.

The aircraft enters the return state, and the FPV screen will display“RTH”.

Cancel Return Home: Long-press the Return Home switch until the

controller beeps. and operate both joysticks to regain control.

Return Home

Charging the Remote Controller Battery

Please contact us if you need to change to right hand throttle.

Flight Mode Switch

Follow Me mode Switch

Follow Me

DescriptionIllustration

Drone Control

Left hand throttle- (American/ European conﬁguration)

GPS：GPS mode

Circle Flight：Orbit mode

AT TI ：ATTI mode

GPS

Circle Flight

AT T I

In the Follow Me mode, the joysticks are disabled. Long-press the“F” button again to cancel Follow Me

and resume joystick operation.

When the speed of the remote controller exceeds 10m/s during Follow Me operation, the drone will

continue to ﬂy forward at the maximum speed. At this time, you can slow down or stop to wait for the

aircraft. If you’re out of the remote control's eﬀective range, the aircraft will return to the position where

the GPS signal of the remote control that was ﬁnal received.

If the remote controller’s GPS does not have a ﬁx, the Follow Me function cannot be activated.

When the Controller Status Light is solid green, this indicates that the

GPS of the remote control has a ﬁx and the Follow Me function is

available in GPS and Circle mode

To activate Follow Me, Long-press the Follow Me button “F” for 2

seconds until a beep sounds. The Controller Status Light will change to

solid red, indicating that the aircraft is in Follow Me mode.

Long-press the “F" button again for 2 seconds to cancel Follow Me.

Right Stick

Left Stick

Green Status light indicates good GPS ﬁx.

Remote Controller Pairing

Always pair the remote controller and then select the FPV channel to match the best channels and

avoid interference.

DescriptionIllustration

FPV Channel Tuning

FPV Chennel Button

DescriptionIllustration

1. To pair the remote controller to the drone, while holding the

Return Home switch down, power on the remote controller.

2. The remote controller will vibrate and beep twice. The

Controller Status Light will flash red and green.

3. Power on the drone. After pairing has completed, the

Controller Status Light will turn green.

4. Long-press the FPV channel button (CH). The FPV screen

will display “RF SEARCHING” and automatically find the

best FPV channel.

There are 8 FPV channels available. Long-press the FPV channel button

(CH) and the system will automatically search for channels. (You can also

use short press to adjust frequency manually)

DescriptionIllustration

Camera Tilt Control

Camera up Camera down

Camera up: Tilt camera up

Camera down: Tilt camera down

In the absence of obstacles and interference the ﬂight height can reach >80m and FPV

transmission range can reach 800m. For best reception, keep the left-hand (2.4GHz)

antenna horizontal and the right-hand antenna (5.8GHZ) vertical.

Camera

APP installation: The SwellCam2 app is available for iOS and Andoid devices. Android systems can download

the APK from either the Android Play Store or our website www.swellpro.com.

To connect the app to the Spry+’s camera, power on the drone, then press the WiFi switch on the underside

of the drone. The switch will begin ﬂashing Red-Green. Connect your mobile device to the SwellPro... WiFi

hotspot, the password is 00000000.

Using the APP: Open the camera APP. The screen will show the camera preview. With the APP, you can set

the parameters for photos and video, you can also control the camera on the ground and take photos or

videos.

Spry+'s built-in camera can capture 4K videos and 12 megapixel still images. With its inbuilt WiFi function

you can also use a mobile app to change settings and download videos and photos. This section introduces

camera parameters and use.

The Spry+ will automatically save longer video ﬁles into chapter ﬁles of 4GB.

Always stop video recording before powering oﬀ the Spry+ or your video will be lost.

Camera Settings

WiFi switch

DescriptionIllustration

Camera Control

Photo/Video

Long-press the camera button (ﬁve beeps) to start or stop video

recording.

Short-press the camera button (two beeps) to take a photo.

You cannot take a photo if video recording is started.

After taking a photo, the camera information window will display a

camera icon and the resolution of the photo. The card icon

indicates the remaining number of photos the microSD card can hold.

In video mode, the card icon indicates the remaining hours and

minutes (hh:mm) the microSD card can hold.

00:05:20

8.5G2016/05/03 17:08

Camera Settings

Photo Settings

Picture Size

Burst Speed

Interval Shooting

Selﬁe-Timer

12M 16: 9 12M 4: 3

OFF 3P/S 5P/S 10P/S

OFF 3s 5s 10s 30s 60s

OFF 2s 10s

Video Settings

Resolution

Electronic Stabilization

Record Format

Video Format

3840x2160 30P 2704x1524 30P 1920x1080 120P/60P/30P 1280x720 240P

ON OFF

MP4 MOV

PAL NTSC

Camera Settings

White Balance

Distortion Correction

Metering

Format

About this device

Restore Settings

+2.0 +1.7 +1.3 +1.0 +0.7 +0.3 0.0 -0.3 -0.7 -1.0 -1.3 -1.7 -2.0

AUTO, cloudy, sunny, Incandescent lamp, Fluorescent lamp

ON OFF

Global metering, Center-weighted, spot

Conﬁrm Cancel

ﬁrmware details

Conﬁrm Cancel

Picture Settings

Video Settings

Camera Settings

Picture Button

Record Button

Playback Button

Record Time

Time Stamp Memory card capacity

Turn oﬀ the camera's WIFI before ﬂight by pressing the WiFi button.

When the camera is recording video, turning oﬀ the drone without ﬁrst stopping the video will cause

corruption of the video ﬁle. Always stop video recording before powering oﬀ the drone.

When electronic stabilization is on, distortion correction will also be turned on.

Alternating Green-Red fast ﬂash

Green ON

WiFi ON

Camera in preview mode

Green slow ﬂash Camera recording

If this is your ﬁrst time ﬂying a drone, please read this manual thoroughly and watch the instructional videos

on our YouTube channel. We recommend taking professional training and guidance. When ﬂying, select an

environment appropriate to your skills. It is advisable for all drone pilots to become familiar with ying in

ATTI mode in case of GPS or magnetic interference, which can aect drone controls.

1. Although the Spry+ is waterproof, do not ﬂy in heavy fog or if the wind is very strong or gusting above

Beufort Force 4.

2. Don't ﬂy near metal frame walls or structures as this can aﬀect the GPS and compass signals. It is

recommended to ﬂy at least 10 meters away. Since the remote controller also has a GPS module inside,

please ensure the pilot remains 10 meters away from metal frame walls.

3. Flying in a complex electromagnetic environment, (e.g. boat) radio equipment may interfere with the

drone’s 2.4G signals which may cause the aircraft to react slowly or become uncontrolled. In these

situations, you can turn oﬀ the remote control for the aircraft to return automatically, or restart the

remote control, which can assist re-establishing control.

4.. When your drone is new, calibrate and ﬂy several times over land to adapt the aircraft to the local

environment before ﬂying over water.

5. When ﬂying at altitudes above sea level, environmental factors including air density reduce the

performance of aircraft and therefore also the drone batteries.

6. When the temperature is below 10°C, the drone may not unlock. Power on the drone for a few minutes

to warm up and then the motors can be unlocked.

7. Normally, only the Compass Sensor needs to be calibrated when you have a new drone, check the

calibration section.

8. Aircraft does not support calibration on moving objects, such as boats.

9. Make sure the waterproof membrane is in good condition. The membrane prevents water from entering

the drone but allows air pressure to equalise the drone’s altimeter to operate correctly. Avoid touching

the membrane with your hands. If the membrane is dirty or completely soaked it will cause the altimeter

to work abnormally and the drone might not hover or ﬂy well.

Camera Indicator

Flight

Basic ﬂight knowledge

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