© 2015 DJI. All Rights Reserved. 

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# Aircraft

This chapter describes the features of the Flight Controller, Vision Positioning System and the Intelligent Flight Battery.

### 12 © 2015 DJI. All Rights Reserved.Aircraft



## Flight Status Indicator
The INSPIRE 1 comes with the Front LED, Rear LED and Aircraft Status Indicator. The positions of these LEDs are shown in the fgure below:

The Front and Rear LED show the orientation of the aircraft. The Front LED displays solid red and the Rear LED displays solid green. Aircraft Status Indicator shows the system status of the fight controller. Refer to the table below for more information about the Aircraft Status Indicator: 

# Aircraft
Flight Controller
The Inspire 1’s fight controller is based on DJI fight controller with several enhancements such as new fight mode and new safe mode. Three safe modes are available: Failsafe, Return Home and Dynamic Home Point. These features ensure the safe return of your aircraft if the control signal is lost. A fight recorder stores crucial fight data for each fight. 

## Flight Mode
Three fight modes are available. The details of each fight mode are found in the section below: P mode (Positioning) : P mode works best when GPS signal is strong. There are three different states of P mode, which will be automatically selected by the Inspire 1 dep ending on GPS signal strength and Vision Positioning sensors: P-GPS: GPS and Vision Positioning both are available, and the a ircraft is using GPS for positioning. P-OPTI: Vision Positioning is available but the GPS signal is not. Aircraft is using only Vision Positioning for hovering P-ATTI: Neither GPS or Vision Positioning available, aircraft is using only its barometer for positioning, so only altitude is controlled. A mode (Attitude): The GPS and Vision Positioning System is not used for holding position. The aircraft only uses its barometer to maintain altitude. If it is still receiving a GPS signal, the aircraft can automatically return home if the Remote Controller signal is lost and if the Home Point has been recorded successfully. F mode (Function): Intelligent Orientation Control (IOC) is activated in this mode. For more information about IOC, refer to the IOC in Appendix.
Use the Flight Controller mode switch to change the fight mode of the aircraft, refer to the “Flight Mode Switch” on P27 for more information.

Front LED Rear LED Aircraft Status Indicator© 2015 DJI. All Rights Reserved. 

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### Aircraft Status Indicator Description

Normal Red, Green and Yellow Flash Alternatively Power on and self-check
Green and Yellow Flash Alternatively Aircraft warming up Green Flashes Slowly Safe to Fly (P mode with GPS and Vision Positioning)
X2 Green Flashes Twice Safe to Fly (P mode with Vision Positioning but without GPS) Yellow Flashes Slowly Safe to Fly (A mode but No GPS and Vision Positioning) Warning Fast Yellow Flashing Remote Controller Signal Lost Slow Red Flashing Low Battery Warning Fast Red Flashing Critical Low Battery Warning

Red Flashing Alternatively IMU Error

— Solid Red Critical Error Red and Yellow Flash Alternatively Compass Calibration Required



## Return to Home (RTH)
The Return to Home (RTH) brings the aircraft back to the last recorded Home Point. There are three cases that will trigger RTH procedure; they are Smart RTH, Low Batter y RTH and Failsafe RTH.

GPS Description

Home Point The Home Point is the location at which your aircraft takes off when the GPS signal is strong. You can view the GPS signal strength through the GPS icon ( ). If you are using the Dynamic Home Point setting, the Home Point will be updated to your current position as you move around and when the Aircraft Status Indicator blinks green.



### Smart RTH Using the RTH button on the remote controller (refer to “RTH button” on P28 for more information) or the RTH button in the DJI Pilot app when GPS is available to enables smart RTH. The aircraft return to the latest recorded Home Point, you may control the aircraft's orientation to avoid collision during the Smart RTH. Press the Smart RTH button once to start the process, press the Smart RTH button again to exit Smart RTH and regain the control.

### 14 © 2015 DJI. All Rights Reserved.Aircraft INSPIRE 1 User Manual

Battery Level

Warning Remark Aircraft Status Indicator DJI Pilot app Flight Instructions

Low battery level warning The battery power is low. Please land the aircraft. Aircraft status indicator blinks RED slowly. Tap “Go-home” to have the aircraft return to the Home point and land automatically, or “Cancel” to resume normal fight. If no action is taken, the aircraft will automatically go home and land after 10 seconds. Remote controller will sound an alarm. Fly the aircraft back and land it as soon as possible, then stop the motors and replace the battery.

Critical Low battery level warning The aircraft must land immediately. Aircraft status indicator blinks RED quickly. The DJI Pilot app screen will fash red and aircraft starts to descend. Remote controller will sound an alarm. The aircraft will begin to descend and land automatically.

Estimated remaining fight time Estimated remaining fight based on current battery level. N/A N/A N/A 

### Low Battery RTH The low battery level failsafe is triggered when the DJI Intelligent Flight Battery is depleted to a point that may affect the safe return of the aircraft. Users are advised to return home or land the aircraft immediately when these warnings are shown. DJI Pilot app will advise user to return the aircraft to the Home Point when low battery warning is triggered. Aircraft will automatically return to the Home Point if no action is taken after 10 seconds countdown. User can cancel the RTH by pressing once on the RTH button. The thresholds for these warnings are automatically determined based on the current aircraft altitude and its distance from the Home Point. Aircraft will land automatically if the current battery level can only support the aircraft to land to the ground from the current altitude. User can use the remote controller to control the aircraft’s orientation during the landing process.

The Battery Level Indicator is displayed in the DJI Pilot app, and is described below

Battery level indicator Critical Low battery level warning(Red)

Low battery level warning Suffcient battery level(Green)

Remaining fight time

Power requires to return home© 2015 DJI. All Rights Reserved. 

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Aircraft automatically descends and lands if RTH is triggered when the aircraft fies within a 20 meter (65 feet) radius of the Home Point. Aircraft cannot avoid obstruction during the Failsafe RTH, therefore it is important to set an reasonable Failsafe altitude before each fight. Launch the DJI Pilot app and enter “Camera” view and select “MODE” to set the Failsafe altitude. Aircraft will stop ascending and immediately return to the Home Point if you move the throttle stick if the aircraft reaches 20 m altitudes or beyond during Failsafe. When the critical battery level warning activates and the aircraft is descending to land automatically, you may push the throttle upward to hover the aircraft and navigate it to a more appropriate location for landing. Color zones and markers on the battery level indicator refect estimated remaining fight time and are adjusted automatically, according to the aircraft’s cur rent status.



### Failsafe RTH Failsafe RTH is activated automatically if remote controller signal (including video relay signal) is lost for more than 3 seconds provided that Home Point has been successfully recorded and compass is working normally. Return home process may be interrupted and the operator can regain control over the aircraft if a remote controller signal is resumed.



### Failsafe Illustration

GPS 

## Dynamic Home Point
Dynamic home point is useful in situations when you are in motion and require a Home Point that is different from the takeoff point. GPS module is located at the position shown in the fgure below:

Ensure the space above the GPS module is not obstructed when using Dynamic Home Point. 5 Go Home(20m can be set)

Fast Blinking Yellow 1 Record Home Point (HP)

Blinking Green 3 Remote Controller Signal Lost

Fast Blinking Yellow 2 Confrm Home Point

Blinking Green 6 Landing after Hovering 15secs

Fast Blinking Yellow 4 Signal Lost Lasts 3secs.

Fast Blinking Yellow Height over HP>20m

Elevate to 20m

Height over HP<=20m 20m

### 16 © 2015 DJI. All Rights Reserved.Aircraft INSPIRE 1 User Manual

There are two options for Dynamic Home Point. 1. Set the aircraft current coordinate as the new Home Point. 2. Set the remote controller’s coordinate as the new Home Point.

Setting Up Dynamic Home Point Follow the steps below to setup Dynamic Home Point: 1. Connect to the mobile device and launch the DJI Pilot app and go to the “Camera” page. 2. Tap“ ”and select“ ”, to reset the remote controller’s coordinates as the new Home Point. 3. Tap“ ”and select“ ”, to reset the aircraft ’s coordinates as the new Home Point. 4. The aircraft status indicator blinks green to show Home Point is set successfully.


## Vision Positioning System
DJI Vision Positioning is a positioning system that uses ultrasonic and image data to help the aircraft identify its current position. With the help of Vision Positioning, your Inspire 1 can hover in place more precisely and fly indoors or in other environments where there is no GPS signal available. The main components of DJI Vision Positioning are located on the bottom of your Inspire 1, including [1]two sonar sensors and[2]one monocular camera.

Using Vision Positioning Vision Positioning is activated automatically when the Inspire 1 is powered on. No manual action is required. Vision Positioning is typically used in the indoor environment where no GPS is available. By using the sensors on the Vision Positioning system, Inspire 1 can perform precision hovering even when no GPS is available. [1] [2]© 2015 DJI. All Rights Reserved. 

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Follow the steps below to use Vision Positioning: 1. Toggle the switch to “P” as shown the fgure to the right: 2. Place the Inspire 1 on a fat surface. Notice that the Vision Positioning system

cannot work properly on surfaces without pattern variations. 3. Power on the Inspire 1. The aircraft status indicator will fash twice in green light,

which indicates the Vision Positioning system is ready. Gently push the throttle up to lift off, and the Inspire 1 will hover in place.

The performance of your Inspire 1’s Vision Positioning System is subject to the surface you are fying over. The ultrasonic waves may not be able to accurately measure the distance over sound absorbing materials, and the camera may not function correctly in suboptimal environments. The aircraft will switch from “P” mode to “A” mode automatically if both GPS and Vision Positioning System are not available. So operate the aircraft cautiously when in any of the following situations:

Flying over monochrome surfaces (e.g. pure black, pure white, p ure red, pure green). Flying over a highly refective surfaces. Flying at high speeds(over 8m/s at 2 meters or over 4m/s at 1 m eter). Flying over water or transparent surfaces. Flying over moving surfaces or objects. Flying in an area where the lighting changes frequently or dras tically. Flying over extremely dark (lux < 10) or bright (lux > 10,000) surfaces. Flying over surfaces that can absorb sound waves (e.g. thick carpet). Flying over surfaces without clear patterns or texture. Flying over surfaces with identical repeating patterns or textures (e.g. tiles with same design). Flying over inclined surfaces that will defect sound waves away from the aircraft. In the event of loss of remote controller’s signal, the aircraft will hover for 8 seconds and then auto-land if it is in “P” mode. Keep the sensors clean at all times. Dirt or other debris may adversely affect the effectiveness of the sensors. The effective hovering altitudes of the aircraft is from 0 to 2.5 meters. Vision Positioning system may not function properly when the ai rcraft is fying over water. Vision Positioning system may not be able to recognize pattern on the ground in low light conditions (less than 100lux). Do not use other ultrasonic devices with frequency of 40 KHz wh en Vision Positioning system is in operation. Vision Positioning system may not be able to stabilize the aircraft when flying close to the ground (below 0.5 meters) in fast speed. Keep the animals away from the aircraft when Vision Positioning system is activated. The sonar sensor emits high frequency sound that is only audible to some animals.


## Flight Recorder
Flight data is automatically stored in the internal storage device of the aircraft. User can gain access to these data through the DJI Pilot app. This includes fight duration, orientation, distance, aircraft status information, speed, and other parameters. 

## Attaching and Detaching the Propellers
Use only DJI approved propellers with your Inspire 1. The grey or black nut on the propeller indicates the rotation direction of the propeller and where it should be attached. To attach the propellers properly,

### 18 © 2015 DJI. All Rights Reserved.Aircraft INSPIRE 1 User Manual

Ensure propellers are attached to its corresponding motors, oth erwise the aircraft cannot take off. Handling the propellers with care. Manually tighten each of the propellers on the corresponding mo tors to ensure it is attached frmly.



### Detaching the Propellers Hold the motor still. Then spin the propeller in the unlock direction indicated on the propeller itself. 

### Detaching 1345s Quick-Release Propellers Press the 1345s Quick-Release propellers downward firmly then rotate the propeller in the unlock direction to unlock the propellers.
Check that the propellers and motors are installed correctly an d frmly before every fight. Ensure that all propellers are in good condition before each fight. DO NOT use old, chipped, or broken propellers. To avoid injury, STAND CLEAR of and DO NOT touch propellers or motors when they are spinning. ONLY use original DJI propellers for a better and safer fight e xperience.


## DJI Intelligent Flight Battery
The DJI Intelligent Flight Battery has a capacity of 4500mAh, voltage of 22.2V, and smart chargedischarge functionality. It can only be charged with an appropriate DJI approved charger.

Intelligent Flight Battery Charger match the nut with the dots on the motors of your Inspire 1: Propellers Grey cap(1345) Black cap(1345R) Figure Attach On Motors without a black dot Motors with a black dot
Legends Lock : Turn the propellers in the indicated direction to mount and tighten Unlock : Turn the propellers in the indicated direction to loosen and remove


### Attaching the Propellers
1. Attach the propellers with a grey nut onto a motor without a black dot and spin the propellers clockwise

to secure them in place. Attach the propellers with a black nut onto a motor with a black dot and spin the propellers counter clockwise to secure its position. Be sure to completely tighten each propeller by hand before fight.© 2015 DJI. All Rights Reserved. 

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### DJI Intelligent Flight Battery Functions
1. Battery Level Display: LEDs display the current battery level. 2. Battery Life Display: LEDs display the current battery power cycle. 3. Auto-discharging Function: The battery automatically discharges to below 65% of total power when it

is idle (press the power button to check battery level will cause battery to exit idle state) for more than 10 days to prevent swelling. It takes around 2 days to discharge the battery to 65%.It is normal to feel moderate heat emitting from the battery during the discharge process. Discharge thresholds can be set in the DJI Pilot app. 4. Balanced Charging: Automatically balances the voltage of each battery cell when charging. 5. Over charge Protection: Charging automatically stops when the b attery is fully charged. 6. Temperature Detection: The battery will only charge when the temperature is between 0 °C(32°F) and

40°C (104°F). 7. Over Current Protection: Battery stops charging when high amper age (more than 10A) is detected. 8. Over Discharge Protection: Discharging automatically stops when the battery voltage reaches 18V to

prevent over-discharge damage 9. Short Circuit Protection: Automatically cuts the power supply when a short circuit is detected. 10. Battery Cell Damages Protection: DJI Pilot app shows warning message when damaged battery cell is detected. 11. Battery Information History: Show the last 32 entries of battery information records that include warning messages and so on. 12. Sleep Mode: Sleep mode is entered after 10 minutes of inactivity to save power. 13. Communication: Battery voltage, capacity, current, and other relevant information is provided to the aircraft’s to the main controller.

Refer to Disclaimer and Intelligent Flight Battery Safety Guidelins before use. Users take full responsibility for all operations and usage. Battery must be fully charged before using it for the frst time. Refer to "Charging the Intelligent Flight Battery" P21 for more information .



### Using the Battery

Powering ON/OFF Powering On: Press the Power Button once, then press again and hold for 2 seconds to power on. The Power LED will turn red and the Battery Level Indicators will display the current battery level. Powering Off: Press the Power Button once, then press again and hold for 2 s econds to power off. LED1 LED2 LED3 LED4 Power Button (Built-in LED)

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### Low Temperature Notice:
1. The performance of the intelligent Flight Battery is significantly reduced when flying in a low

temperature environments (those with air temperatures below 5°C). Ensure that the battery is fully charged and the cell voltage is at 4.35 V before each fight. 2. Using the Intelligent Flight Battery in extremely low temperature environments (those with air

temperatures below -10°C) is not recommended. When flying in environments with temperatures between 5°C and -10°C, the Intelligent Flight Battery should be a ble to achieve the appropriate voltage levels (above 4.2 V), but it is recommended that you apply the included insulation sticker to the battery in order to prevent a rapid drop in temperatures. 3. If the DJI Pilot app displays the “Critical Low Battery Level Warning” when fying in low temperature

environments, stop fying and land the aircraft immediately. You will still be able to control the aircraft’s movement when this warning is triggered. 4. Store the Intelligent Flight Battery in a room temperature environment and ensure that its temperature

exceeds 5°C before using it in the low temperature environment. 5. When using the Inspire 1 in a low temperature environment, begin by allowing the aircraft to hover at a

low altitude, for approximately one minute, to heat the battery

. 6. To ensure optimum performance, keep the Intelligent Flight Battery’s core temperature above 20°C

when in use.
In cold environments, insert the battery into the battery compartment and allow the aircraft to warm up for approximately 1-2 minutes before taking off.



### Checking the battery level The Battery Level Indicators display how much remaining power the battery has. When the battery is powered off, press the Power Button once. The Battery Level Indicators will light up to display the current battery level. See below for details.
The Battery Level Indicators will also show the current battery level during charging and discharging. The indicators are defned below.

: LED is on. : LED is fashing. : LED is off.

Battery Level
LED1 LED2 LED3 LED4 Battery Level 87.5%~100%
75%~87.5%
62.5%~75%
50%~62.5%
37.5%~50%
25%~37.5%
12.5%~25%
0%~12.5%
=0%