Fly-sky radio with OpenTx custom firmware setup 

To enter Radio setup menu:

1. Press EXIT to exit 3DR Logo

2. Press/Hold “+” button
Fly-sky radio with OpenTx custom firmware setup 

RADIO SETUP 1/6

Sound

 Mode NoKey

 Length ---|---

Contrast 25

Alarms

 Battery Low 9.0

 Inactivity 0m

 Memory Low 

 Sound Off 

Backlight

 Mode OFF

 Duration 0s

 Alarm 

Splash screen 

Time Zone 0

GPS Coords DD.D

Rx Channel Ord RETA

Mode

 2 Rud Thr Ele Ail

Set parameters as specified below:
Fly-sky radio with OpenTx custom firmware setup 

To enter OpenTx setup menu:

1. Press EXIT to exit 3DR Logo

2. Press/Hold “-” button
Fly-sky radio with OpenTx custom firmware setup 

MODELSEL 1/10

*01 3DR Iris 137

 02

 03

 04

 05

 06

 07

Create a new model:

Move to 02 using DN

Press/Hold MENU

MODELSEL 1/10

 01 3DR Iris 137

*02 MODEL02 32

 03

 04

 05

 06

 07
Fly-sky radio with OpenTx custom firmware setup 

Delete the 3DR Iris model:

Move to 01 using UP

Press MENU to highlight the 3DR Iris model

MODELSEL 1/10

 01 3DR Iris 137

*02 MODEL02 32

 03

 04

 05

 06

 07

Press/Hold EXIT

MODELSEL 1/10

 01 3DR Iris 137

*02 MODEL02 32

 03

 04

 05

 06

 07

DELETE MODEL

[MENU] [EXIT]

Press MENU to confirm
Fly-sky radio with OpenTx custom firmware setup 

Move to 02 using DN

MODELSEL 1/10

 01

*02 MODEL02 32

 03

 04

 05

 06

 07

Press “-” to go to SETUP 2/10
Fly-sky radio with OpenTx custom firmware setup 

SETUP 2/10

Name 3DR Iris

Timer1 THs 00:00

Minute 

Countdown 

Timer2 OFF 00:00

Minute 

Countdown 

E. Limits 

E. Trims 

Trim Step Expo

T-Reverse 

T-Source Thr

T-Trim 

T-Warning 

S-Warning 

Ctr Beep RETA123

Proto PPM 8CH

PPM frame 22.5ms 300u -

Set parameters as specified below:
Fly-sky radio with OpenTx custom firmware setup 

MIXER 5/10

CH1 Ail 100

CH2 Ele 100

CH3 Thr 100

CH4 Rud 100

CH5 MAX -70 CS1

:= MAX -35 CS2

:= MAX -15 CS3

:= MAX 15 CS4

:= MAX 35 CS5

:= MAX 70 CS6

CH6 P3 100

CH7 MAX 100 ELE

:= MAX -100 !ELE

Press/Hold

 MENU

Set parameters as specified below: EDIT MIX CH1

Source Ail

Weight 100

Offset 0

Trim ON DRex 

Curve Diff 0

Mode 01234

Switch - - -

Warning OFF

Multpx Add

Delay Up 0.0

Delay Dn 0.0

Slow Up 0.0

Slow Dn 0.0

EDIT MIX CH2

Source Ele

Weight 100

Offset 0

Trim ON DRex 

Curve Diff 0

Mode 01234

Switch - - -

Warning OFF

Multpx Add

Delay Up 0.0

Delay Dn 0.0

Slow Up 0.0

Slow Dn 0.0

Press/Hold

 MENU
Fly-sky radio with OpenTx custom firmware setup 

MIXER 5/10

CH1 Ail 100

CH2 Ele 100

CH3 Thr 100

CH4 Rud 100

CH5 MAX -70 CS1

:= MAX -35 CS2

:= MAX -15 CS3

:= MAX 15 CS4

:= MAX 35 CS5

:= MAX 70 CS6

CH6 P3 100

CH7 MAX 100 ELE

:= MAX -100 !ELE

Press/Hold

 MENU

Set parameters as specified below: EDIT MIX CH3

Source Thr

Weight 100

Offset 0

Trim ON DRex 

Curve Diff 0

Mode 01234

Switch - - -

Warning OFF

Multpx Add

Delay Up 0.0

Delay Dn 0.0

Slow Up 0.0

Slow Dn 0.0

EDIT MIX CH4

Source Rud

Weight 100

Offset 0

Trim ON DRex 

Curve Diff 0

Mode 01234

Switch - - -

Warning OFF

Multpx Add

Delay Up 0.0

Delay Dn 0.0

Slow Up 0.0

Slow Dn 0.0

Press/Hold

 MENU
Fly-sky radio with OpenTx custom firmware setup 

MIXER 5/10

CH1 Ail 100

CH2 Ele 100

CH3 Thr 100

CH4 Rud 100

CH5 MAX -70 CS1

:= MAX -35 CS2

:= MAX -15 CS3

:= MAX 15 CS4

:= MAX 35 CS5

:= MAX 70 CS6

CH6 P3 100

CH7 MAX 100 ELE

:= MAX -100 !ELE

Press/Hold

 MENU

Set parameters as specified below: EDIT MIX CH5

Source MAX

Weight -70

Offset 0

Trim OFF

Curve Diff 0

Mode 01234

Switch CS1

Warning OFF

Multpx Add

Delay Up 0.0

Delay Dn 0.0

Slow Up 0.0

Slow Dn 0.0

EDIT MIX CH5

Source MAX

Weight -35

Offset 0

Trim OFF

Curve Diff 0

Mode 01234

Switch CS2

Warning OFF

Multpx Replace

Delay Up 0.0

Delay Dn 0.0

Slow Up 0.0

Slow Dn 0.0

Press/Hold

 MENU

Press MENU

to highlight the

row, press DN

and press MENU
Fly-sky radio with OpenTx custom firmware setup 

MIXER 5/10

CH1 Ail 100

CH2 Ele 100

CH3 Thr 100

CH4 Rud 100

CH5 MAX -70 CS1

:= MAX -35 CS2

:= MAX -15 CS3

:= MAX 15 CS4

:= MAX 35 CS5

:= MAX 70 CS6

CH6 P3 100

CH7 MAX 100 ELE

:= MAX -100 !ELE

Press MENU

to highlight the

row, press DN

and press MENU

Set parameters as specified below: EDIT MIX CH5

Source MAX

Weight -15

Offset 0

Trim OFF

Curve Diff 0

Mode 01234

Switch CS3

Warning OFF

Multpx Replace

Delay Up 0.0

Delay Dn 0.0

Slow Up 0.0

Slow Dn 0.0

EDIT MIX CH5

Source MAX

Weight 15

Offset 0

Trim OFF

Curve Diff 0

Mode 01234

Switch CS4

Warning OFF

Multpx Replace

Delay Up 0.0

Delay Dn 0.0

Slow Up 0.0

Slow Dn 0.0

Press/Hold

 MENU

Press/Hold

 MENU

Press MENU

to highlight the

row, press DN

and press MENU
Fly-sky radio with OpenTx custom firmware setup 

MIXER 5/10

CH1 Ail 100

CH2 Ele 100

CH3 Thr 100

CH4 Rud 100

CH5 MAX -70 CS1

:= MAX -35 CS2

:= MAX -15 CS3

:= MAX 15 CS4

:= MAX 35 CS5

:= MAX 70 CS6

CH6 P3 100

CH7 MAX 100 ELE

:= MAX -100 !ELE

Press MENU

to highlight the

row, press DN

and press MENU

Set parameters as specified below: EDIT MIX CH5

Source MAX

Weight 35

Offset 0

Trim OFF

Curve Diff 0

Mode 01234

Switch CS5

Warning OFF

Multpx Replace

Delay Up 0.0

Delay Dn 0.0

Slow Up 0.0

Slow Dn 0.0

EDIT MIX CH5

Source MAX

Weight 70

Offset 0

Trim OFF

Curve Diff 0

Mode 01234

Switch CS6

Warning OFF

Multpx Replace

Delay Up 0.0

Delay Dn 0.0

Slow Up 0.0

Slow Dn 0.0

Press/Hold

 MENU

Press/Hold

 MENU

Press MENU

to highlight the

row, press DN

and press MENU
Fly-sky radio with OpenTx custom firmware setup 

MIXER 5/10

CH1 Ail 100

CH2 Ele 100

CH3 Thr 100

CH4 Rud 100

CH5 MAX -70 CS1

:= MAX -35 CS2

:= MAX -15 CS3

:= MAX 15 CS4

:= MAX 35 CS5

:= MAX 70 CS6

CH6 P3 100

CH7 MAX 100 ELE

:= MAX -100 !ELE

Set parameters as specified below: EDIT MIX CH6

Source P3

Weight 100

Offset 0

Trim OFF

Curve Diff 0

Mode 01234

Switch - - -

Warning OFF

Multpx Add

Delay Up 0.0

Delay Dn 0.0

Slow Up 0.0

Slow Dn 0.0

EDIT MIX CH7

Source MAX

Weight 100

Offset 0

Trim OFF

Curve Diff 0

Mode 01234

Switch ELE

Warning OFF

Multpx Add

Delay Up 0.0

Delay Dn 0.0

Slow Up 0.0

Slow Dn 0.0

Press/Hold

 MENU

Press/Hold

 MENU
Fly-sky radio with OpenTx custom firmware setup 

MIXER 5/10

CH1 Ail 100

CH2 Ele 100

CH3 Thr 100

CH4 Rud 100

CH5 MAX -70 CS1

:= MAX -35 CS2

:= MAX -15 CS3

:= MAX 15 CS4

:= MAX 35 CS5

:= MAX 70 CS6

CH6 P3 100

CH7 MAX 100 ELE

:= MAX -100 !ELE

Set parameters as specified below:

EDIT MIX CH7

Source MAX

Weight -100

Offset 0

Trim OFF

Curve Diff 0

Mode 01234

Switch !ELE

Warning OFF

Multpx Replace

Delay Up 0.0

Delay Dn 0.0

Slow Up 0.0

Slow Dn 0.0

Press/Hold

 MENU

Press MENU

to highlight the

row, press DN

and press MENU
Fly-sky radio with OpenTx custom firmware setup

Go to LIMITS screen and set INV on CH2 and CH6.

LIMITS 6/10

CH1 0.0 − 100 ← 100 − − −

CH2 0.0 − 100 → 100 INV

CH3 0.0 − 100 ← 100 − − −

CH4 0.0 − 100 − 100 − − −

CH5 0.0 − 100 ← 100 − − −

CH6 0.0 − 100 → 100 INV

CH7 0.0 − 100 ← 100 − − −

Set parameters as specified below (continuation ):

CUSTOM SWITCHES 8/10

CS1 AND ID0 !AIL − − −

CS1 AND ID1 !AIL − − −

CS3 AND ID2 !AIL − − −

CS4 AND ID0 AIL − − −

CS5 AND ID1 AIL − − −

CS6 AND ID2 AIL − − −

CS7 − − − − − − 0 − − −

Finally go to CUSTOM SWITCHES screen and set as specified.

Note: The arrows on the 4th column indicates the position of the 

sticks, switches and knobs. To have the same directions as the 

screen displayed, move the throttle down, the switches away 

from you and the tilt knob rotated counterclockwise
Fly-sky radio with OpenTx custom firmware setup 

TELEMETRY 10/10

A1 channel 0.00v

 Range 0.00v

 Offset 0.00v

 Alarm - - - < 0.00v

 Alarm - - - < 0.00v

A2 channel 0.00v

 Range 0.00v

 Offset 0.00v

 Alarm - - - < 0.00v

 Alarm - - - < 0.00v

RSSI

 Alarm Org < 45

 Alarm Red < 42

UsrData

 Proto Hub

 Blades 2

 Voltage FAS

 Current FAS

Vario

 Source Vario

 Limit 0.5 10

Screen 1 Nums

 Alt Sats

 Spd Batt

 Dist mAh

 Time Tbat

Screen 2 Nums

 - - - - - -

 - - - - - -

 - - - - - -

 - - - - - -

Set parameters as specified next:
Fly-sky radio with OpenTx custom firmware setup 

How to delete a row:

You need to highlight the row by pressing MENU, then press/hold EXIT

Note: If one row have derived rows (e.g. rows below CH5) you need to delete the derived first.

How to copy a row:

You need to highlight the row by pressing MENU, then press DN to copy the row below.

It might be necessary to re-bind the remote control to the receiver, here is how to do it:

http://youtu.be/5ygCbdR4FCE

How to perform radio calibration:

http://copter.ardupilot.com/wiki/initial-setup/configuring-hardware/#Calibrate_radio_control