Radiomaster TX12 Radio setup for OMPHobby M1 & M2 EVO (EdgeTX)

This guide will show you how to setup your Radiomaster TX12 or any EdgeTX / OpenTX Multi-protocol radio for your OMPHobby M1 or M2 Helicopter.

If you purchased a RTF Combo or TX12 Radio from us, this setup is already done for you.

If you are using OpenTX we recommend that you upgrade your TX16S to EdgeTX.

NOTE: TX12 C2500 supports the following radio protocols (Futaba S-FHSS, OMP, Frsky D16 / D8 / X / X2, Esky, Corona, Hitec, RadioLink, Graupner HoTT, Skyartec)

EdgeTX model configuration files

Configuration File

Download OriginHobbies EdgeTX Model Configuration File. (right click and Save as)

The Configuration contains all the models listed below. Please see end of this page for Revision history of the Configuration files.

Model names in Configuration file

Model Name	Model	Receiver	Protocol
EVO FUT	M1 EVO & M2 EVO	Built-in / OSHM2055	S-FHSS
EVO OMP	M1 EVO & M2 EVO	Built-in	OMP
EVO XSR	M1 EVO & M2 EVO	Frsky R-XSR	FrskyX2 D16 (EU-LBT)
EVO R81	M1 EVO & M2 EVO	Radiomaster R81	Frsky D8

Loading Models from configuration file to Radio

1. Download and install Edge Companion tool on PC/Mac/Linux.
2. Start the Companion tool.
3. Power ON the Radio and Connect the Radio to USB port of your computer. Select “USB Storage mode“
4. Get the models from the Radio to Companion tool.
   Select Read/write->Read current models from radio.
5. Open the OriginHobbies configuration file you downloaded from above. There are many models in the configuration file. Copy the models you need from OriginHobbies configuration window to your Radio’s configuration window.
6. Save the models from the Companion tool to the Radio.
   Select Read/write->Write current models to radio.
7. Safely remove the USB disk drive.
8. Disconnect USB.

Receiver type

OMP protocol

OMPHobby M2 comes with built-in receiver that supports OMP Protocol. In OMP Protocol, the throttle curve is fixed in the helicopter and cannot be adjusted at the Transmitter Radio. OMP protocl supports telemetry for Helicopter battery voltage. Normal, Idle-up1 and Idle-up2 flight modes are assigned by a switch on the Radio transmitter.

Choose model EVO OMP from the configuration file.

Channel	Function	Direction
1	Aileron
2	Elevator
3	Collective Pitch
4	Rudder
5	Throttle Hold
6	Flight mode (Normal/Idle1/Idle2)
7	Stability mode (ON/OFF)	Inverted

S-FHSS

The helicopter supports one one SBUS port. You can connect a SBUS compatible S-FHSS receiver to this port. It will override the internal OMP receiver. e.g. OSHM2055 S-FHSS micro receiver

Choose model EVO FUT from the configuration file.

Channel	Function	Direction
1	Aileron	Inverted
2	Elevator
3	Throttle
4	Rudder	Inverted
5	Stability mode (ON/OFF)	Inverted
6	Collective Pitch

NOTE: If you are not using S-FHSS (Futaba) receiver on the SBUS port then choose the correct the RF Protocol and Protocol Sub Type in your TX16S Model Setup -> Internal RF

Radiomaster R81

The Radiomaster R81 Nano receiver is a full range receiver that is compatible with M1/M2 helicopter. You will need to use it with the SBUS receiver adapter to connect it to the helicopter to the S-BUS port.

Choose model EVO R81 from the configuration file.

Channel	Function	Direction
1	Aileron
2	Elevator	Inverted
3	Throttle	Inverted
4	Rudder
5	Stability mode (ON/OFF)
6	Collective Pitch	Inverted

Frsky D16 protocol (R-XSR)

The Frsky R-XSR is a great little full range receiver that has telemetry features. It is recommended to use it along with the Juice Guage sensor to get Battery voltage, current and signal strength telemetry.

Note that R-XSR receiver supports 2 modes on SBUS out pin (SBUS mode and CPPM mode). This pin should be in SBUS mode to work with M1/M2 helicopter. The blue LED is turned ON for SBUS mode and OFF for CPPM mode. Press the bind button for 4 seconds to switch between the two modes.

Choose model EVO XSR from the configuration file.

Channel	Function	Direction
1	Aileron
2	Elevator	Inverted
3	Throttle	Inverted
4	Rudder
5	Stability mode (ON/OFF)
6	Collective Pitch	Inverted

Radio switch Layout

Function	Switch
Timer reset	SD
Throttle hold	SC
Flight mode (↑Normal, –Idle-up1, ↓Idle-up2)	SB
Dual rates (↑100%, -85%, ↓75%)	SE
Rescue Button	SA
Stability mode (auto level) ON/OFF	SF
Volume control	S2 slider

Other functions

• Flight timer: 4.5 mins, Haptic countdown at 10 seconds
• To reset flight timer, Throttle hold must be active and then Timer reset button will reset timer.
• Voice call on Throttle cut, Throttle active, Flight modes and Stability mode.

Binding and pre-flight Check

Binding

1. Ensure batteries of your Helicopter and Transmitter are sufficiently charged
2. It is a good idea to remove the main and tail blades of the helicopter to prevent any injury if motors start accidentally.
3. Choose the correct model on the TX12.
4. Ensure throttle hold is engaged.
5. Plug in the battery into the Helicopter and wait for beeps.
6. Press and hold BIND button on helicopter. Blue LED will start flashing. Release the BIND button.
7. On the Radio, go to Model setup. Press MDL button
8. Scroll down to INTERNAL RF section
9. Check that the RF Protocol is selected. If not you have chosen the wrong model.
10. Press the BIND button
11. During binding process, the Blue LED will flash rapidly. Once binding is complete the Blue LED will be steady.

Pre-flight check

• The Red LED indicates Auto-level mode status.
  Red LED blinking = Auto-level OFF.
  Red LED steady = Auto-level ON.
  Toggle auto-level switch and see it is switching between Auto-level ON and OFF.
• Keep Auto-level OFF.
• Move the aileron/elevator sticks and check that the swash plate is moving correctly (left-right and front-back)
• Move the collective pitch stick and check that the swash plate is moving correctly (up & down)
• Disengage both throttle hold and throttle hold fail safe switches, give some collective and check that main rotor is spinning.
• Engage any one throttle hold and check that main rotor stops.
• Engage both throttle holds and check that flight timer resets.
• Now you can put the rotor blades back on and do a test flight. Good Luck!

Model Customization

You can customize the model configuration as per your linking. Please refer to explanation of different settings.

Switch Assignment

To change the switch assignments Navigate to Model->Input Page

Scroll to the Function whose switch you want to change. e.g. To change rescue mode switch scroll to Rsq input. Press and hold the Scroll wheel and select EDIT.

Scroll to Source and press the scroll wheel button. Then scroll till you find your desired switch. Press the scroll wheel button to confirm.

Throttle curves

For OMP Protocol, there are no throttle curves on the Radio Transmitter as throttle curve is fixed inside the Helicopter. For other protocols, the below curves are used.

Curve	Curve name	Function
CV2	TCn	Throttle curve for Normal mode
CV3	TC1	Throttle curve for Idle-up 1
CV4	TC2	Throttle curve for Idle-up 2

Pitch curves

For OMP Protocol, there are no pitch curves on the Radio Transmitter as pitch curves are fixed inside the Helicopter. For other protocols, the below curves are used.

Curve	Curve name	Function
CV5	PCn	Collective pitch curve for Normal mode
CV6	PC1	Collective pitch curve for Idle-up 1
CV7	PC2	Collective pitch curve for Idle-up 2

Dead band curve

OMP Helicopters have some deadband at center stick at Aileron and Elevator. The dead band curve is mixed with Aileron and Elevator controls to get rid of the dead band. Curve CV12 (DBD) is used as dead band curve.

Config file Revision history

v1.6: 2023-05-07
-Added model for Frsky XSR telemetry receiver
-ALL: Set fail safe to no pulses
-ALL: moved dead band curve to input screen
-ALL: added sound for low/med/hi rates
- Added backlight control to S1 slider

v1.5: 2023-02-28
-ALL: Added Dual rate switch SE. Timer reset to SD.

v1.4: 2023-02-18
-R81: Added EVO R81 model

v1.3: 2023-01-19
-FUT: Change normal mode throttle curve to 0,5,5,5,5. We want governor to be engaged throughout except full negative.

v1.2: 2022-12-28
-Use shorter model names so it shows properly on screen.
-Removed DSM model as TX12 doesn't support it
-OMP: Added Telemetry screen

v1.1: 2022-12-28
-OMP: update Flight mode sound function to use Logical state instead of SE switch.

v1: 2022-12-27
Initial version based off TX16S v7.2.etx