Official OMPHOBBY OFS3/OFS3+ EdgeTX Files for EdgeTX Transmitters with ExpressLRS


Change Log
Revision 0 (R0) (13/01/2025)
	• Initial release



Revision 1 (R1) (27/06/2025)
TX16S and Zorro:	
	• Renamed files to "OMPHOBBY OFS3" resp. "OMP OFS3", as they can be used for all OFS3 models
	• Updated model files to use new CRSF sensors for RPM, Temperature, Cell Voltage
	• Added calculated power sensor for tracking wattage
	• Based low voltage alarm on single cell voltage for more granular control (Requires minimum OFS3 12.52, ExpressLRS 3.5.6 and EdgeTX 2.11.2!)
	• Added talking switches (uses latest EdgeTX sound files)
	• Changed lowest RPM to better suit M2 V3 PRO
TX16S Only:
	• Updated model picture to display an M2 V3 PRO
	• Renamed TX16S model file for clearer naming
	• Restructured telemetry pages for clearer information delivery and use of new sensors
	• Telemetry pages now use theme colors to display proper contrast on any background



Revision 2 (R2) (24/10/2025)
Color LCD and Monochrome:
	• Renamed "TX16S" to "Color LCD" and "Zorro" to "Monochrome" to indicate compatibility with all EdgeTX radios
	• Added switch mapping for Rescue Mode (Requires OFS3 version 13.95, please read the OFS3 User Guide!)
Color LCD:
	• Rearranged switch defaults for Color LCD (TX16S), momentary switch now toggles Rescue Mode
	• Fixed switch warning for throttle switch
Monochrome:
	• Added switch warnings for arm and throttle switches

Revision 2.1 (R2.1) (29/10/2025)
Monochrome:
	• Fixed telemetry screen
	• Fixed telemetry warning on EdgeTX 2.11.3



Revision 3 (R3) (03/03/2025)
Color LCD and Monochrome:
	• Added Bat% telemetry sensor
	• Changed capacity warning method to Bat% sensor. Minimum OFS3 Version 14.70 required!
	• Added Bat% callout to telemetry switch
Color LCD:
	• Changed model image to include M1 V3 PRO and increased resolution to 800x480, image name M1M2V3.jpg
	• Adjusted telemetry screens slightly
Monochrome:
	• Adjusted telemetry screen to show more useful information

Revision 3.1 (R3.1) (11/04/2025)
Color LCD:
	• Added model images for all variants of M2 V3 PRO/SPORT and M1 V3 PRO
	• Renamed model memory to 'OMPHOBBY OFS3 so it will appear at the top of the list for convenience
General:
	• Made various improvements to this README document

Revision 4 (R4) (16/07/2025)
Color LCD and Monochrome:
	• Changed telemetry ratio requirement to 1:32 for use with latest OFS3 update version 17.17
	• Changed timer reset to trigger with telemetry connect instead of disarm


⚠WARNING⚠
• These EdgeTX model memories are offered as-is, should be understood as recommendations and may not suit every pilot's needs.
• Only use these files if you downloaded them directly from www.omphobby.com.
• Model files hosted on 3rd party websites are entirely outside OMPHOBBY's control.
• OMPHOBBY has no control over, and assumes no liability for the use of these EdgeTX model files and the products used with these files.
• Failure to use the minimum firmware versions for EdgeTX, ExpressLRS and OFS3 as listed below may result in improper function of these model memories.
• Always consult the OFS3 User Guide found on omphobby.com for instructions on safely operating OFS3 equipped models.
• These model files may be updated without notice. Always check for the latest version on omphobby.com.
• Installation instructions can be found on the internet. The most common methods will be described below in "Installation Notes", but may not apply to all radios.



System Requirements
• OFS3/OFS3+ Version: 	17.17 or later
• Transmitter Models: 	EdgeTX Color LCD or Monochrome ExpressLRS Transmitter
• Radio Module Type: 	ExpressLRS
• Receiver Protocol:	CRSF (These model memories are NOT compatible with S.BUS, F.Port, SRXL2 or DSM outputting receivers of any kind)
• EdgeTX Version: 	2.11.2 or later
• ExpressLRS Version: 	3.5.6 or later

ExpressLRS Settings
	• Packet Rate: 	333 Hz Full
	• Telem Ratio: 	1:32
	• Switch Mode: 	8ch
	• Model Match: 	On (Recommended for safety, set your receiver ID accordingly. Default is 0)



Installation Notes:
	• Color LCD users place the model##.yml file found in [Color LCD -> MODELS] into their radio storage's MODELS folder and rename it from model##.yml to an unoccupied number. 
		• For example, the user may have model1.yml, model2.yml and model4.yml, then the file may be named model3.yml or model5.yml, etc.
		• If the file is renamed using the radio's internal file browser, the radio must be rebooted for the model memory to show up
		• Model images from [Color LCD -> IMAGES] must be copied to the radio's IMAGES folder and can then be selected from within the model memory.
	• Monochrome users place the OMP OFS3-yyyy-mm-dd.yml file found in [Monochrome -> BACKUP] into their SD Card's BACKUP folder and restore it into a free model slot on their transmitter.

	• After the model memory is installed, open the ExpressLRS Lua script and enter the correct configuration stated above under "ExpressLRS Settings", and bind the model.
		• Binding instructions can be found in the OFS3 User Guide, or under https://www.expresslrs.org/quick-start/binding/.
		• Should the receiver blink 3x after binding switch Model Match OFF and ON again while the model is powered to assign the correct ID set in your model memory.



General Notes:
	• These model files represent OMPHOBBY's recommended settings for use with OFS3 and OFS3+ in the M1 V3 PRO, M2 EVO MK2, M2 V3 PRO and M2 V3 SPORT.
	• Both model files are compatible with both Proportional Throttle and Software Throttle modes.
	• Warnings use telemetry return for indicating the model's battery status to the user.
		⚠ Your receiver's RX must be connected to OFS3's TX for this to work.
	• These setups are designed to utilize an arming switch for added safety.
	• Timer 1 is set up to count upwards, for you to evaluate your total flight time. 
		•Timer 1 starts and stops with the motor. 
		•Timer 1 is reset upon disarming.
	• Used battery capacity and voltage can be called out anytime by toggling a momentary switch.



Customization Notes:
	• All switches are defined in INPUTS. Each input is used throughout the model file. Do not change switch assignments anywhere else.
	• Switch directions can be reversed by changing Weight sign in INPUTS (-100/+100). 
		⚠ Do not reverse channels 5-9 in OUTPUTS under any circumstances. 
		⚠ Do not change INPUTS weights away from 100.
	• Expo is not enabled by default, it is recommended to set expo through the OMPHOBBY app.
	• Percentages for Proportional Throttle RPM1, RPM2 and RPM3 can be changed in MIXES under the corresponding CH6 lines, by changing their Weight.
	• The pre-set Proportional Throttle values correspond to 60% (3720 RPM), 75% (4650 RPM) and 85% (5270 RPM) in Software Throttle mode. Refer to the OFS3 User Guide for throttle mapping.



Telemetry Notes:
	• Default telemetry warnings are set for use with battery percentage, calculated from the capacity set in the OMPHOBBY app.
		• Bat% below 16%: Capacity will be spoken every 5 seconds with gentle vibration
		• Voltage below 3.15V per cell for 1.5s: Voltage will be spoken every 2 seconds with harsh vibration.
	• Telemetry screens are already set up with useful information:
		• Instantaneous and minimum battery voltage
		• Instantaneous and maximum battery current
		• Instantaneous and maximum rotor RPM
		• Battery capacity used and ESC temperature (Monochrome) / Instantaneous power and peak power (Color LCD)
		• Color LCD ONLY: Top bar displays mAh, full battery voltage, temperature, and minimum link quality
		• Color LCD ONLY: Additional screens show throttle% vs. RPM, vehicle attitude, ExpressLRS data, channels and model info.
	• To reach the telemetry screen:
		• Monochrome: Press the TELE button on the main screen
		• Color LCD: Page over to the right once for power info, twice for RPM info, three times for attitude info, four times for ExpressLRS info.
	• Telemetry resets automatically upon battery swap, or more precisely, when telemetry connects successfully.
	• Warning thresholds can be customized in Logical Switches. 
		• L20 triggers the voltage warning
		• L21 triggers the percentage warning
	• Telemetry warnings only activate when ARMED and the motor is ON. Warnings are disabled if the model is disarmed or the motor is off, or both.



Miscellaneous notes:
	• Trims are intentionally disabled.
	• Rescue Mode and Attitude Mode occupy the same channel. This channel is mapped to two switches. 
		• Use the switch appropriate for the mode enabled on your model.
	• As of the latest revision, model images for all M1 V3 and M2 V3 variants and colors are included.
	• A combined model image for M2 V3 PRO in orange and M1 V3 PRO in pink is included
	• More model Images for Color LCD can be found on https://www.skyraccoon.com/aircraft/OMP-Hobby_M2-EVO-MK2_OMP-MK2-O
		• OMPHOBBY is not affiliated with AIR-RC. We do appreciate their work though!
	• The Color LCD model file features some additional screens:
		• Throttle percentage and rotor RPM side-by-side
		• Vehicle attitude and control channels side-by-side
		• ExpressLRS transmission instantaneous performance and extremes



Default switch assignment for Monochrome, default optimized for RadioMaster Zorro:
	• ARM (Arming)		SE (Switch away from user is ARMED)
	• THR (Throttle)	SF (Switch away from user is FLY, towards user is OFF)
	• ATT (Attitude Mode)	SC (Switch towards user is ATTITUDE MODE)
	• RPM (Rotor Speed)	SB (Switch towards user is HIGHEST RPM, applies to Proportional Throttle and Software RPM)
	• TEL (Speak Telemetry)	SD (Switch depressed speaks used capacity and voltage once)
	• RSQ (Rescue Mode)	SA (Switch depressed triggers Rescue Mode auto-sequence)

Default switch assignment for Monochrome, default optimized for RadioMaster TX16S:
	• ARM (Arming)		SA (Switch away from user (up) is ARMED)
	• THR (Throttle)	SG (Switch away from user is FLY, towards user is OFF)
	• ATT (Attitude Mode)	SC (Switch towards user (down) is ATTITUDE MODE)
	• RPM (Rotor Speed)	SE (Switch towards user is HIGHEST RPM, applies to Proportional Throttle and Software RPM)
	• TEL (Speak Telemetry)	SF (Switch towards user speaks used capacity and voltage once)
	• RSQ (Rescue Mode)	SH (Switch towards user triggers Rescue Mode auto-sequence)

Currently, Pre-start Check Switch Warnings cannot be defined to be triggered by switch assignment through INPUTS. If you reassign your Arm and Throttle switches, please adjust the switch warnings accordingly to match your new switches.



Enjoy!
Team OMPHOBBY
