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Sep 07, 2020, 08:07 PM
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New Product

New FrSky X20, X20S & X20HD Tandem and ETHOS


New – FrSky X20, X20S & X20HD Tandem and ETHOS 24 Channel System

Review

I’ve been following the progress of the FrSky Tandem system going back to the first version picture published in April 2019 and it did not have much appeal to me. Then in May 2019, the all new Tandem design 3D rendering really appeal to me. Between then and receiving a test unit, about a week ago, I had the opportunity to follow the progress of the system with pictures and simulators. But, I know from past experience, pictures never quite fully prepare you to actually seeing a system firsthand holding it in your hands.

First Impression

In taking it out of its box and unwrapping it, my first impression was that it was smaller than I expected it would be from the pictures. It has a really nice feel in your hands. The small size, the gimbal positions at the very edge of the case, and the black side and back rubber grip positions make it very comfortable to hold and use. The ergonomics for using the side sliders and switches are very good. I like the shape of the case design and its fine details.

System Size and Weight

The system size and weight of less than two pounds with batteries is excellent. The width of 8” or about the same as a Q X7 and at 7 7/8” it is only about 1/4” taller than the Q X7 with its antenna folded and that is impressive. The main body of the case not including the back rubber grips is only 1 9/16”. The X20 is only .33lb more than a QX 7 SE ACCESS. A lot of X20 electronics engineered to fit in the small space of the system. FrSky is using some new technology that allows them to compress the electronics into a smaller space.

Its small size for a top display, light weight, and the way it feels in your hands make it a very desirable system.

As stated above the main body of the case is 1 9/16" thick. The back rubber grips are attached to the back outside area of the case. The case in this area is angled toward the front of the case making the outside case edge about 1 1/16". With the angled area the thickness of the grips do not add their full thickness to the total thickness of the case. The grips are thicker at the top. The grips are hollow and a formed portion of the case protrudes into them for support

Thickness added to the total case thickness by the grips.

Grip at top inside plus 5/16". Grip at outside edge plus 3/32".
Grip at bottom inside plus 3/16". Grip at outside edge minus 1/8".

Weight Numbers For Reference

0.85 lb X-Lite (with batteries and antenna)
1.31 lb X9 Lite (Li-ion)
1.62 lb Q X7S ACCESS (Li-ion)
1.72 lb X9DP SE ACCESS (Lipo)
1.76 lb Q X7 (NiMh)
1.84 lb X9DP ACCST (NiMh)
1.95 lb X20 (Li-ion)
2.03 lb 9C Futaba
2.14 lb X20S (Lipo)
2.16 lb X10
2.20 lb X10S
2.38 lb 16&18SZA Futaba
2.39 lb 12FG Futaba
2.54 lb Kraft 7C
2.65 lb 18MZA WC Futaba
2.87 lb X12S
2.87 lb Jeti

Touch Display

I really like the new 800X480 mat finish bezel-less touch screen display. It is very stylish looking and adds a modern look to the system. Having it located as close as possible to the top of the gimbals reduces the height of the system adding to the compactness of the system.

The user can select, add and define different screens, number of screens, cells, format, content, etc.

The touch screen is very responsive, displays beautiful colors, has an extraordinarily high viewing angle all the way down to 90 degrees and can be easily viewed in direct sunlight even with polarized sunglasses. The color depth on the X20 and Horus systems is 16bits for 65,536 colors.

Touch or the navigation controls can be used or a mix of both.

The touch display on my first black X20 has a mat finish. The next group of systems made for beta testing (my blue system) have a gloss finish display that are not as good in direct sun light as the mat display because of the refection from the gloss finish. The final production systems have a mat finish display.

Gimbals

Many of the systems from other vendors nowadays are mostly plastic, even some of the high end systems. The X20 aluminum M gimbal mounting plate with CNC machining and CNC machined aluminum gimbal ring add the look of a quality system. I especially like that the machined aluminum surface shows in its natural aluminum state. Really stands out in beautiful contrast to the color of the system.

The gimbal position at the very outside edge of the case is excellent.

The gimbal stick tension can be adjusted through two removable covers on each back rubber grip.

The gimbal has a hollow 4mm stick shaft with a hole in the gimbal mechanism for stick end switches. No extra switch ports are available, but the back case push button switches can be easily connected to for a switch source.

The aluminum gimbal rings are 5/64" thicker than the X10S moving M mounting plate 5/64" deeper into the case.

X20 Gimbal Types

X20 M11 Gimbal

1. CNC front mounting plate
2. Plastic mechanics
3. Four ball bearings
4. Travel 60 degrees (Can be adjustable 45 degree vertical movement with 45 degree adjuster)
5. Analog Hall Effect sensors

The gimbals have the usual nice feel and precision of the M Hall Effect gimbals.

Gimbal adjustments https://www.rcgroups.com/forums/show...postcount=6782

X20S and X20HD MC11 Gimbal

1. CNC Front mounting plate and frame
2. All CNC mechanics
3. Ten ball bearings. Four bearings on each X Y axes for a total of eight. One bearing on each centering bar pivot point for a total of two.
4. Travel 60 degrees or adjustable 45 degree vertical movement with included 45 degree adjuster.
5. Rotatable 8 degrees CW or CCW.
6. Analog Hall Effect sensors

X20S and X20HD Gimbal Adjustments and Stick Mode Change https://www.rcgroups.com/forums/show...postcount=6787

Changing Stick Mode

1. In Sticks screen change mode.
2. Disconnect battery
3. Remove four screws holding case back and remove back. The 900m antenna is located in the case handle so just rotate case away from gimbals without removing 900m antennal coax connection.
4. Mode hardware change. Remove the machine screw holding the existing throttle centering arm up and move to other gimbal. Back off brake and ratchet adjustment.
5. On new throttle, adjust ratchet and brake adjustment as desired.
6. Replace case back being careful that the 900m coax is positioned away from gimbals and connect battery.

X20 gimbal adjustments https://www.rcgroups.com/forums/show...postcount=6782
X20S and X20HD Gimbal Adjustments and Stick Mode Change https://www.rcgroups.com/forums/show...postcount=6787

Navigation Controls

The left navigation control does RET, SYS, MDL, DISP and Page UP/Down. The right navigation control does scroll and enter. The navigation controls or touch screen can be used.

Connections

There is an area behind the base of the display for the external 2.4gig antenna, trainer jack, S.Port, SD card, USB-C connection (PC and Li battery balance charging), headphone jack and external 900mHz antenna.

Switches, Pots and Sliders

There are six three position switches, one two position and one spring loaded two position.

There are six mode buttons on the front of the system that latch on logically when pressed and illuminate via LED back lighting. Also two push buttons on the back near the grips.

Two front pots, one front slider and two side sliders.

Bluetooth Audio X20S and X20HD

How to use Bluetooth Audio https://www.rcgroups.com/forums/show...postcount=6985

TD-ISRM 2.4gig/900m RF

The system has a newly designed TD-ISRM 2.4gig/900m RF board that has a 2.4gig section and a 900mHz section. Two internal 2.4gig antennas are located in case area at the very top and side and one external antenna mount behind the display base. The 900mHz has one internal antenna in the handle and one external antenna mount behind the display base.

FCC is 915MHz and EU is 868MHZ and antenna is different for FCC and EU.

The TD-ISRM supports using 2.4gig receivers, 900mHz receivers (or a mix of both simultaneously) and Tandem Dual Band receivers.

Up to 24 channels for 2.4gig ACCESS, 16 channels for D16 and 16 channels for 900mHz ACCESS.

Important, there is new receiver firmware for non-Archer ACCESS receivers to make them compatible with the X20. X20S and X20HD Tandem systems. It can be downloaded from the ETHOS website http://ethos.frsky-rc.com/

X20 900m FLEX

The X20 FLEX firmware has the following features.

1. FLEX 915m or 868m.
2. ACCESS mode can have a mix of three 900m or 2.4 receivers.
3. D16 ACSST mode 2.4 only.
4. TD mode to use with FrSky Dual Band receivers.

External Module

There is a connection for a FrSky external Lite version RF module.

Currently the X20 ETHOS system supports the following external modules. FrSky’s XJT lite, R9M Lite, R9M Lite (ACCESS), R9M Lite Pro (ACCESS) and PPM.

FrSky has a program for manufacturers that wish to have their module supported by the X20 ETHOS system. They just need to ask for support from FrSky for system integration.

The module must meet the laws that govern RF module devices and the module hardware and firmware programming must be the sole Intellectual Property of the company manufacturing the module. Devices that involve Intellectual Property theft would not qualify.

The Immersion RC company is currently going through the process for their Ghost Lite style module

Battery

The system has a built-in 2S Li balance charger with a USB-C connection for a user provided external 2amp USB power source. The batteries are accessible through a battery hatch in the lower back area of the system.

Depending on the Lipo shipping rules in each country the systems will ship with a 4000mAh Lipo. Or if wanted a 2S 18650 3500mAh Li battery pack can be used. A standard 2S connector is used.

The battery compartment is 84.5mm by 41.5 high and 20mm deep.

Color Themes

Currently there are four color themes.

X20

https://www.frsky-rc.com/product/tandem-x20/

Blue case with natural color CNC aluminum gimbal rings.
Black case with the CNC aluminum gimbal rings black.

X20S

https://www.frsky-rc.com/product/tandem-x20s/

Blue case with black color CNC aluminum gimbal rings. Rings have 8 degree scales on them for gimbal rotation.
Black case with the CNC aluminum gimbal rings black. Rings have 8 degree scales on them for gimbal rotation.

Wav Sound Level Test X10S and X20

Sound Level Meter distance from front of radio 11.5”
Meter Range Setting 70DB
Highest DB found is recorded
Using same exact Wav file

A Weight
X10S 65DB
X20 65DB

C Weight
X10S 66DB
X20 67DB

Range Check X20S

The range check test was done in a residential neighborhood and compares well with other test done in same location with other ACCESS systems with internal antennas. The test area most likely has a high concentration of Wi-Fi and results could be different depending on the test area.

An Archer R10 Pro was used for testing and placed on a test stand 3.5 feet high. The X20S was moved 300 feet from R10 Pro and held in normal flying position facing the direction of the R10 Pro. The X20S was held steady in the flight position and the data logging was turned on to record the test RSSI and VFR in normal RF mode and RF test mode.

After the data logging test was complete the X20S was placed in normal RF mode and turned side-to-side 90 degrees to the R10 Pro and no significant RSSI change was seen.

Normal RF - Internal Antennas

RSSI 71 – 73 (average 71.8)
VFR 99 – 100 (average 99.96)

Range Check RF - Internal Antennas

RSSI 35 – 39 (average 37.76)
VFR 29 – 59 (average 45.72)

Tandem Dual Band Receivers

See comments about Tandem Dual Band receivers in the FrSky ad attached below. They work with the X20 dual band mode.

ETHOS

ETHOS definition, “the characteristic spirit of a culture, era, or community as manifested in its beliefs and aspirations”.

The ETHOS touch screen operating system developed for the X20 was started more than a year ago on a blank sheet of paper. It is an all new OS that is designed for touch or navigation controls use or a mix of both. Some of the brightest and most experienced RC radio OS developers are involved in its creation.

ETHOS Website

The ETHOS website http://ethos.frsky-rc.com/ The following is available on the ETHOS website.

1. Links to the newest ETHOS firmware and SD contents for the X20 and Horus ISRM systems. Note: SD contents are only released when they change thus they sometimes are found in older releases,
2. ETHOS simulator.
3. Bootloader for the X20 and Horus ISRM systems.
4. The DfuSe_Demo bootloader installation PC tool
5. How to video on X20 firmware update and bootloader installation for Horus ISRM system.
6. Link to the FrSKy GitHub for reporting issues and reporting issues.
7. Important new receiver firmware for non-Archer ACCESS receivers to make them compatible with the X20. X20S and X20HD Tandem systems. After the update they continue to be compatible with the other FrSky ACCESS transmitters.

Feel free to comment and ask questions and I’ll do my best to provide answers.

To be continued…

Mike
Last edited by Jet_Flyer; Jun 04, 2021 at 10:06 AM.
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Sep 07, 2020, 08:08 PM
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Index

ETHOS Website

The ETHOS website http://ethos.frsky-rc.com/ The following is available on the ETHOS website.

1. Links to the newest ETHOS firmware and SD contents for the X20 and Horus ISRM systems. Note: SD contents are only released when they change thus they sometimes are found in older releases,
2. ETHOS simulator.
3. Bootloader for the X20 and Horus ISRM systems.
4. The DfuSe_Demo bootloader installation PC tool
5. How to video on X20 firmware update and bootloader installation for Horus ISRM system.
6. Link to the FrSKy GitHub for reporting issues and reporting issues.
7. Important new receiver firmware for non-Archer ACCESS receivers to make them compatible with the X20. X20S and X20HD Tandem systems. After the update they continue to be compatible with the other FrSky ACCESS transmitters.

Hardware

X20S and X20HD Bluetooth Audio https://www.rcgroups.com/forums/show...postcount=6985

X20 gimbal adjustments and stick mode change https://www.rcgroups.com/forums/show...postcount=6782

X20S and X20HD Gimbal Adjustments and Stick Mode Change https://www.rcgroups.com/forums/show...postcount=6787

Battery compartment - using 5000mAh battery https://www.rcgroups.com/forums/show...&postcount=415

UI speed and sound levels https://www.rcgroups.com/forums/show...postcount=1777

USB wall wart for USB balance charging https://www.rcgroups.com/forums/show...postcount=1842

FrSky program for manufacturers that wish to have their module supported by the X20 ETHOS system. https://www.rcgroups.com/forums/show...postcount=2095

Using iRangeX PPM RF module with X10S ISRM, X10S Express and X12S ISRM https://www.rcgroups.com/forums/show...postcount=7071

Programming

Using ETHOS Throttle Cut and Low Position trim https://www.rcgroups.com/forums/show...postcount=8253

Using the new Edge condition for switches https://www.rcgroups.com/forums/show...postcount=7953

Mike Shellim's F3F templates for ETHOS https://www.rcgroups.com/forums/show...postcount=7557

ETHOS Touch Screen Operating System How To https://www.rcgroups.com/forums/show...73&postcount=3

FrSky ETHOS Gear Door Sequencer Configuration https://www.rcgroups.com/forums/show...postcount=3621

Setting up a Big 3D gasser with dual aileron servos on each wing (no flaps), 2 elevator servos, and 1 rudder servo, by eqtrian. https://www.rcgroups.com/forums/show...postcount=5847

How-To create your own X20 Ethos model images in Windows, by eqtrian.
https://www.rcgroups.com/forums/show...postcount=5781

Programming helicopter by RomeoOscar https://www.rcgroups.com/forums/show...postcount=3044

Creating a model in an empty mixer without using the model creation feature by aerografixs

DSC 0245 (12 min 27 sec)


Dual rates, expo and differential by aerografixs

DSC 0246 (3 min 14 sec)


Quadcopter setup by Macalucifer FPV

https://www.youtube.com/watch?v=2M3FZI3dfGo

System Reviews

X20 and ETHOS video system review by Rob Thomson

FRSKY TANDEM X20 | FIRST LOOKS (20 min 0 sec)


X20 and ETHOS video system review by RomeoOscar

My second ETHOS heli (1 min 7 sec)


X20 and ETHOS video system review by Lior Zahavi from RC Turbine Jets. Lior can be found on the large social media site.

FrSky X20 Tandem Tx live video demo (1 hr 43 min 23 sec)
Last edited by Jet_Flyer; Yesterday at 05:08 PM.
Sep 07, 2020, 08:08 PM
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ETHOS Touch Screen Operating System

ETHOS System

ETHOS is an all new OS and overcomes some of the limitations of other OS systems, especially resources.

ETHOS resources are almost infinite, but for now the individual limit for Flight Modes, Logic Switches, Special Functions, Rates and Sensors have each been set at 100. Mixes is 200. The number is arbitrary at this point just to provide some protection.

Logic Switches inputs includes Analogs, Switches, Trims, Channels, Timers, Gyro, Trainer, Telemetry and Special. Special Functions include None, Always On, Switch Position, Function Switches, Logic Switches and Trim Position.

There are 18 math functions in Logic Switches. Currently A=B, A>B, A<B functions are being integrated with other functions.

The number of models that can be programed is unlimited.

Lua scripts will be supported in the first production release.

Global variables are included.

ETHOS Simulator

Model files are stored in, Local Disk (C: ) Users/(your user name)/.ethos/models

ETHOS Systems USB Connection To PC Modes

1. ETHOS System power off USB connection to PC is DFU mode for flashing bootloader.
2. ETHOS System started with enter key held down then power on USB connection to PC is bootloader mode for reading and writing files to SD card and on the X20HD/X20S/X20 the flash memory.
3. ETHOS System power on USB connection to PC is joystick mode.

ETHOS Website

The ETHOS website http://ethos.frsky-rc.com/ The following is available on the ETHOS website.

1. Links to the newest ETHOS firmware and SD contents for the X20 and Horus ISRM systems. Note: SD contents are only released when they change thus they sometimes are found in older releases,
2. ETHOS simulator.
3. Bootloader for the X20 and Horus ISRM systems.
4. The DfuSe_Demo bootloader installation PC tool
5. How to video on X20 firmware update and bootloader installation for Horus ISRM system.
6. Link to the FrSKy GitHub for reporting issues and reporting issues.
7. Important new receiver firmware for non-Archer ACCESS receivers to make them compatible with the X20. X20S and X20HD Tandem systems. After the update they continue to be compatible with the other FrSky ACCESS transmitters.

File Storage

The X20 series uses a SD card that is 32gig or less formatted fat32. I'm using a SanDisk Ultra Micro SDHC Class 10 16gig card. Files will be on the FRSky website.

The X20 uses an internal virtual USB flash memory drive and the SD card for file storage. Some of the folders the system will create if the user does not create them like Logs, Models and Screenshots. The Firmware folder I created to keep my device firmware like receivers, etc.

The following is how the files are currently arranged on the X20 systems. The audio folder is listed twice because it is showing the paths.

USB Drive path

USB Drive (drive letter)/bitmaps/system (the bit maps that are used for the screen displays and icons are stored here)

SD Card paths

SD Card (drive letter)/audio/ (user sound files)
SD Card (drive letter)/audio/en/system (system sound files)
SD Card (drive letter)/bitmaps/user/ (user model images. Image size for the main X20 screen is 300x280 and 180x166 for the X10)
SD Card (drive letter)/Firmware/ (Store firmware for flashing receivers and other devices)
SD Card (drive letter)/Logs/ (Data logging stored here)
SD Card (drive letter)/models/ (Model files stored here)
SD Card (drive letter)/screenshots/ (Screenshots stored here)
SD Card (drive letter)/radio.bin (the radio file is created by the system when first used and stores system settings)
SD Card (drive letter)/ (ETHOS firmware bin placed here to flash system. File is deleted by system after flash complete)

The Horus systems use only the SD card and the bitmaps are stored on the SD.

Flashing X20 ETHOS Firmware Updates

1. While holding Enter down press power on.
2. System displays "Bootloader".
3. Connect system to Windows PC using data USB C cable.
4. System displays "USB Plugged" and two File Explorer drive windows open on PC
5. Copy the ETHOS firmware.bin file to the SD card root. Name must be firmware.bin.
6. Eject both drives.
7. Disconnect USB cable.
8. System displays flash progress bar.
9. When flash complete power system OFF and then ON.

See "How To" video linked at bottom of the ETHOS website https://ethos.frsky-rc.com/

Without using USB connection

1. Remove SD card and copy firmware to the SD card root. Name must be firmware.bin. Install SD card.
2. While holding Enter down press power on.
3. System flashes firmware update.
4. Power system OFF then ON

Depending of the update new bitmap and sound files might be provided.

Installing ETHOS on Horus X10S/X10 Express, X10S/X10 ISRM and X12S ISRM

For the X10S/X10 and X12S systems FrSky is offering an update kit ISRM RF module that replaces the existing IXJT RF module.
Once installed the system can then use ACCESS 2.4gig receivers and also operate with ETHOS. Information on upgrade here. https://www.frsky-rc.com/product/acc...-kit-x10-x10s/

To install ETHOS the ETHOS bootloader needs to be flashed to the Horus system using a PC application. There are two common applications that can be used, DfuSe Demo and OpenTX Companion.

Installation using DfuSe Demo

The following files will be needed. Links to files and DfuSe Demo posted on ETHOS website https://ethos.frsky-rc.com/

1. SD card contents
2. bootloader.dfu for Express, X10S/X10 ISRM or X12S ISRM
3. firmware.bin for Express, X10S/X10 ISRM or X12S ISRM

1. Setup ETHOS SD card for system and include the ETHOS firmware file in the root. Name must be firmware.bin.
2. Connect Horus system (power off) to Windows PC with data USB cable.
3. Flash the ETHOS bootloader.dfu to the Horus using DfuSe Demo. Disconnect Hours from PC.
4. With the SD card in the system and while holding Enter down press power ON.
5. The system flashes firmware.
6. Then power OFF and ON.

See "How To" video linked at bottom of the ETHOS website https://ethos.frsky-rc.com/

Installation using OpenTX Companion

The following files will be needed. Links to files posted on ETHOS website https://ethos.frsky-rc.com/

1. SD card contents
2. bootloader.bin for Express, X10S/X10 ISRM or X12S ISRM
3. firmware.bin for Express, X10S/X10 ISRM or X12S ISRM

1. Setup ETHOS SD card for system and include the ETHOS firmware file in the root. Name must be firmware.bin.
2. Connect Horus system (power off) to Windows PC with data USB cable.
3. Flash the ETHOS bootloader.bin to the Horus using Companion (write firmware to radio icon). Disconnect Hours from PC.
4. With the SD card in the system and while holding Enter down press power ON.
5. The system flashes firmware.
6. Then power OFF and ON.

See "How To" video linked at bottom of the ETHOS website https://ethos.frsky-rc.com/

Updating ETHOS firmware X10S/X10 Express, X10S/X10 ISRM and X12S ISRM Firmware Instructions

Downloading and Updating

1. Download files and unzip
2. Copy the sound files from the download to the SD folder audio/en/system and overwrite existing files.
3. Copy the bitmap files from the download to the SD folder bitmaps/system and overwrite the existing files

Bootloader

ETHOS needs to have the new bootlader.bin flashed. Use the same process used when first installing ETHOS. Do this before installing the new firmware. Starting with ETHOS 1.0.1. and going forward the bootloader is unchanged.

Firmware Updates

1. While holding Enter down press power on.
2. System displays "Bootloader".
3. Connect system to Windows PC using data USB cable.
4. System displays "USB Plugged" and File Explorer drive window open on PC
5. Copy the ETHOS firmware.bin file to the SD card root. Name must be firmware.bin.
6. Eject drive.
7. Disconnect USB cable.
8. System displays flash progress bar.
9. When flash complete power system OFF and then ON.
10. System will prompt to create new model. (starting with ETHOS 1.0.1. models will convert on future updates)

Without using USB connection

1. Remove SD card and copy firmware to the SD card root. Name must be firmware.bin. Install SD card.
2. While holding Enter down press power on.
3. System flashes firmware update.
4. Power system OFF then ON
5. System will prompt to create new model. (starting with ETHOS 1.0.1. models will convert on future updates)

Flashing Firmware to Devices, Receivers and TD-ISRM

I have a "firmware" folder on my SD card where I keep device firmware, for receivers, TD-ISRM, etc.

1. Download the device firmware from the FrSky website and unzip it
2. Copy the firmware to the "firmware" folder
3. Using the ETHOS file manager navigate to the firmware file.
4. Long press n the firmware file and select the target device
5. Flash progress bar displays and flash takes place and ends with OK
6. Click on OK
7. Restart system (if TD-ISRM flashed)

ETHOS Main Screen

See screens posted below.

The default main screen has a section for a model image and three sections for timers. These screen sections are user configurable to display other widgets and there can be multiple user defined screens. The user can select from seven different screen configurations for each new screen with up to nine cells for displaying widgets. The widgets can display telemetry values, but also values from seventeen other different categories. Once the screens are configured with widgets they can be access using a touch swipe gesture or navigation controls. The top and bottom bar with their active icons remain with screens displayed.

Top screen bar.

The top bar displays the model name, flight mode on the left side and on the right side there are some unpopulated icon sections (on the screen shown), lock, RF, RSSI and battery icon. This area has some icons that are always displayed and other icons that are dynamically displayed when active, e.g. if 900mHz is active its icon displays. The flight mode name display area is also dynamic. If the flight mode feature is not being used and flight mode 0 is left with its default name the flight mode display name is not displayed.

Trim, pot and slider indicators

Trim shows a position number and the bar changes color to follow the trim position when moved off center. The trims have the normal beep that changes tone as the trim position moves. The pot and slider indicators change color to follow the position when moved off center.

Model Image

The model image size for the main X20 screen is 300x280 and 180x166 for the X10

Screen bottom

Icons from the left to right, home, model screens, configure screens, system screens and selectable 12 or 24 hour time. Touching these icons selects the appropriate screen. The left navigation control ring can also select the screens. Top = model screen and left = system screen.

ETHOS Model Screens

First Screen

Edit Model

A lot on this screen including edits for model name, model picture, model type, trim mode, tail type, channel quantities for for fight controls, etc. Also can can edit channel info in mixer.

Flight Modes

Program flight modes here. Once programed the flight mode selection are displayed in the mixers. Up to 100 flight modes can be programmed. Like most functions in ETHOS the user can program descriptive text Flight Mode names, e.g, Normal, Take Off, Landing.

Mixer

Control functions. One mix line for each control/mix and a graphic display for each mix . Touch mix line for popup that includes options to edit that expands as a screen for detailed configuration. The most common mixes can be added to the mixer by user including free mixes that are user configurable. The mixer includes contextual help text that dynamically changes as mixer options are touched. Up to 100 mixes supported.

Outputs

Channels displayed as bar graphs. Touch graph area and it opens as a screen for detailed configuration.

RF System

All the internal 2.4 and 900m controls and failsafe settings. External module controls and failsafe settings.

Telemetry

Discover and edit sensors options including data logging. When the sensors are discovered they have individual description for 2.4 or 900m so the sensor values can be used throughout the system. Up to 100 sensors supported.

Check List

Settings for throttle, post, sliders, switch position and failsafe check on system startup or model change.

Timers

Configure timer controls.

Second Screen

Logic Switches

Configure Logic Switches. Up to 100 Logic Switches supported. Every logic switch function you would be accustom to using plus more.

Special Functions

Configure Special Functions to play values, play sounds, etc. Up to 100 Special Functions supported.

Curves

Create curves to be used in mixer, etc.

Trainer

Turn on and configure trainer function,

ETHOS System Screens

Model Select

Select existing model, Copy Model, Import/Export, Delete or Create New Model. Model creation automatically builds mixer and outputs.

File Manager

File manager for managing files and access to flash firmware to the TD-ISRM, external S.Port, OTA and external modules.

Alerts

Settings for system alerts for inactivity timer, RTC battery check, and system start up alerts, etc.

Date and Time

Set 12 or 24 hour time, date and time.

Display

Display controls for brightness, wake up, sleep time, LCD during sleep, style dark or light with yellow or orange and language. Set pot for control.

Sound & Vibr

Sound and vibration control and set pot for volume control.

Battery

Main battery voltage, low voltage alarm, battery graph settings and RTC voltage.

Hardware

Select graphical screen to test all inputs, select analog calibration, gyro calibration and and set switch types.

Second Screen

Sticks Mode

Set the sticks mode and channel order. Once order set the next model created uses the settings.

Wireless

Set wireless mode.

Info

Displays system firmware version, gimbal type, internal module firmware version, ACCESS receiver firmware and external module information.

ETHOS Screens Config

There are seven different screen configurations for each new screen with up to nine cells for displaying widgets. Currently Input values for the widgets can be Logic Switches, Timers, Telemetry and flight modes. The cells can have images or values.

Creating Model

If this is the first model to be created set the channel order desired in SYS/Sticks Mode. See creating model screens below.

1. From the main screen touch the gear on lower bar to sect the system screen and at the system screen touch model selection icon.

2. At the model selection screen touch the large + (plus) to create new model.

3. At the model type screen touch the model to be created.

4. At the Engine screen touch and select the number of engine channels wanted and touch right arrow when complete.

5. At the Wing screen touch and select the number of ailerons and flaps if wanted and touch right arrow when complete..

6. At the Tail screen touch and select the tail type and the number of elevators wanted and touch right arrow when complete.

7. At the name and picture screen enter the model name and select model image. Touch the name and using the scroll wheel scroll to the text letter, number or symbol wanted and press enter for the next text letter. The the left nav controls are use to navigate entering. SYS and TELE moves curser left and right. MDL changes case. When complete touch right arrow and new model main screen displays.

Mixer

See Mixer screens below.

1. From the model screen touch the Mixer icon.

2. Mixer screen displays with the settings created above.

3. The mixer graph can be displayed for each mix by touching a mixer line lightly.

4. Touching mixer line longer gives popup. It provides the edit function, add a mix, decrease or increase priority position of the mix in the mixer, clone or delete. In this image I've already set rates and expo and you can see the expo curve in the graph.

5. Select edit and edit screen displays for mix.

a. The top of the screen and the name Aileron but can be edited.
b, An input can be used to turn mix on and off
c. In this example I'm using three rates on switch B. Switch up = 60%, switch mid 80% and switch down 100%. More rates can be added or
removed with + or -. 100 rates are supported.
d. Curves can be added to the mix but in this case I'm using the built in Expo set at 30%
e. Differential can be set positive or negative or an input used to adjust percentage. The input can be an analog, channel, etc.
f. Channel graphs and channel selection. Note the dynamic help text for CH2. Channels can be edited.
g. If flight modes were programed they would be displayed for selection in the mixer.

Delay functions for the Mixer are in the Logic Switches because they are related to switches. Here is and example of how to have a delayed switch for the mixer https://www.rcgroups.com/forums/show...postcount=2449

Outputs

See Output screens below. Even though the X20 has a higher resolution screen than the Horus systems most of the screen layouts are similar, however with the outputs on the Horus there is only one column of outputs compared to having two with the X20.

1. From the model screen touch the Outputs icon.

2. Outputs screen shows a bar graphs for each channel. On this screen you can see I'm using my throttle channel inverted. Note: a long press of the enter key from the mixer screen and flight mode will jump to the Outputs.

3. Touch the Output channel to be edited or reviewed.

4. Output screen.

a. The name can be edited.
b. Invert channel control.
c. Channel min and max.
d. Center and subtrim settings.
e. Add curve for individual channel.
f. Slow up and down settings.
g. Delay is programed through the Logic Switches that give better control

Add A Predefined Mix

See predefined Mix screens below.

To make ETHOS easy to use there are predefined mixes than can be added to the mixer. There is also a free mix that allows users to create custom mixes.

1. from the mixer screen select any mixer line and touch to access the popup menu.

2. On the popup touch "Add Mix".

3. The "Function Lib" screen is displayed. From this screen you can add more control channels to the mixer, the predefined mixes, the free mix and a test mix. It is missing the "Flap to Elevator" mix but will be add soon along with other mixes requested. For this example we will use the "Ail To Rud" mix. Touch the mix.

4. The Mixer screen is displayed with a popup to select where you want the mix in the Mixer. The mixer positions can be easily moved later but for now we what it after the rudder. Touch Rudder.

5. The Mixer screen is displayed with the "Ail To Rud" mix added after the Rudder mix. The mix has some predefined settings that can be edited.

6. Touch the "Ail To Rud" mix and enter the edit mode.

7. The edit screen displays.

a. The name can be edited.
b. The mix is set for "Always On" but it can be changed to be controlled by Switch Positions, Function Switches, Logic Switches, or Trim Positions.
c. A curve can be added.
d. The Rudder channel that can be edited.
e. Graph.
f. The mixer weight that can be edited.

8. Outputs screen showing the rudder mixing with the ailerons.

Add A Free Mix

See add a free Mix screens below.

In this example I'm adding a free mix to the mixer that lets the user configure all the mixer functions.

1. The Mixer screen with the "Free Mix" added to the last line of the Mixer.

2. Edit mode in the "Free Mix".

a. The name can be edited.
b, Active Switch can be Always On, Switch Positions, Function Switches, Logic Switches or Trim Positions.
c. The Source can be Analogs, Logic Switches, Trims, Channels, Timers, Telemetry, Gyro. Trainer or Special. Unused Channels can be used for input if wanted. Special provides the option of having a Minimum, 0 or Maximum input. In this example I'm using switch SF. Autodetect us used
throughout the system including analogs.
d. Function Types are Addition, Multiply or Replace.
e. Output can any of 32 channels. Using CH 6 for this example.
f. Graph.
g. Reverse setting.
h. Add a curve if wanted.
i. Offset setting
j. Weight up and down.
k. Speed up and down

3. Outputs showing channel 6 working.

Logic Switch and Special Function

See logic switch and special function screens below.

In this example I'm going to program a Logic Switch to monitor the receiver battery voltage and play a warning wav file if voltage drops below the set point in the Logic Switch.

Logic Switch Programming

I already have one 2.4 and one 900m receiver registered and bound to the system internal TD-ISRM as ACCESS receiver 1 and 2. The TD-ISRM can have three 2.4 ACCESS receivers or three 900m ACCESS receivers or a combination for a total of three. I've discovered sensors and because I'm using a combination there are a set of 2.4 sensors and a set of 900m sensors that are labeled as 2.4 or 900m. Both 2.4 and 900m sensors report telemetry values real-time

1. From the Model Screen 2 touch Logic Switch.
2. This is the first the first Logic Switch programed so touch the + (plus) .
3. Depending function selected the screen parameters will change.
4. To monitor the battery voltage I'm use the following settings .

a. Normal "A<X" = The RX battery is bellow 6.1v
b. The Source is RxBatt.2G4. (think that 2G4 is a typo, Should be 24G and I'll get it fixed ASAP. Edit: fixed)
c. The Value is 6.1v for my receiver low voltage limit.
d. For the battery monitor I don't need a Start Switch.
e. For the battery monitor I don't need Delay before active but good for motor voltage where you want to delay the LS becoming true.
f. For the battery monitor I don't need Delay before inactive.
g. For the battery monitor I don't need Min duration
h. The color of LSW1 changes to green when logic is true

5 Exit to the main Logic Switch screen. The text changes to bold when true.

Special Function Programming

1. From the Model Screen 2 touch Special Function.
2. There is already one Special Function so we touch it for the popup and touch ADD.
3. For this Special Function I made the following settings.

a. The Acton is Play Track
b. The State Enable
c. Switch is LSW1
d. The file is my RxBat wav file.
e. I want the message to repeat every 5 seconds.
f. I don't need Skip on startup but it is very nice to have so things like Low Rate, Gear Down, etc. do not play on system startup

4. Exit back to main Special Function

Logic Switch Functions

the following logic functions are supported.

A=X, A~X, A>X, A<X, IAI>X. IAI<X, ▲>X, I▲I>X, RANGE, AND, OR, XOR, TIMER, STICKY, EDGE.
(A=B, A>B, A<B functions are being integrated with other functions)

Curves

See curves screens below.

1. From the Model Screen 2 touch Curves icon
2. If this is the first curve to be created touch the + (plus)
3. Curve edit screen displays

a. Name can be edited
b. Select curve type from Exponent, Function or Custom
c. Points Count selects the number of points
d. Smooth, smooths the curve
e. Easy Mode controls Y only or X - Y.
f. Points Config for editing the curve.
g. Once complete curve is displayed in main Curves screen and available throughout the system.

TD-ISRM RF

See the TD-ISRM RF screens below.

The X20 TD-ISRM internal RF module is a new design that provides tandem 2.4g and 900m RF paths.

ACCESS Mode

In ACCESS mode the 2.4g and 900m RF paths work in tandem with one set of ACCESS controls. There can be three 2.4 receivers registered and bound or three 900m receivers registered and bound or a combination of 2.4g and 900m for a total of three receivers.

In ACCESS mode with a combination of 2.4g and 900m receivers the telemetry for the 2.4g and 900m RF links are active at the same time. The sensors are identified in telemetry as 2.4g or 900m.

There is a new ETHOS telemetry receiver source feature named RX. RX provides the receiver number of the active receiver sending telemetry. RX is available in telemetry like any other sensor for real time display, Logic Switches, Special Functions and data logging.

ACCST D16 Mode

In ACCST D16 the TD-ISRM becomes a single 2.4g RF path.

TD Mode

In TD Mode the TD-ISRM is in a low latency long range mode using the 2.4g and 900m RF links in Tandem to work with the new Tandem receivers. Tandem receivers are not available yet.

1. To access the RF system controls touch the RF System icon on the Model screen 1 and the RF system screen displays. Note the RF icons on the top bar of the screen.

a. The Owner Registration can be eddied.
b. Internal module display or collapse view.
c. State of module, OFF or ON. New model creation sets the RF module OFF by default.
d. Type, modes ACCESS, ACCST D15 or TD Mode.
e. 2.4g RF link OFF or ON
f. 2.4g Antenna. Inside selects the two time share antennas and external selects the single external on the top left of the system.
g. 900m RF link OFF or ON
h. 900m Antenna. Inside selects single antenna and external selects the singe external on the top right of the system.
i. Power setting for the900m RF link
j. Model ID for the current model. This number should be set to a different number for each model.
k. Set for registering receivers and range check. The range check popup displays both the RSSI for the 2.4g and 900m. Edit: Will also include VFR and RX number.
l. The ACCESS controls are the normal ACCESS controls. In this example RX1 is a 2.4g R8PRO and RX2 is a R9Slim Plus.
m. Failsafe is the normal fail safe settings including the custom setting.
n. External module settings.

Telemetry

In this example I’ve registered and bound an Archer R8 Pro (UID 0 and RX1), an Archer R10 Pro (UID 1 and RX2) and a R9 Slim Plus (UID 2 and RX3). The R8 Pro has a S.Port connected Vario and GPS. Next is discovering the sensors.

The Telemetry screen is selected by touching the Telemetry screen from the first Model screen.

When first entering the Telemetry screen there are no sensors displayed. With all three receivers powered on and the RF links active the “Discover new sensors” is turned ON. The sensors are discovered and displayed. Turn discovery OFF.

When there is a mix of 2.4 and 900m receivers their individual sensors are displayed with 24G or 900m identifier.

Sensor Screen One

1. RSSI .24G showing 100db.
2. RX .24G 0. The RX sensor is a real time display of the 2.4g telemetry source. Thus all the 2.4g sensor data is being sent for UID 0 or RX1. The RX value is available just like any other sensor for Logic Switches, Special functions, Display Screens and Data Logging.
3. RSSI .900 showing 81db
4. RX .900 2 The RX sensor showing that 900m sensor source is UID 2 or RX3.
5. RXBatt .24G showing voltage at 6.50 volts

Sensor Screen Two

1. GPS Speed .24G
2. ADC2 .24 0.0 volts.
3. Altitude .24G 0.0m from Vario.
4. RxBatt .900 6.40 volts
5. VSpeed .24 0.00m/s from Vario
6. VFR .900 Valid Frames Received from RX3
7. VFR .24g Valid Frames Received from RX1.
8. GPS Lat .24G From RX1. (Some of the GPS info in the image has been edited out)

Sensor Screen Three (two at bottom)

1. GPS Lon .24G From RX1 (Some of the GPS info in the image has been edited out)
2. GPS Alt .24G From RX1

Sensor Edit RSSI

1. Highlight sensor and long touch.
2. Popup with Edit or Delete.
3. Touch Edit
4. Edit screen displays.

Sensor Edit RSSI - First Screen

1. Value is the real time RSSI value
2. ID is the sensor ID
3. Sensor Name
4. Unit of measurement is db
5. Decimals one
6. Write logs ON
7. Critical value for low RSSI warning 32

Sensor Edit RSSI - Second Screen

1. Low value warning for RSSI 35.

Sensor Edit and Configuration

Here are some sensor edit and configuration examples.

Xact Servo F.Port 2.0

1. From the Telemetry screen click on Xact servo to be edited.
2. From popup select edit.
3. Edit screen displays.
4. From Telemetry screen click on Xact servo to be configured for popup. Select configure.
5. Configure screen displays.

GPS Sensor Configuration

1. From Telemetry screen click on GPS sensor to be configured for popup. Select configure.
2. Configure screen displays.

Global Variables (GVRs)

The ETHOS GVRs can be used as input control to the following:

1. Ailerons differential
2. Curves expo
3. MultiCombiMix output weight in (like Elevator to Camber, Airbrake)
4. Logic Switch Value (X)
5. Input to Free Mix.

More inputs will be added if users have a need for them

How to add a mix to mixer https://www.rcgroups.com/forums/show...postcount=3032

I've built a GVR example that changes the aileron differential amount depending on the fight mode. See screen images below.

1. Created three fight modes. (can have 100)
2. Added GVR mix to the mixer (mixer can have 200 mixes)
3. In the GVR mix assigned three flight modes and a weight percentage to each one, 20, 30, 40. (need to find out how many can be used, but a lot)
4. Set the output to channel 33. Any unused channels from 1 to 32 can be used and then 33 through 64 (32) are dedicated to GVR variables.
5. In the aileron mix I added CH33 Var to differential.

As fight modes are changed the aileron differential dynamically changes 20%, 30% and 40%.

The GVR mix can use inputs from Flight Modes, Switch Positions, 6-pos switch (Horus), Function Switches, Logic Switches, and Trim Positions.

Not sure how to calculate the total number of variables because it would be 32 plus any used below 33, times the number of variables used in the variable mix.

Gear Door Sequencer Configuration

Gear door sequencer configuration https://www.rcgroups.com/forums/show...postcount=3621

Screens and Features

02/19/21

Some of screens and features have been improved since being posted here and will be available to the beta testers in the next ETHOS release.

To be continued…
Last edited by Jet_Flyer; Jun 04, 2021 at 10:05 AM.
Sep 07, 2020, 08:25 PM
Fly Eat Sleep Repeat
Andy852's Avatar
Any photos of the back of the radio?
Sep 07, 2020, 08:53 PM
Registered User
Jet_Flyer's Avatar
Thread OP
Quote:
Originally Posted by Andy852
Any photos of the back of the radio?
Posted.

Mike
Sep 07, 2020, 09:51 PM
Let's fly !
DaySpeed's Avatar
Very nice.
I guess that the display has the same resolution has the Horus series?
OpenTX supported?

Is Ethos similar to FrOS or very different?

Thanks so much!
Sep 07, 2020, 10:11 PM
Fly Eat Sleep Repeat
Andy852's Avatar
Quote:
Originally Posted by Jet_Flyer
Posted.

Mike
Thanks Mike, looks interesting indeed.
Sep 08, 2020, 12:44 AM
Registered User

Are stick switches possible?


Hy,

what about possibility of 2 stick switches
are there 1-2 free sockets inside
gimbal with 4mm and hole for the cables

internal charger unit got to hot?
Charging current 0,5A, 1A, 2A with 2,1A external USB Power unit?

1S or 2S with 18650 or 21700?
Last edited by helle; Sep 08, 2020 at 01:26 AM.
Sep 08, 2020, 01:28 AM
Registered User
taurineman's Avatar
Will OTX get a port?

Sent from my Pixel 4 XL using Tapatalk
Sep 08, 2020, 02:29 AM
FJH
FJH
Registered User

Internal antenna installation


The two 2.4 GHz antennas are supposedly installed in the frame around the display, a photo of its installation would be appreciated. This antenna installation is a critical matter which controls the signal distribution. And an excellent signal distribution is number one feature (for me at least) of an Tx while everything else comes second. Jeti has successfully demonstrated with its DS-16 how to achieve this, it has installed four antennas in the frame around its display. Jeti however also has given an excellent example with its latest DS-12 how disadvantageous a saving-money-installation is with only two antennas in the display frame. The result of this low cost installation is an existant and noticeable weaker transmission signal on the right side/direction of the transmitter. The criticality of antenna installation for a Tx with display on its top was brought and explained to FrSky at an early development stage to avoid a disadvantageous installation. Will become quite interesting how the X20 antenna installation proves itself for a good signal distribution not only in front direction of the Tx but also to the left and right side of Tx. There are many pilots who do not turn around during flight to always point the Tx front side towards the model. Also these pilots do not want to be repeatedly bothered by weak signal alarms. So let's see what future will tell us.
Last edited by FJH; Sep 08, 2020 at 02:48 AM.
Sep 08, 2020, 02:34 AM
does anyone like the switches or think it's the best shape ?
the upper back switch appears to be unreachable unless you have a XXL size hand.
Sep 08, 2020, 02:47 AM
Registered User
Thoemse's Avatar
I want this so bad!
I like my X12S but it is a pretty heavy piece of hardware and I'd trade the sliders in the middle for side sliders any day.

The only unknown to me is ETHOS. I am an OpenTx fan. Lets hope OpenTx will be available too or ETHOS is even better.
Sep 08, 2020, 03:07 AM
Registered Slopeaphile
awmeade's Avatar
Very nice, watching closely. Thanks for the post.
Sep 08, 2020, 03:14 AM
Registered User
The handle is now made of plastic instead of metal, and is quite chunky – is it possible that the 900mhz antenna is hiding in there?
Sep 08, 2020, 03:19 AM
Registered User
Quote:
Originally Posted by coreless
does anyone like the switches or think it's the best shape ?
the upper back switch appears to be unreachable unless you have a XXL size hand.
Does anyone like anything on a forum? First thing most people do is rip into a product and then tell everyone else what they think is best or how it should have been done, lol.


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