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Posted by scott page | Apr 11, 2016 @ 12:42 PM | 3,151 Views
This thread will be a document that will be a work in progress in which I will list changes I find between OpenTX 2.0 and OpenTX 2.1 .

Rather than just a change log I'll be highlighting the changes using screen shots. Comments are welcome, but will be deleted after being read and noted.

That being said -- time to get started.

The first thing that is notable with 2.1 is the new splash screen. This is notable because you can run both OpenTX Companion 2.0 and OpenTX Companion 2.1 on the computer at the same time. The very different splash screen gives assurance that you are opening the correct version if you choose to have both available.
Posted by scott page | Apr 02, 2016 @ 11:01 PM | 2,325 Views
EDIT: For an updated method look to post #9 below

This is how I have my Taranis+ with OpenTX 2.1.7 call out my battery consumption.

I know it can be set up more efficiently - and I may change to more efficient programming in the future.
Posted by scott page | Nov 19, 2014 @ 12:35 PM | 7,770 Views
Attached is a .pdf document to clarify much of the confusion regarding EEPROM storage, FIRMWARE storage, and SD card files.

Document updated 11/21 to include information about file name for languages other then English and maximum file length for firmware names in the firmwares directory.
Posted by scott page | Oct 11, 2014 @ 07:58 PM | 8,827 Views
Occasionally the LCD on Taranis get out of place, either in shipping or in use. I'll add more text to this later - but here is an image sequence I made for a Facebook user having issues.

First, and example of a Taranis that has had the LCD display slide upward.

...Continue Reading
Posted by scott page | Oct 09, 2014 @ 08:26 PM | 7,511 Views
I've started a new video series as my previous videos are getting dated as things have changed so fast in the last year.

The series will be about all things having to do with OpenTX 2.0 and beyond. I'll be starting with a Taranis, but may branch out to other Transmitters running OpenTX in future episodes.

Well - here is episode 1
OpenTX 2.0 and Beyond Episode 1 (8 min 54 sec)

Posted by scott page | Oct 02, 2014 @ 08:53 AM | 7,860 Views
I just purchased two new Glacier 3300 mah 4 cell batteries from Buddy RC.
They had the 3300 4 cell available in both 30C and 45 C configurations, so I bought one of each to compare and see if there was really any difference. Upon their arrival I had to change plugs, but did not run them or do any other changes. The 30C arrived with a deans Plug and the 45C with an EC5 plug. I changed them both to XT60 which is my plug of choice.

I then used the Hi-Res ESR meter available from ProgressiveRC to check the internal resistance of all cells. The results are below in chart and graph form.
In addition to having generally higher resistance the 30C battery had a difference of .19m Ω and the 45C battery had a difference of .12m Ω between the highest and lowest internal resistance. Minimal difference in internal resistance is important so that the cells accept and deliver current at the same rate.

How does this compare with other brands? Not the intent of this test. My test was simply to see if the 45C battery was indeed different from the 30C battery.

Some would be quick to point out that this is a minimal sample size. If anybody would like to bank roll a larger test I'd be glad to use more samples .
Posted by scott page | Aug 04, 2014 @ 12:26 AM | 8,942 Views
Today I received the following question:
Hi Scott, been messing with my Taranis and would firstly like to thankyou for your videos on youtube that have been invaluable in helping me get my head round this great radio.
I have just set up some custom functions to play tracks for my high rate switches etc and have everything pretty much how i want it for my latest model however, is there a way to stop it playing the tracks for each switch when you first switch the taranis on, as at the min, when i switch it on it plays my welcome track followed by all the tracks i have set up for each switch "rudder low, aileron low, instructors plane" etc..
Many thanks in advance name redacted
Yes there is. I'm going to answer your question in the blog so I can include screen shots for assistance.
First you need to have OpenTX 2.0 installed. 2.0 has many new features - so many that there will likely be many you won't need - but they'll be useful for somebody else. I'm a HUGE fan of the changes to 2.0 and the upgrade process is well worth the effort. I DO need to get some new videos done that cover some of the differences -but superficially some tab/screen names are different - but the basic function is the same.

Now on the switches playing on startup. Turns out to be an easy thing to remedy. What you want to do is choose "Play once not on startup". So every time that condition is met it will play the sound once - but not if it's during startup that the condition is met.

Look to the images below to see how this looks.
Posted by scott page | Aug 01, 2014 @ 03:47 PM | 8,321 Views
If you're interested in Taranis Apparel see The T will fit up to 5X.

Many months ago I secured permission from FrSky to have a shirt dealer I know use the FrSky Logo to create embroidered shirts. This became a chicken and egg thing because the shirt dealer was not willing to create the shirt without guaranteed orders. Ultimately I've given up on this dealer. I purchased products using this design from several different online vendors and worn them for about 6 months.

Basically, this was the best solution I found that requires no money up front as embroidery or silk screening does and does not have a minimum mark-up.

This is not a "for profit" venture. My intent is to make Taranis Apparel available so people know who the cool kids are. Also be aware that Aloft has some sweet bling shirts as well. My wife and I wear our Taranis or Aloft shirts to all events and meetings (we're in two clubs).
Posted by scott page | Jul 07, 2014 @ 01:51 AM | 9,810 Views
I received a private message today I'd like to share here and answer publically so the answer may benefit all.

Hi, I have just received my Taranis in the post! And I was looking at adding my own model images, however when I plug it in window vista installs the drivers for a game controller and now I cannot load up my own and your model images? Any help would be appreciated. Thanks
name redacted

There are a few requirements for model icons and also a few for splash screens.

Model icons must be
  • exactly 64 px wide and 32 px tall
  • saved as .bmp files with 4 bit
  • placed in the SDcard/BMP folder
  • have 10 characters or less with no spaces and a .bmp suffix (Note: sounds must be 8 characters or less with no spaces and a .wav suffix)

The problem most people have is getting them saved as 4 bit images. 4 bits gives you 16 shades of gray - theoretically. The quality of the Taranis shades 12-16 are basically transparent. shates 1-4 are basically saturated - leaving realistically 9 different shades.
To edit icons, I work with them in their native resolution and start by converting the image to grey scale to purge any colors. Programs such as Photoshop allow you do use commands such as "Black & White" rather than doing a direct desaturation so you can darken or lighten certain hues so they stand out from one another.
I don't want a grey rectangle background; that looks cheesy - so the first thing I do is to remove all of the background of the icon....Continue Reading
Posted by scott page | Jun 07, 2014 @ 09:55 AM | 12,677 Views
On this post I started a Tribute to those who stand out in their support of the FrSky Taranis and OpenTx community. I don't want the Wall of Fame limited to just that thread - and I'd like to have a place for nominations - so I'm making a copy in this blog post.

This post is my tribute to those who stand out in a variety of ways and stand the test of time in the OpenTX community.

First Category: Natural Helpers (helping other users with OpenTX and standing the test of time).
  1. Skill,
  2. Patience
  3. Longevity
  • pmackenzie (inducted June 3, 2014)
  • Kilrah (inducted June 3, 2014)
  • punkindrublik (inducted June 5, 2014)
  • showmaster (inducted June 5, 2014)

Second Category: Firmware and Software Developers.
  • erazz (inducted June 3, 2014)
  • Mike Blandford (inducted June 3, 2014)
  • bertrand35 (inducted June 3, 2014)
  • Kilrah (inducted June 3, 2014)
  • dvogonen (inducted June 3, 2014)
  • spectrum66 (inducted June 3, 2014)
  • dinamich (inducted July 14, 2014)
  • Fig Newton (inducted June 29, 2014) LUA thread and development
  • nigelsheffield (inducted July 23, 2014) LUA Development

Third Category: Training and other Material Developers.
...Continue Reading
Posted by scott page | Jun 04, 2014 @ 01:46 AM | 10,237 Views
Simple question:
Does the play button work for you in CompanionTX using Windows?
Posted by scott page | May 15, 2014 @ 09:49 PM | 17,991 Views
This is my understanding of the "buddy box" functions of the Taranis. There are enough different parameters to play with that I'm not sure of all the possibilities, so I'll explain what works for me, and then in the future add more information as it's learned and tested.

I find the term "Buddy Box" somewhat misleading. In truth what we're doing is establishing connection for a CoPilot connection.

To access the default trainer screen give a long press to the MENU button and then press PAGE twice.

The CoPilot connection can be established with many different parameters, and different transmitters. If a transmitter can output PPM signal it can be used for a CoPilot connection.

In the best possible scenario both transmitters will be Taranis, but that's not necessarily going to be the case. Fortunately the Taranis can be either the primary or secondary transmitter. The primary transmitter is also referred to as the "master" or the "instructor" transmitter. The secondary transmitter is also referred to as the "slave" or the "student" transmitter.
There are three different primary-secondary possibilities.
With the Taranis
  • as the primary transmitter,
  • as the secondary transmitter,
  • both the primary or secondary transmitter.

As an additional parameter, the connection can be either wired or wireless.

Regardless of whether the connection is wired or wireless, the transmitter that...Continue Reading
Posted by scott page | Apr 02, 2014 @ 10:18 AM | 25,938 Views
Edit April 2016: In the time since I've written this post some improvements have been made to OpenTX. See this post for updated information

EDIT: This is the basic sequence you'll do
  • modify S.port cable as per instructions and connect S.port cable to FRUSB cable
  • open Device manager so I can see what port is added when I plug in the FRUSB cable
  • Plug in FRUSB cable to TX and USB as per instructions.
  • Set to port that comes up with USB to UART (FRUSB) (Port 3 in this case)
  • Run frsky_update_Sport.exe as admininstrator
  • Click File - load XJT_131105.frk
  • Turn on Transmitter
  • Press download
  • Wait until finished
  • Press End

Unzip the attachment.

[I actually bought two of the smartport converter cable, one for the XJT and one for the other smartport devices]

Modify the smartport cable by removing the red wire and moving the black(or brown) wire to the center spot in the plug as shown in illustration. And follow instructions for connecting cable to TX inside the module bay.

You'll run frsky_update_Sport.ext from the zip file and chooose the XJT.frk file to upload to the transmitter.

...Continue Reading
Posted by scott page | Dec 04, 2013 @ 11:22 AM | 15,669 Views
I'm somewhat intrigued with the age of those who are purchasing the Taranis. A couple people have told me that their age was a factor in choosing whether or not to purchase the radio. I've also been told that RCG is only used by younger modelers - and while that may be somewhat true, I'm not sure if I believe that either. So... I thought I'd conduct a poll.
Posted by scott page | Nov 24, 2013 @ 10:34 AM | 49,538 Views
Since about April 2013 I've been making videos to help people master the amazing FrSky Taranis transmitter with OpenTx firmware.
My new friend, Jeffrey Gittelman, (Tbolt65) has begun creating Table of Contents for those videos - so I'm going to use this thread to post that information. I'll invite Tbolt65 to post in this thread; however replies to this thread will be deleted - but your are invited to PM me with questions or comments.

To subscribe to this thread without posting - so you get notifications when there is a new video posted see the attachment below. NOTE: You must be logged in for the subscribe to this thread option to show.

As of Jan 15, 2014 this was the summary of the video index.

“Open TX For Beginners – Sticks & Mixer” (Nov 21, 2013)
“FrSKY Taranis Transmitter Set Up 6 Channel Model with Extras” (Nov 14, 2013)
“FrSKY Taranis – Rates, Mixes and a little bit of pixel dust” (Oct 10, 2013)
“Smart Port Sensors: LiPo-Current-Voltage-Vario” (Nov 20, 2013)
“Custom Functions – Some Meat and Potatoes” (Oct 7, 2013)
“What to do first when you get your FrSKY Taranis – a little bit of this and a little bit of that” (Jul 2, 2013)
“Programming Taranis with C9X for Simple Mix, Rates, and Expo” (Oct 4, 2013)
“FrSky Taranis Preferences” (Apr 6, 2013)
“EEPROM - Model settings and...Continue Reading
Posted by scott page | May 08, 2013 @ 06:24 PM | 19,833 Views
I've seen lots of trays. Over the past few years I've taken pictures of every tray I saw and compiled a collection of what I likes, and didn't like so much. My wife bought me a wonderful tray that requires a harness to wear properly. It was expensive and effective, but the harness left alot to be desired and the tray had some features that bothered me a bit. One thing is I want my hands to rest in one place so that they are anchored to datum (as in surveying). Secondly I wanted to be able to reach all of the switches easily. I wanted the transmitter to hang level from the strap - and I wanted a strap - not a harness. It needed to be somewhat compact but also protect the transmitter. I don't know if I succeeded at making the perfect (for me) tray or not yet, but for now it seems to be working pretty good.
Its laser cut from OPTIX 18" z 24" .220 in. Acrylic Sheet. The spring on the bottom was made from LEXAN Polycarbonate Sheet that is .093 inches thick. Plastic materials were purchased from Home Depot. The T-nuts and hex cap screws are 3mm. Lexan bends very easily when heated with a heat gun - but easy not to get it too hot too fast or it will bubble and ruin your surface. Acrylic is even easier to bend because it is not so likely to bubble, but will if heated too fast.

I've included several photos of the final product and an zip file with two illustrator files for cutting.
Posted by scott page | Mar 31, 2013 @ 01:03 AM | 15,051 Views
Lightening holes in foam is nothing new. The problem is that rigidity and construction integrity is compromised in the process. My goal is to try to eliminate much of the foam in the wings of a "flying W" without sacrificing strength or rigidity.

The Flying W is basically a design similitude of the Robbe Gemini - which was reverse engineered and plans posted on Watt flyer and RCG about 2007 or 2008 as the "Capricorn". The plane is actually an amazing plane and an absolute hoot to fly. The lower the wing loading the better they fly.

So as I'm learning to use a laser cutter I needed a more challenging project and so the Swiss W was born. In addition to the honeycomb pattern cut into the depron, used a 12mm CF tube back bone which extends from the motor mount to the root of the stab. This back bone will be the hard anchor point for the battery and ESC. The firewall is constructed from poly-carbonate that has been heat shaped so it has a 4 degree up thrust. I predict that as the thrust increases, the firewall will flex forward to reduce the amount of up thrust -- possibly helping to remedy one common problem with the W/Capricorn/Gemini -- and that is altitude gain on high throttle. Yes, you can mix in elevator -- but that increases parasitic drag -- a changing thrustline could be more efficient.
Below are the building photos so far.

I used Ultrakote, MonoKote, and New Stuff for different areas covering. New Stuff is much lighter -- shrinks less so is less of a problem deforming the panels. Next preference was ultrakote. MonoKote was really heavy, needed much more heat to start with, leaving less of a range for adjustment of warps and such.

To do it again I'd just use 100% new stuff from
Posted by scott page | Jan 21, 2013 @ 01:36 AM | 14,785 Views
In the upper left corner of the RCG menu there is a link to "My RCGroups".
See the attached image for the link below that which will cure chronic pains in the butt.