Put yourself on the FortiusANT map!

[WouterJD]

Of cources I'm curious what athletes actually use the software and a post is appreciated, perhaps with picture and/or reference to strava or else...
The list of FortiusANT users is growing:

My strava experiences can be found on: https://www.strava.com/athletes/2885978
Riding, using Trainer Road and Zwift interfacing to FortiusANT simultaneously:

[fritz-hh]

I plan to use it as soon as the tacx imagic is supported by FortiusANT.
And luckily that should be very soon :-)

Thanks again for all the energy you have put in this project!

[yegorvin]

Thank you @WouterJD and others for great work and the opportunity to give a second life to the old Tacx trainer.
It is very bad when the manufacturer does not support old devices in any way, stimulating excess debris on our planet.

Using FortiusANT the next winter season I will be able to train with more efficiency and interest.

My profile in Strava: https://www.strava.com/athletes/4806561

[RamonFigueras]

Thank you Wouter for your excel·lent Job and even a better support to have FortiusAnt up and running. I'm currently using it under Zwift and Rouvy.
Please extend my thanks to all contributors.
Ramon

[vincentb2709]

Hello.
Thank you for this initiative, it permits me to use old solution with Zwift ! I use Tacx Imagic 1904 with win10 and it works well.
However my Tacx is not detected when I launch FortiusANT.exe (prompt opens up and down immediatly with message "Tacx not found"). However, if I launch from command prompt FortiusAnt.py, it detects Tacx, open the status windows in prompt, works and Zwift recognize it.
Can you explain this behaviour ?
Thank you again for this amazing job!

[vincentb2709]

I'm from France! We cannot go out or cycle so I got an old Tacx and were frustrated of its program. Thank you for this information, I understand now

[oflahero]

I have an old Fortius, and run WIndows 7. I'll certainly be trying this when Aliexpress send me the two ANT+ dongles I ordered this evening! Country has just locked down so lots of indoors training for a while :)

[WouterJD]

Keep me informed, I'm curious what USBid those dongles will use

[E-NINA]

Hello, due to this situation about Corona I was also checking my old trainner. I just relaised that Tacx Trainner Software isn't supported anymore. I've try fortiusAnt and I get working parcially as I have some issues.
I'm from Portugal, Evora and I've a Fortius T1932.
I've 2 ANT dongles but I realised one is very old (GARMIN USB) and as only 4 channels so no detected as a ANT dongle by ExplorANT.exe (I don't know if this is soposly to be like that but left here for reference).
The other dongle works correct and is dected by ExplorANT.exe.
I'm able to go ahead as I've a tablet with ANT integrated.
So running fortiusant windows exe file I got the following:

• on ZWIFT detects HR but not the trainner.
• on ROUVY detects HR and also the trainer (but as soon I start pedal - fortiusant crashes)
  Runing PY files
• on ZWIFT detects HR but not the trainner.
• on ROUVY detects HR and also the trainer and app runs smothly.

Any hit why ZWIFT can't detect trainner?

[vincentb2709]

Keep me informed, I'm curious what USBid those dongles will use

I tested it this week and it works well with .exe on win10! Thank you!
The soft is just quite slow to start (20 seconds) but do the job!
Just one point, is it normal to not have possibility to have GUI?
Thanks again for your job and help that is saving my Mont Ventoux training! ;)

[WouterJD]

Buon jour, Vincent

The exe unzipped itself into a temp folder and then executes; try his causes a slower start. The python version has a quicker start

No GUI is the default, -g flag provides GUI. For more info check wiki.

Succes with your moUnt Ventoux training; when do you go?

Please meet on Strava: https://www.strava.com/athletes/2885978

[iepuzaur]

hi, I own a Tacx i-vortex (the non-smart one). Would this work with it? I might give it a try :)

[Smieszm]

Hi Wouter,
I have just found your software that hopefully will clean my I-Flow Multiplayer from dust. Greeting from Poland. :) It would be great at some point if the calibration for the I-Flow would be available as it is for the Fortius. :). I will check how (and if) it works with ZWIFT - I have two ANT+ dongles which seem to be recognized by the soft. Anyway amazing job!

[WouterJD]

It would be great at some point if the calibration for the I-Flow would be available as it is for the Fortius. :).

Please check #30 where @yegorvin has done the meassurements for iMagic, if you have a powermeter then you could do the tests for iFlow. As soon as you have your iFlow working and you start with calibration, start a new issue please.

[mattipee]

Just tried out FortiusANT on Windows this morning. I have a Fortius T1941 motor brake w/ blue T1932 head unit.

Looking forward to using it more and having a play with source. Good work!

[WouterJD]

Just tried out FortiusANT on Windows this morning. I have a Fortius T1941 motor brake w/ blue T1932 head unit.
Looking forward to using it more and having a play with source. Good work!

Great and welcome in the FortiusANT community; show the results on strava: https://www.strava.com/athletes/4806561

[iainhay]

@WouterJD my Strava link is
https://www.strava.com/athletes/iainhay and I'm based in London not Cambridge FYI

[WouterJD]

@WouterJD my Strava link is
https://www.strava.com/athletes/iainhay and I'm based in London not Cambridge FYI

Thanks for adjusting; the list of users is longer than I can maintain and even know of; shortly I may limit to the first two people in a country or so - and then add a pin on each country on the map :-)

Funny; I looked for your name and the Cambridge-athlete is a (reasonable, quick) look alike based upon the foto. This is better though!

[brianrow]

Hi, this is a great facility for us who don't have or can't get smart trainers. (Cost!) Thank you for you efforts. I've connected my Fortius (0x1932) and can see output data for all parameters, however in 'Run mode' the Target stays fixed at 100W. I'm using GoldenCheetah (GC) as the trainer app, and it seems that either GC is not sending data to Fortius, or Fortius is not accepting. Even if I use manual ERG mode and increase or decrease load, there is no change on the trainer.

1. Where does the Target come from?
2. Does FortiAnt send info back to the trainer?

Thanks again for this utility.

B.

[rick8245]

Hi Wouter,

I just tried your software and it works fine.
On my Tacx Software version 4.x i now get the error : connection to the brake system lost.
That happens quite often now.

Just to test if the brake system still works fine I used your software and it ran fine.
The only thing what I noticed is that :
on the TTS4 software i need 180 WATT to reach a 30 km p/hour average
On your software i ride 210 WATT with only 27 km p/hour
Als when i ride 240 Watt it still says i ride about 27 km per hour

Can you explain the huge difference ?

Thanks in advance and thanks to your software I now know the rake system is not broken but still works

Rick8245

[szczurem]

Speed is mostly irrelevant for an indoor trainer, unless you use a virtual racing software. For a simple trainer, power, HR and cadence is all that matters.

Once you start competing with others or do a time trial on a virtual course speed starts to matter of course. Then you need to take into account your weight, grade, model your riding position, wind and drafting. It is done in Rouvy, Zwift, etc, where you enter some crucial parameters (rider and bike weight in particular).

I suspect Tacx Software was modelling this a bit differently or your parameters are different, but power calibration would be the only thing I would worry about if you only use fortiusAnt and not the VR software.
Mateusz

[orrmany]

Hi Rick8245, be aware that the power (watt) does not have constant mapping to the wheel speed, but rather is a product of the wheel rotational force (Torque, in Newton-meters); and the wheel angular speed (expressed in radians/second, that is, 2π/60*rotation_per_minute ). That is: you can have 180W with 25Nm wheel torque and ca. 69rpm wheel rotation, and you can have 180W with 50Nm wheel torque and ca. 34 rpm wheel rotation....The former case shows you twice as big "speed" than the latter.... You can have 180W, 210W and 240W and have the same "speed" if the braking resistance of the trainer (which determines the necessary torque to apply) is changed accordingly. rick8245 ***@***.***> ezt írta (időpont: 2024. nov. 26., K, 15:08):

…

Hi Wouter, I just tried your software and it works fine. On my Tacx Software version 4.x i now get the error : connection to the brake system lost. That happens quite often now. Just to test if the brake system still works fine I used your software and it ran fine. The only thing what I noticed is that : on the TTS4 software i need 180 WATT to reach a 30 km p/hour average On your software i ride 210 WATT with only 27 km p/hour Als when i ride 240 Watt it still says i ride about 27 km per hour Can you explain the huge difference ? Thanks in advance and thanks to your software I now know the rake system is not broken but still works Rick8245 — Reply to this email directly, view it on GitHub <#14 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AD3DSNAWFIUBCQDFPTFCAID2CR6G3AVCNFSM6AAAAABSQQ66NOVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDKMBQHA4TQNRYGE> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[rick8245]

@orrmany and @szczurem
Thanks for your reply .
I ride a flat course here with 0.0% slope.
I would expect that 210 WATT would be more than 30 km per hour.

According to other tools like Zwift etc I will try to find the different parameters and how they work

[WouterJD]

In addition to @orrmany and @szczurem

FortiusAnt shows the speed and the power (as provided by the tacx trainer) using various algorithms which have been empirically established as described in the manual and available in the source code.

CTP's like Zwift and Rouvy use the power to calculate the speed.

A CTP sends a desired power to FortiusAnt (target power) and FortiusAnt sends the actual power back to the CTP. This is what happens in structured training where the target power is based upon your FTP and the training scheme that you should execute. A possible visible scenery is seconday in such a case.

In case of a virtual ride, the CTP sends the slope to FortiusAnt and based upon the parameters, the target power (given the wheel speed) is calculated. From here the same happens.

Bare in mind that you use an old trainer, most likely one before power meters were available in the cycle environment. The brakes are not exact, and calibration difficult. You could calibrate, using a power meter on your bike and try to get the Fortius brake in line. But this will be difficult, since it's environmentally dependant what happens. The algorithms used are best-as-known, given the used hardware.

One might assume, Tacx TTS would have more precise algorithms, resulting in different power-figures. But since they did not publish the formula's, we're all reverse-engineered it as good as possible.

If you discover discrepencies, try the calibration parameters as described in the manual.

[rick8245]

I understand your explanation and thanks for that
The fortius is old I know but on that the average always was about 1 or 2 km per hour lower than outside.
Now with your software is is 3 to 4. So that is not ok.

I will test some things the next weeks

[AfromD]

Hi Wouter,

Bedankt!

I am a Fortius owner in Germany. It is a setup with a dedicated PC and a VGA beamer, completely outdated and collecting dust. Recently, reading an article in c't magazine, I started to wonder how I could get my old setup working with the new apps. Especially since there is a free option again, and my Garmin Edge can work with trainers as well. So that's why I googled (duckduckgo) this project.

I had a Pi lying around, so that was a quick decision. Now I ordered a larger SD card and a 3.5 Inch display for the GUI. The beamer will be replaced by a full HD LED beamer, and the PC will be replaced by an apple TV. Just ordered all of them.

I have an improvement idea for the pi, I will post that as a separate issue.

[SimonFili]

Hi all,

New user here from Québec, Canada. French/English speaking.

My equipment is this:

1. USB: Fortius USB T1942 from 2007
2. Motor : Cosmos & Fortius T1941
3. Controller/PSU : Cosmos & Fortius 300W T1946.50

I was using TTS4 until Jan 1 2025 where it stopped working.

I'm now on FortiusANT, with 2 ANT dongle and Rouvy.
I had to reinstall Win10 on my old PC to get this working and disable devices automatic updates.
You can see this thread for my journey: #475

I'm now struggling with a 100% CPU usage when biking and some glitches and missing RPM from FortiusANT to Rouvy.

Will see if I can update this old machine to a newer one.

Thanks!

[Carlin75]

This is freaking awesome! Just got a tacx 1901 with a ti1932 for free (today). Googled and stumbled on this thread 😁. So with a few things I could get this old trainer connected to Zwift?

What exactly do I need? I have laptops and a rpi3b+ collecting dust😁 what more? Is 2 ant+ dongles a must? The rpi could be connected to a monitor right? Doesn't need a small LCD connected directly on the rpi?

/Carl

[WouterJD]

Welcome to the FortiusANT community

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I'm always curious to know who I communicate with, where FortiusANT is used and what configuration is used.
Brake and what head unit you use, you just told; you could also consider to visit the sponsor page

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Hi @Carlin75 , a T1932 should be connectable through USB to the Rpi (use USB converter plug). The Rpi has BLE and can communicate to your smartphone. No HW needed. (Quick start)
OR
2. add Ble5 dongle to your laptop and start Zwift there. (larger screen)
OR
3. add ANT dongle to Rpi and laptop and communicate through ANT. (the original setup)
OR
4. Connect trainer to laptop, add ANT to both laptops and use those, one for FortiusAnt, one for Zwift.
OR
5. Connect trainer to laptop, add 2 ant dongle and run FortiusAnt AND Zwift on the same laptop.
It's all in the manual, succes and let me know the results, please.

[Carlin75]

Great news! My name is Carl and I live I Sweden. Hopefully I will succeed to connect my newly found iflow to Zwift and enter the digital world of riding a bike. Which of the 5 alternatives is the best? Hopefully im up and running with nr 1 this weekend 😁

[WouterJD]

When no smartphone used, ANT is the stable option.
ANT is less easy to buy and somewhat more expensive

Further, it's up to you.

Succes!

[Carlin75]

Hi.

Tried to connect my trainer directly to the computer running Garmin tacx app. Drivers installed automatically but the trainer didn't show up. Wanted to check if it's working. Is it no longer possible to use a t1932 to the computer to use standard program from tacx?

[WouterJD]

Tacx pulled the plug from their own software. I have one short answer: remove it from your system, waste of time. I do not have one confirmation that anyone can install and use it.
Even if, it will not provide connectivity to 3rd party software like Zwift anyway

[WouterJD]

Hi all,

New user here from Québec, Canada. French/English speaking.

My equipment is this:

1. USB: Fortius USB T1942 from 2007
2. Motor : Cosmos & Fortius T1941
3. Controller/PSU : Cosmos & Fortius 300W T1946.50

I was using TTS4 until Jan 1 2025 where it stopped working.

I'm now on FortiusANT, with 2 ANT dongle and Rouvy. I had to reinstall Win10 on my old PC to get this working and disable devices automatic updates. You can see this thread for my journey: #475

I'm now struggling with a 100% CPU usage when biking and some glitches and missing RPM from FortiusANT to Rouvy.

Will see if I can update this old machine to a newer one.

Thanks!

@SimonFili how are things going?

[koerske]

Hi,
Connected a Tacx I-Flow with my Dell laptop (E5570) and the FortiusANT executable without problems.
iPad with MyWhoosh and I am in.

Thx

[Carlin75]

Hi, Connected a Tacx I-Flow with my Dell laptop (E5570) and the FortiusANT executable without problems. iPad with MyWhoosh and I am in.

Thx

Woop woop!! Did you use 2 Ant+ dongles or a rpi with Bluetooth?

[koerske]

Only Bluetooth. Starting the executable from the commandline with the Bluetooth option

[WouterJD]

Hi @koerske great that you're joining the FortiusAnt team.
May I ask you where you come from?
Just to put another mark on the map :-)

[koerske]

Hallo Wouter, Ik kom uit Valthe. Een klein dorpje ten noorden van Emmen. Geweldig dit programma. Van Marktplaats voor 20 euro een tacx i-flow (met frame) en head unit T1932. Ik was in no time up and cycling :) Met vriendelijk groet, Peter Koers

[WouterJD]

Welkom @koerske in de FortiusANT community
Wanneer FortiusANT bevalt, kan je altijd nog even de sponsor pagina bezoeken!

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