Thanks for having a look at this- I have the same problems with trigger; Tacx Flux 2 connected to Samsung tablet running Zwift. Only HR Monitor (Polar) and Controllable via Bluetooth; I’ve moved Speed & Cadence to ANT+ to avoid total signal drop.
Though I suspect my Controllable BT signal may be intermittent during the ride, it seems to respond well enough; but if I stop for 20s or so, Controllable drops and won’t reconnect.
My tablet is on a table stand just in front of my handlebars; distance is not an issue. My HR Monitor never drops, though it is BT as well.
Super annoying as you can suspect! Hopeful you can find a quick fix or get ANT+ working for Controllable as this is a huge QoS issue for us unlucky folks!
Regarding Tacx trainers, they are really popular here in Europe, as is the Android platform.
In the case of FTMS Bluetooth spec, I have found that Tacx Smart trainers are
almost fully compliant and have high degree of feature support.
Until now the only little discrepancy I have found is that setting Target Resistance Level
accepts SINT16 instead of the UINT8 determined by the spec. It’s annoying, but
not hard to work around in case Zwift is even using this feature.
Setting Targe Power and Bike Simulation Parameters like grade, wind speed, crr
and, wind resistance coefficient all work as expected. Same goes for connections.
I would look for the bug on the application side.
It could well be some dependency in the BLE stack, or simply an error with the application state.
I know both are really hard to debug, especially when the code base is carrying some significant
technical debt, but this issue has been known for some time now.
Hi Neil,
Sorry for delay in responding. You can shoot an email to support@zwift.com, supply all relevant details and mention this thread.
This will help mgmt bump the priority for this.
Thank you for the feedback.
Will
Thanks for replying. I figured maybe there’d be delays around thanksgiving. I did contact support on Saturday (via the app IIRC, but I didn’t mention this thread). I haven’t heard anything back yet.
Neil
Coincidentally(?) I did get a support response just after replying here. Unfortunately it just said to read the article on troubleshooting using a Pixel for Zwift, which doesn’t seem relevant because I’m using a Pixel 5.
I’m seeing exactly the same issue with my flux. That being, signal drop, and when you look to reconnect, the FLUX appears to have 2 BTLE IDs? Did you find a cure?
Oh crap sorry, forgot this one was tied to Android.
On my Android device I’ve been using Ant+ as well. Not all Android devices support it and you have to install some packages from the Play Store but it works for me.
January 2024, having the same issue with Galaxy Tab A7 Lite and Tacx Flux S. Previously used Zwift on MacBook and Windows with ANT+ connector, no issues. Wondering if it’s a platform issue or connection type issue.
I am also having a similar issue. All my sensors are connected Android phone app to Win10 PC.
First around the start of Feb all sensors disconnected at once. Reset and was fine. Today Garmin Dual HRM connected but said no signal and Cadence sensor dropped out part way through ride.
The sensors work with my Garmin Edge over Ant+ and I can connect them to my phone via Ant+, they also appear connected on the phone’s Bluetooth settings.
This is very frustrating. Can someone from Zwift help?
That’s interesting as I’ve never formally installed them there.
If I solve this today I’ll say how. Otherwise I’ll be buying an ANT+ receiver for the PC.
One thing to keep in mind is that other apps or devices that have paired to your trainer or HRM via Bluetooth can hijack the signal if they are still running, so shutting off or deleting anything that has ever paired to the trainer via Bluetooth can help, and any of those devices paired to the phone’s Bluetooth service should be disconnected and “forgotten”. With ANT+ the read-only sensors such as power, cadence, and heart rate can generally be paired to multiple devices without harm, but there can be only one thing controlling resistance.
If you buy an ANT+ receiver, you may need the information in the thread linked below. The Coospo RC401 is an inexpensive ANT+ dongle that works fine and is widely used.
