Cadence and HR blinking

  • Hi, I just discovered Maximum Trainer this week after seeing the banner on mentioning it. I gave it a shot with a workout today and so far my impression is very good! However I am experiencing a mild annoyance where both my cadence and HR numbers blink approximately once every second, alternating between a number and a dash “-“. The rate which cadence and HR blink is not always in sync with each other.

    I tried switching modes for both widgets, but no luck there. In graph mode, both HR and Cadence lines appear smooth without dropouts.

    My HR strap is a Garmin 010-10997-00, and my cadence is coming from my Pioneer SGY-PM910 power meter. My ANT+ dongle is a Garmin, and it is located directly under my bike using a USB extension.

    Any suggestions?

  • Hi there,

    The - are shown when no data is received after a while (for this metric).
    Do you see dropout on the graph? It should not behave like a 0 value, Let me know if you can show a screenshot of a whole workout.
    if the ANT+ dongle is close enough and not blocked by solid object, I am not sure I can see why you are having these, did you try closing other program that may be using too much CPU?


  • Sure, here's a screenshot from the end of my workout: MaximumTrainer screenshot
    I managed to catch it while neither cadence or HR were "blinked" ... but they assuredly were blinking throughout the entire workout. As you can see, the graphs appear to be 'smooth' with no dropouts (no data dropping to zero).

    While I did not check CPU usage during the workout, I'm quite confident it was not an issue -- I'm running MaximumTrainer on a high end gaming PC. But I will check on my next workout tomorrow! I'll perform a screen video capture to demonstrate the behavior, assuming it happens again.

    FWIW: You'll notice I have YouTube playing in a chrome browser in the screenshot. I experimented with the built-in browser the first 1/3 of the workout, and ultimately switched to this configuration because I found I couldn't live without adblock 😭 However, the blinking was there whether I used MaximumTrainer's built-in browser or not (tried it both maximized and windowed).

  • Nice thanks for the info! haha yeah integrating adblock from the getgo would be nice I agree, i'll see if that's possible with chromium.
    Allright keep me posted on that,

  • This is unrelated, but it appears that the "Remember my password" checkbox has no effect:

    MaximumTrainer Log In Screen

    Beginning my workout shortly!

  • I had a bit of drama getting my workout started today for some reason.

    After starting up MaximumTrainer, I selected my workout, and noticed in the bottom left corner there were messages to the effect that it was attempting to find my ANT+ sensors. The App claimed my ANT+ receiver was connected, but couldn't find the sensors no matter how long I waited. I tried unplugging, replugging, and even letting Windows re-install the drivers, but no luck. Ultimately I closed and restarted MT, and it found .... most of my devices, but not my Pioneer power meter. hmmmm

    Then I burned nearly an hour pulling the batteries from my Pioneer PM, changing modes from dual, to single, to pedal monitor, and back to dual mode. Suddenly MT was able to find my PM. Very strange. All during that time, my Wahoo Bolt was able to connect to the PM, as well as all of my other sensors.

    Anyways, I completed my workout, and I captured some video footage demonstrating the blinking cadence and HR, also showing my resource utilization while this happens:

    I attempted picking up my ANT+ dongle and moving it around while pedaling, holding it very close to both my HRM and Pioneer crank, which did not seem to make any difference in the frequency of the blinking.

  • New observation: the blinking only occurs while the workout is recording. If the workout is paused, neither cadence and HR blink.

  • Hi,
    I also have same problem.

    I'm using version 3.0.5 on my MacBook Pro MacOs 10.14.3.

    My Ant dongle is CycleOps.

    Heart rake blink during all workout.

  • Thanks for all the details @matt-d
    I'll be able to investigate more with that
    Really appreciated!

  • 我是昨天才知道這個軟體,使用上非常滿意,但是我也遇到心率讀數一直閃爍的問題,

  • My HR is also blinking

  • @admin @matt-d
    Hi guys, I have the same problem with my Bontrager HR strap. Has anyone made any progress on this one? My Garmin ANT+ stick is positioned under my BB as Matt has it and all other data coming from my Elite Direto smart trainer (cadence, speed, power) are consistent and not flashing. Nothing changes moving the stick around or putting a fresh battery in the strap. No dropouts are recorded and when looking at the FIT file the HR looks as smooth as expected.
    CPU usage is barely hitting 30% during the workout and I haven't had this issue with any other cycling app I use or when reading my HR on my Lezyne head unit.
    It looks to me that the timeout before showing the "-" is too short and is shorter than the broadcast interval of the HR strap (in my case) and power meter and HR for Matt.
    Not affecting the workout or the data, it's just annoying when you're trying to focus having this flashing value.

  • I'm also seeing the same problem, just with heartrate though.
    I've started doing a few workouts on my rollers recently using just a cadence sensor and my HRM, and recording the session using Maximum Trainer and noticed the heart rate doesn't flash during these workouts. Which would indicate it might have something to do with the power recording that is causing the blinking. I see that the source code is now on Github, I might have a look at it when I get sometime and see if I can see what may be causing the issue.
    (its not really an issue though, the heartrate date is still recorded perfectly)

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