ANT+ heartrate sensor not automatically detected on Karoo 2

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Miha Markic

• March 18, 2022 10:40

Since last few firmware updates my Garmin ANT+ heartrate sensor is not automatically detected on a ride anymore.

However if I go manually to Settings/Sensors then it detects it and from then on it works as expected.

I assume few things here:
a) sensor doesn't start from beginning but only after I sweat a bit (will try use some water next time so it starts sooner).
b) Karoo 2 doesn't see the sensor at the beginning and it just gives up trying (to conserve battery?).

Anybody else?

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  Ali

  • March 18, 2022 11:15

  Hi Miha, we have seen that HRMs generally require to be moistened a bit for them to wake up. You can also restart the sensor search in the quickest way by going to the devices page on the Control Center.
  
  Let us here know if the behavior on the Karoo doesn't change even when the strap is moistened enough.

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  Miha Markic

  • March 18, 2022 11:57

  Will certainly try next time. OTOH sensor not being active at the start should be handled as well, in fact, it was working before. Going through manual refresh isn't ideal.

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  Marcio Machado

  • March 18, 2022 12:32

  Karoo has an excellent proposal, but it has serious connection problems ANT+, Hammerhead secretly assumes this, until then the problems were only with power meters, in HR I had not seen it yet, if this is a problem, firmware is not able to solve it, because the problem is physical on the ANT+ hardware.

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  Miha Markic

  • March 18, 2022 12:51
  • Edited

  Nah, it's definitely not a hardware issue because:
  a) it worked before
  b) it finds the sensor if manually searched for
  I assume it doesn't try to connect automatically after a period of time anymore.

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  Miha Markic

  • March 22, 2022 08:20

  So I tried with moistened sensor after a couple of minutes since I turned on Karoo2 and it recognized it correctly.
  So I still guess, that it's a problem that Karoo2 gives up after some period of time.

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