Magene GEMINI 210 cadence sensor

Mawof wrote:

Hi All,
Did anyone tried to connect TomTom Spark with Magene GEMINI 210 cadence sensor? Both supports BT so I should be able to do it, but Spark does not recognize sensor.

It only uses dual speed / cadence sensors, not stand alone cadence or speed sensors so this may be why it is not working. It also may be that the BT+ Protocols are different. This is due to the fact that cheap models are more likely to use the base BT protocols and not customize them for advanced features or settings like more expensive models do (and there is no way of knowing if a manufacturer has tweaked the protocols to take them out of compliance). The BT standard is in such a way a 'standard' that it can be widely interpreted with different settings for buffer sizes, time outs, profiles, protocols, antenna configurations, etc.. TomTom cannot change their code every time a manufacturers messes with the BT coding. This is a case where paying more will not increase the chances of connectivity, it may actually decrease it. There are thousands of models out there so there is no way for TT to test them all and since the manufacturers often tweak the BT settings there is no way to know upfront if a device will work or not.

I hope this helped answer your question. If so, please mark it as a solution so others can look for it if they have the same question.