Tacx Neo 2 & Garmin Edge 1000 Speed Sensor

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Re: Tacx Neo 2 & Garmin Edge 1000 Speed Sensor

Post by mcorn » Wed Dec 05, 2018 11:49 pm

FE-C intensity control means varying the resistance of the brake.

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Re: Tacx Neo 2 & Garmin Edge 1000 Speed Sensor

Post by Alex Masalovich » Thu Dec 06, 2018 12:08 am

What follows from this? Does this indicate in what units Neo broadcasts speed data?
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Re: Tacx Neo 2 & Garmin Edge 1000 Speed Sensor

Post by mcorn » Thu Dec 06, 2018 12:19 am

The ANT+ Device Profiles guide on Bike Speed, Bike Cadence, Combined Bike Speed & Cadence, states in section 5.5:

"The bike speed sensor data provides only direct measurement of the number of wheel revolutions. Using the measurement time information an accurate estimate of speed can be made."

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Re: Tacx Neo 2 & Garmin Edge 1000 Speed Sensor

Post by Alex Masalovich » Thu Dec 06, 2018 12:26 am

Please be more attentively:
viewtopic.php?f=60&t=35419#p210840
Please justify that this has to do with Neo.
Neo is not a speed sensor.
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Re: Tacx Neo 2 & Garmin Edge 1000 Speed Sensor

Post by mcorn » Thu Dec 06, 2018 1:02 am

The Neo is an ANT+ compliant device. It is not proprietary. All ANT+ speed data is in the form of wheel revolution pulses.

The Neo is listed on the ANT+ website as FEC, Bike Power, and Bike Speed/Cadence compliant:

https://www.thisisant.com/directory/neo-smart/

Similar to the ANT+ specification quoted above, the ANT+ Device Profile for Bicycle Power states in section 9.6:

"To calculate speed and distance, the receiving device requires knowledge of the wheel circumference in meters. This value
is entered by the user."

So, actual wheel speed must necessarily be computed by whatever device (PC, mobile app, bicycle computer) receives ANT+ wheel revolution information.

I have assumed Bluetooth works the same way.

And as I said above, in a way that apparently bores you, TDA does not care what the actual over the ground wheel speed is as it calculates speed virtually. However, one of the profile settings for a TDA user is tire circumference. I am not entirely sure what TDA does with this. Perhaps it is used in the warm-up or cool-down. I am not really sure.

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Re: Tacx Neo 2 & Garmin Edge 1000 Speed Sensor

Post by Alex Masalovich » Thu Dec 06, 2018 10:23 am

It's not very convincing for me.
mcorn wrote:
Thu Dec 06, 2018 1:02 am
All ANT+ speed data is in the form of wheel revolution pulses.
The Neo is listed on the ANT+ website as FEC, Bike Power, and Bike Speed/Cadence compliant:
Smart roller trainers are also designated as FEC, Bike Power, and Bike Speed/Cadence compliant:
https://www.thisisant.com/directory/genius-smart/
https://www.thisisant.com/directory/bus ... art-t2780/
https://www.thisisant.com/directory/vortex-smart-t2180/
What are the "wheel revolution" for these trainers?
What about the treadmill?
mcorn wrote:
Thu Dec 06, 2018 1:02 am
Similar to the ANT+ specification quoted above, the ANT+ Device Profile for Bicycle Power states in section 9.6:
What does the ANT+ Device Profile for FEC say?
Why don't you provide a link to the source of the text?
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Re: Tacx Neo 2 & Garmin Edge 1000 Speed Sensor

Post by mcorn » Thu Dec 06, 2018 3:22 pm

Alex Masalovich wrote:
Thu Dec 06, 2018 10:23 am
Why don't you provide a link to the source of the text?
You have to have an ANT+ account in order to get access to the technical documents.

If you are interested, you can probably create an account and gain access.

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Re: Tacx Neo 2 & Garmin Edge 1000 Speed Sensor

Post by Alex Masalovich » Thu Dec 06, 2018 5:07 pm

I thank you for the opportunity to participate in the dispute with you.
mcorn wrote:
Thu Dec 06, 2018 1:02 am
However, one of the profile settings for a TDA user is tire circumference. I am not entirely sure what TDA does with this. Perhaps it is used in the warm-up or cool-down. I am not really sure.
It is possible that this is a preparation for connecting the basic trainers through the Tacx speed and cadence sensor using virtual power technology.
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Re: Tacx Neo 2 & Garmin Edge 1000 Speed Sensor

Post by mcorn » Thu Dec 06, 2018 6:02 pm

Alex Masalovich wrote:
Thu Dec 06, 2018 5:07 pm
I thank you for the opportunity to participate in the dispute with you.
mcorn wrote:
Thu Dec 06, 2018 1:02 am
However, one of the profile settings for a TDA user is tire circumference. I am not entirely sure what TDA does with this. Perhaps it is used in the warm-up or cool-down. I am not really sure.
It is possible that this is a preparation for connecting the basic trainers through the Tacx speed and cadence sensor using virtual power technology.
I'm not completely sure. It's possible that some of the TDA functions do not use any form of virtual speed calculations. For example, when you are on the Device page and test a connected Device, such as speed reported by a brake or a speed sensor, you will get a number readout. That may be something that has no virtual speed calculation, so a tire size would be needed to compute a speed number. Some of the non-film functions may not use virtual speed as well.

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Re: Tacx Neo 2 & Garmin Edge 1000 Speed Sensor

Post by Alex Masalovich » Thu Dec 06, 2018 11:26 pm

mcorn wrote:
Thu Dec 06, 2018 1:02 am
All ANT+ speed data is in the form of wheel revolution pulses.
Alex Masalovich wrote:
Thu Dec 06, 2018 10:23 am
It's not very convincing for me.
I withdraw my objections regarding broadcasting the speed data on the profile "Bike Speed and Cadence".
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