Major firmware update for AeroPod

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Velocomp
Velocomp CEO
Posts: 6410
Joined: Fri Jan 11, 2008 8:43 am

Major firmware update for AeroPod

Post by Velocomp » Thu Feb 13, 2020 1:40 pm

We've been working hard all winter on a major firmware update for AeroPod.

33 beta versions later (!) we are ready to release FW712.

New to this firmware are two profiles that measure CdA (profile 4 and 3).

Profile 4 is used for highest-precision CdA testing when riding in loops or out-and-back rides.

Profile 3 is used for race-day live CdA measurement.

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NEW: Profile 4, Highest accuracy CdA testing, riding in loops or out-and-back rides

Profile 4 is used when riding on closed loops or out-and-back courses, and is designed to provided highest accuracy and consistency of CdA measurement.

Here's how to use it:

1) Set your AP to profile 4

2) Go to a place where you can do closed-loop or out-and-back lap testing. At the end of each lap you will mark the lap using your Garmin or Raptor bike computer.

3) Note that you can use the automatic-lap-marker feature of your Garmin or Raptor, or alternatively you can mark laps manually with your bike computer's lap marker button (note: in my testing I found that, unless the GPS signal is strong, bike-computer-based auto-lap marking is less reliable).

4) Each time a lap is marked, the Garmin/Raptor displays your measured, average CdA for the just-completed lap. The averaged CdA value is shown for 30 seconds; after that, live CdA display resumes

5) In the ride file, you’ll see each lap’s average CdA shown in the HR field, for 30 seconds, at the end of each lap. This lap CdA value is more accurate than the computations made in Isaac. The lap CdA appears as a flat line, 30 seconds long, in the HR field.

Why is profile 4 measurement now more accurate?

When riding in closed-loop laps AeroPod can fine-tune, with very high precision, its accelerometer tilt calibration. For example, in a one mile loop, the fine-tuned tilt calibration precision at the end of each lap is 99.98%. Using the fine-tuned calibration measured at the end of each lap, the FW calculates the average CdA for the just-completed lap. Then, for the next lap the tilt calibration is updated with the measurement from the last-completed lap, improving the accuracy of the next lap's CdA measurement.

So, when riding in closed loops or out-and-back routes, Profile 4 provides the highest accuracy and consistency of CdA measurement.

When using profile 4 high-accuracy CdA lap measurement, it’s best to have a 1-2 mile long loop or out-back, and to do 2 or 3 laps in succession per test.

PROFILE 3: TRAIN/RACE-DAY LIVE CDA

Profile 3 is intended for CdA measurement on training and race days. What’s different about profile 3 is that a different tilt correction method is used that is continuous and does not require you to ride in closed-loop laps. The profile 3 correction algorithm is very good but it doesn’t achieve the 99.98% precision of the profile 4 lap feature. So, in profile 3 you will get useful, live CdA throughout the ride, without the need to ride in loops or out-and-back routes, but perhaps with a bit less precision.

Here's how to use the "Train/race Live CdA" feature

1) Set your profile to profile 3 (you can copy your profile 4 settings into profile 3 if you wish, but you’ll need to manually select profile 3 using Isaac).

2) Start riding. After a few minutes live CdA will appear, and continue to appear for the remainder of your ride

3) If you hit the lap button while in profile 3 you’ll see your average CdA for the prior lap, but there won’t be any lap-CdA correction applied

We will be posting this firmware soon on Isaac, but if you're anxious to get it sooner, please email technicalsupport@velocomp.com
John Hamann

speedyvelo
Posts: 54
Joined: Sat Dec 03, 2016 11:40 am

Re: Major firmware update for AeroPod

Post by speedyvelo » Fri Feb 14, 2020 9:34 am

John,

Thank you for the upgrade.

I use the first 3 profiles of the aeropod as a powermeter without a DFPM and the Profile 4 with DFPM to evaluate CdA under different setups.

Q: With this change am I going to have problems when I use profile 3 as power meter?

Can you discuss profile 3 as a power meter vs profile 3 for Cda during regular riding.

-=terry=-

Velocomp
Velocomp CEO
Posts: 6410
Joined: Fri Jan 11, 2008 8:43 am

Re: Major firmware update for AeroPod

Post by Velocomp » Fri Feb 14, 2020 10:39 am

You can continue to use profile 3 as a power meter; in fact, with the new FW profile 3 will function even better as a power meter.
John Hamann

GooseRider
Posts: 58
Joined: Wed May 10, 2017 10:52 am

Re: Major firmware update for AeroPod

Post by GooseRider » Fri Feb 14, 2020 3:28 pm

John,

would that be the best profile to use when using the Aeropod as a power meter? Or should one rather use profile 1 or 2? Any restrictions regarding the first minutes to ensure accuracy?

Morten

Velocomp
Velocomp CEO
Posts: 6410
Joined: Fri Jan 11, 2008 8:43 am

Re: Major firmware update for AeroPod

Post by Velocomp » Fri Feb 14, 2020 5:30 pm

GooseRider wrote:
Fri Feb 14, 2020 3:28 pm
John,

would that be the best profile to use when using the Aeropod as a power meter? Or should one rather use profile 1 or 2? Any restrictions regarding the first minutes to ensure accuracy?

Morten
If you're not using the lap button, for power meter function then any of the 4 profiles is fine. If you're using the lap button, then use profiles 1-3.
John Hamann

speedyvelo
Posts: 54
Joined: Sat Dec 03, 2016 11:40 am

Re: Major firmware update for AeroPod

Post by speedyvelo » Fri Feb 14, 2020 10:18 pm

Thxs John

-=terry=-

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