Here's some info that came out on the google wattage group from Quarq that will be of interest to those with newer quarqs (red led and cr2032 batteries). I've copied the message directly below. Hopefully this is ok by the slowtwitch forum rules.
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Jim@Quarq
Jul 18 (18 hours ago)
1. Change log for production firmware is on the web site. http://www.quarq.com/...ort/firmware-updates
2. Qalvin for PC: https://www.quarq.com/qalvin/
3. Qalvin for Mac: All done. Almost through the Mac App Store acceptance process. Stay tuned for release.
4. Accelerometer cadence is now in final testing. There are some not-so-secret beta testers in the field. We are coming down the home stretch to public release, so here are a few details.
- We have been working very hard on accelerometer cadence for quite a while. The accuracy and performance of the magnets and reed switches is very high, setting a high standard for expected performance.
- All Quarq power meters with an LED and CR2032 are compatible with accelerometer cadence. When ready, we will release a new firmware for these devices.
- Accelerometer cadence is automatically enabled when the magnet is dislodged or removed. No user intervention is needed.
- Accelerometer cadence offers convenience and was developed for bikes that have limited options for magnet placement. Performance is excellent up to 160rpm and in all but the most extreme vibration environments. A magnet is the preferred method for cadence measurement. It ensures that cadence is the most accurate no matter what the conditions.
- In terms of accuracy, single pedal stroke cadence accuracy decreases by a maximum of ~2%, but cumulative accuracy is unaffected. There is little or no impact on cumulative power values such as kilojoules, average power and normalized power.
- Benchmark tests show the accuracy of Quarq’s accelerometer cadence matches or surpasses other products that use accelerometers for cadence.
Jim
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Jim@Quarq
Jul 18 (18 hours ago)
1. Change log for production firmware is on the web site. http://www.quarq.com/...ort/firmware-updates
2. Qalvin for PC: https://www.quarq.com/qalvin/
3. Qalvin for Mac: All done. Almost through the Mac App Store acceptance process. Stay tuned for release.
4. Accelerometer cadence is now in final testing. There are some not-so-secret beta testers in the field. We are coming down the home stretch to public release, so here are a few details.
- We have been working very hard on accelerometer cadence for quite a while. The accuracy and performance of the magnets and reed switches is very high, setting a high standard for expected performance.
- All Quarq power meters with an LED and CR2032 are compatible with accelerometer cadence. When ready, we will release a new firmware for these devices.
- Accelerometer cadence is automatically enabled when the magnet is dislodged or removed. No user intervention is needed.
- Accelerometer cadence offers convenience and was developed for bikes that have limited options for magnet placement. Performance is excellent up to 160rpm and in all but the most extreme vibration environments. A magnet is the preferred method for cadence measurement. It ensures that cadence is the most accurate no matter what the conditions.
- In terms of accuracy, single pedal stroke cadence accuracy decreases by a maximum of ~2%, but cumulative accuracy is unaffected. There is little or no impact on cumulative power values such as kilojoules, average power and normalized power.
- Benchmark tests show the accuracy of Quarq’s accelerometer cadence matches or surpasses other products that use accelerometers for cadence.
Jim