Originally Posted by
dr_lha
Interesting. I took a punt on it because it was cheap and I was bored. So far I have only tried it by itself, and it worked fine as either a cadence sensor or a speed sensor over BLE using Cyclemeter or Wahoo Fitness app, but I can't get the damn thing to work with TrainerRoad iOS app (it works with their Mac app though).
One works, I tried two or one of these and one of the RPMs. Anytime you had more than one, the whole thing got confused. That was with Cyclemeter under BTLE. I had some issues with using it as ANT+ but frankly, I didn't pursue it when I figured out that there was a conflict at that level. I wanted it to work in both BTLE and ANT+
Did you post that review on Amazon about it interfering with the RPM? Seems odd that it would do that given that even if they're the same tech, BLE devices should all have unique IDs. I will try it with my broken BlueSC (that only reads cadence after it got sucked into my wheel and ripped apart), but the VeloComputer people seem to give dire warnings about having magnets on your bike, as it seems their device works by comparing against the Earth's magnetic field, rather than a accelerometer.
Yep, that was me. It is odd, but what I think I was able to figure out with the ID's showing up in Cyclemeter is that there was some sort of conflict there. Apparently Wahoo had a hand in helping Cyclemeter do their speed/cadence software and it could be something in the driver side there too. That said, I tried for a couple of weeks to contact the guy via email, Facebook etc... and there was no response. I even offered to help figure it out if he'd work with me but there was no response. I finally just went to Amazon and they took it back and notified the vendor. Then he got in contact with me. At that point, I'd moved on and really didn't feel compelled to help him debug his product if the tech support was going to be that difficult. I'd already come up with a solution that worked anyhow.
Cyclemeter has no issues with any other sensor I've tried, the Wahoo Fitness RFKLT+ had no issues with ANT+ bridging of anything else. And none of my other dual sensors that are both BTLE and ANT+ in speed, cadence, speed/cadence or HRM had any issues whatsoever with Cyclemeter, Garmin or RFLKT+. It was just this thing which I *really* wanted to work.
The problem is that I think the hardware is almost identical to the Wahoo RPM. I think either the two sensors confused each other or there is some confusion at the head end. Either way, I can't debug it myself with the tools I had although the Nordic Semiconductor utility (that's how you change the personality of the VeloComputer thing) does see the Wahoo device and understands it as well but can't change it.
I think it would be fine in a single sensor environment. You may even be able to get it to work in pure ANT+ mode with multiple sensors although I could not and didn't spend the time trying to figure that out after the issues I had. I already had too much time into it and since it wouldn't work in BTLE mode with multiple sensors, it wasn't really useful to me.
Yeah? I've mounted and remounted mine a few times, and the rubber seems to be holding up so far.
That's good. I think the sensor and the mount have potential just are not ready for prime time yet. I like the carrier for the device better and think it's more trim on the rear hub. The problem is that I think the "ladder" like rubber pieces are too thin. Mine tore when I tried to put is as snug as I thought it would work. I also had it on the crank and somehow snagged it with my shoe. Either way, I think a little re-design that beefs up the latching part is called for. It would never survive on my fatbike on on my gravel bike, I think. Road bike, probably ok unless you tore it putting the bike on/off a car rack or something. Compared to the Wahoo RPM which, if you use the zip ties mount, is much more robust and solid in comparison.
Out of interest how does it's size compare to the RPM?
They are for all intents and purposes the same size. You could mount them in each other's carriers. That's how close they are.
All in all, a great problem to have. Accelerometers are getting so cheap that the magnetic sensors are almost becoming more expensive. That's great because it means we eventually do away with all the PITA alignment issues.
J.