Holly cow! I can't read through 53 or so pages of comments here now - I haven't a week to spend!
... In fact, I've spent a whole day or more without much success at finding what I'm looking for...
I have two ebikes wtih the Tongsheng TSDZ2 (a torque-sensing mid-drive), both "48V", one claims to be 15A and the other 18A. The trouble is, the 15A seems to out perform the other one, though the bikes themselves should otherwise have nearly identical performance. Then, someone on the main TSDZ2 thread showed some images of some graphs of an application in French that shows graphs and such that mapped amps, voltage, distance, altitude, and a whole host of things, one of which was CADENCE! And this is a big one since the TSDZ2 is a torque-measuring assistance system that also has a cadence cut-out RPM which we riders suspect is related to motor RPM (as opposed to a speed limit setting). So, I thought that at a minimum I'd like to have the basic V, A, speed and cadence measurements to compare the one to the other. Plus, I think it's about time I have a good "ebike computer." So, I asked them about a version in English without success. So, I went looking.
My FIRST choice was the Cycle Analyst, but even at the V3 level, it doesn't have cadence, though I well respect that everybody loves theirs. NOR, by the way, do I want or need any type of control of the system - I'm just looking for data collection... Trying to add cadence data to a CA unit is a fools errand - it has to be built into the data collection; I know from past experience with real-time monitoring of internal combustion engines that trying to "glue" together disparate data streams successfully will be doomed to failure and prove to be a waste of time. So... I need a cadence counter in the mix.
Eventually, I found the Speedict products, but have had a hard time getting good data. Their google-drive links aren't working for me for whatever reason. And, as I said, I don't want or need anything to try and control my system for me! AND, I don't want to have the left over, disused crap on my bike, either. ... Some features I don't use are one thing, but the whole host of things I read about with the Neptune (and CA v3) are just not what I'm looking for at all.
Soooooo... I looked at Speedict's products and I'm wondering; what about this Mars product from Speedict? Hmmm...
Data available about this product is remarkably hard to find, and it's entirely unclear if it will even do what I want. I get it that it costs 75 Euro - beyond that, it's a mystery! But I do like the list of claimed features someone wrote up (here on ES)...
If not the Mars product, then what?
Oh, BTW, my two ebike's build pages:
My Marin San Rafael frame-up build:
https://endless-sphere.com/forums/viewt ... =3&t=89956
My old Legran, a Raleigh Replica:
https://endless-sphere.com/forums/viewt ... =3&t=88943