How to Setup a Torque Sensor with a V3.1 Cycle Analyst
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- čas přidán 3. 02. 2019
- In this video Justin illustrates how torque sensing devices are configured on the latest V3.1 Cycle Analyst firmware. Here we've got a Sempu torque sensing bottom bracket on an ebike build and are adjusting the bike for digi-aux control for 9 levels of assistance from 0 to 4 times the human power input.
This process has been streamlined substantially since the V3.0 release.
For more detailed information, have a look at the CA3 info page and user manuals.
www.ebikes.ca/product-info/cy... - Věda a technologie
Thanks Justin - these tutorial videos are great. Helped me tweak my new system (which is awesome)...
This video helped me get my erider bottom bracket set up. While it would have been easier if it had a preset like some of the other torque sensors do, going through it and understanding all the different settings made me realize just how customizable and adaptable the cycle analyst really is and the applications it can be used for outside of just a plain ebike controller. The name is far too humble.
The ERider does have a preset with the 3.15 firmware which you can get from the CA setup utility tool, it will be in the "beta" release firmware directory as 3.15b3 if you click "get latest firmware from grin".
Yeah, in the original days of V1 and V2 devices the name was a bit more apt!
Are there any other types of displays available? Something more modern?
Hi, thank you for this video.
Paired with phaserunner, is it still possible to get regenerative control from PAS only (without ebrake sensor), by setting low PAS power (or low torque, or low rpm) threshold activating the regenerative brake ?
BTW, is it necessary to connect PAS directly to cycle analyst, or is it able to retrieve the data from the controller if PAS is connected to controller ? (this would simplify wiring)
Hi Kurtz, we anticipate releasing our 3.2 CA firmware fairly soon that has back pedal regen features implemented. If you want this now you can email us and we can send you copies of the alpha release firmware to install and play with, but the public beta builds are still a little ways away. The PAS sensor must be hooked up to the CA, not the controller.
I have just a voilamart 1500w motor with a standard cadence pas sensor, it is way to touchy. I barely pedal and the motor kicks in full force and continues even after I stop pedaling, I’ve learned that a light twist of the throttle kills the pas so that has been my way around it. Anyways I need something that really makes the power ease it’s way on as I pedal so you get the adequate power for how much torque you give. Is this compatible with my set up? I’ve got a voilamart 1500w motor with a 52v 20ah battery
In theory yes but it's quite a DIY job to retrofit a factory bike to be controlled via the Cycle Analyst. Doable but not at all plug and play. You gotta be hardcore into custom wiring and ebike electronics stuff.
It looks like 3.14 doesn't have the Erider as an option. Is there info on what all the settings should be if I want to use the Custom option?
That's correct, you can update to the 3.15b3 that is downloadable via the software suite. Some ERiders have 18 poles, others have 36. Torque scaling is about 70 Nm/V
Is there a preset for an erider?
Hey, ive got a ebike with a torque sensor with the cycle analyst v3. When i pedal, it jerks the bike meaning the motor starts up for a brief second then stops right away. Why does that happen?
Most often because the PAS Start and Stop RPM thresholds are set incorrectly. If you navigate to the 3rd display screen that shows the pedal RPM and you see it alternate between an initial cadence value and then 0 rpm, that can confirm if this is the case.
@@GrinTechnologies and how do I fix this
@@GrinTechnologies there are usually levels of assist I can pick aswell. Where can I change those from?
@@Blue-kd7lv Have you read the Cycle Analyst manual and documentation on GRIN website?
It's pretty well documented.
ebikes.ca/product-info/grin-products/cycle-analyst-3.html
I have the erider and only the P moves up and down and not the D. Is this normal?
Yes. The T9 sensors have a single wire pas signal, not a quadrature
I'm excited to switch out my Bafang DP C18 display for a Cycle Analyst with torque sensor input (or maybe the DP C18 has that?). I pretty much use the pedal-assist up/down buttons for throttle most of the time, since my throttle lever feels cheap and about to break, has maybe 2 or 3 power levels that aren't predictable, and it just feels more natural. Torque sensing assist sounds great -- and I really appreciate Justin's ethos of building human-scale mobility solutions that respond intuitively (great long tour/interview here: czcams.com/video/IxB2j-egWcQ/video.html).
I'm working on a super-heavy-duty version of the Carla Cargo trike cargo trailer with electric assist (going for 2,000 lbs payload capacity). I've thought to use linear (telescoping) position sensors to regulate trailer assist based on forces applied through the tow arm. Seeing stress-sensing torque sensors in action, I'm now thinking a bow-shaped yoke on the tow-arm, with stress sensors on either side of the tongue, could provide standard voltage output for off-the-shelf PAS controllers, AND possibly provide 'stereo' info to deal with potential overrun of the trailer on the pilot vehicle when, say, braking downhill (differential torque sensing on either side of the tongue could apply differential regenerative braking on the trailer rear wheels to keep it tracking resistance-free with the tow arm, and ultimately lock up the trailer braking to keep it from jack-knifing if forces got too out of hand).
Is this feasible? Would you have anyone there at Grin willing to guide me on this (as well as a hub-motor / wheel mount challenge I've commented on, separately -- need a wheel motor with 1" spindle bearing, OR, a half-axle torsion suspension wheel mount similar to FlexiRide trailer wheel mounts, but with 20mm spindle. Find my project notes Twitter @eMULE2020
Hi Robert, a force sensor inside the trailer link is an excellent idea that works very well, we know more than a few people who have built powered trailers this way and have contemplated making a commercial product to facilitate this. No need to even use the PAS input, just have the signal go directly to the throttle input of one of our controllers and allow the signal to go below 1V down to 0V as well. Then it will work bidirectionaly by default both to do regen on the downhill and power on the uphill, all with zero input needed from the rider.
Newby question. Can you connect a cycle analyst to any controller?
So long as the controller has a throttle input line and accessible battery input leads, then for the most part yes. You can use the stand alone CA shunt inline with the battery leads and feed the throttle output signal of that to the throttle input line of the motor controller. Have a look at the diagram on section 3.2 of the CA3 user manual
www.ebikes.ca/documents/CycleAnalyst_V31_Web.pdf
@@GrinTechnologies got it, thanks man😊
Jeez, I have more money in this bike than a car. I just a torque sensor for the bottom bracket and wouldn't you know it, I bought the only one that doesn't work with a version 3.1 cycle analyst unless I download new firmware because it has 36 poles. Will it work at all without downloading the firmware and if not can I download the firmware on my android if I have the correct cable?
It will work just fine, the only issue is that your pedal cadence will read a bit higher than it should. This won't affect the actual torque assistance at all.
I like the possibility to link a torque sensor on the CA but this display is so big.. 😬
Yes, it is pretty big. The first model was deemed too small by most people. Perhaps there is a middle ground ;-)