john61ct wrote: ↑
Oct 18 2019 9:05am
I don't know yet. I was counting on using one, but the Nucular guys say 100% unneeded with their new design / software.
Then you would have to ask the Nucular guys exactly what their specific feature list is, and exactly how each of those features replaces a CA feature, to know whether you would need a CA or not.
But first you have to know what you want a system to do, before you have any idea whether any feature or lack thereof has any bearing on your needs.
The CA has many features, listed on the Grin Tech CA3 page, and within this thread are occasional uses for them that are different than typical usages, including different firmware for Solar charging (using an aux input to monitor a second shunt) that could be used for other things than Solar, and different firmware for a battery testing station, etc.
If you don't need any of the stuff the CA does, then you don't need a CA. But you gotta know what you need the system to do, and what all the other non-CA parts already do for you, to figure that out.
Let's say you need a torque (current) based throttle control--the CA can translate that for you into what a speed-based controller needs to operate but give you the basic feel of torque control, but if the controller laready directly does it, you don't need the CA.
Let's say you need relatively accurate charge and discharge monitoring, in watts, amps, amphours, watthours, wh/mile, etc. The CA does that...but again, if the controller does them all you don't need a CA. If the controller does all of them except wh/mile and you need that, then you need a CA for just that function (but it takes the others to get that).
Let's say you need a speedometer and odometer...the CA does that, but if it's the only thing the contrller doesnt' do (besides wh/mile which is tied to the odo), you don't need the CA because bike computers that do it are much much cheaper.
So again, you gotta decide what you want a system to do to know what you need to make the system from.
I suspect throttle ramp mapping / curve adjustment is one gap - are those all one thing?
I don't know what they are in the Nucular stuff.
There is no curve adjustment in the CA that I'm aware of (wish there was), you can look at the pages for throttle setup in Teklektik's UUG (early in this thread, linked on the Grin Tech CA page) to see specifically what (and how) the throttle stuff does in the CAv3 at the time the last update was made to the UUG (might have slightly different capabilities now, several point releases down the road).