Cycle Analyst 3.1 speed sensor (spoke magnet)

Joined
May 14, 2013
Messages
12
Hi,
I can't find that information. I want to use ordinary magnet speed sensor with my Cycle Analyst 3.1.
I think the input pin is ready for hall sensor signal, so I should send +5v pulses from the magnet sensor to make it work.
Is that right?
Thank you in advance for your help,
Kamil
 
Need a CA-DPS version.

CA-DP uses a motor hall signal.

https://www.ebikes.ca/documents/CA3-0_settings.html#SpdTag

https://www.ebikes.ca/product-info/cycle-analyst-3.html

https://www.ebikes.ca/documents/CycleAnalyst_V31_Web.pdf

 
Thank you for your reply.
I am trying to figure out what kind of signal is sent between CA-DP/CA-DPS and CA. I suspect it's analog hall signal, and I am trying to confirm it would work, when I pass +5v via magnet sensor (and produce a pulse that way).
Unfortunately, it's not specified on CA website...
All the best,
Kamil
 
Those CA-DP vs CA-DPS are different models of CA, they don't communicate with each other.

Did you read the links I posted?

Googling a bit helps too.

Apparently can modify in either direction if needed.

https://endless-sphere.com/forums/viewtopic.php?p=1025948#p1025948
 
All models of the CA are exactly the same inside for the speed sensor input, except that the DPS and the SA versions happen to be prewired to a reed-switch type of spoke sensor. (which can be removed and replaced with a different one if you like). THe DP version is prewired to the yellow wire on the DP connector, to use a hall signal from the motor via the controller's DP connector.

There is a pullup resistor on the speed input pin (Sp) inside the CA to the 5v. So either a hall or switch type spoke sensor will work on either DP or DPS or SA version of the CA.

Almost all spoke sensors from bike computers are the switch type (reed switch), so you wire the two wires from the speed input on the CA to the ground wire on the CA.

If it's a three wire sensor, it is probably a hall. In that case, the signal wire goes to the speedo input, the power wire goes to the CA's 5v, and the ground wire goes ot the CA ground.


There isnt' actually any "signal" sent.

If it's a two wire sensor, then all it is, is a switch opening and closing, between the Sp pin and ground.

If it's a three wire sensor, then it's the same thing, except it's just the (digital) hall sensor grounding or not grounding the signal.

So you don't send a 5v signal to the Sp input, you just ground it momentarily to create the pulse.
 
Thank you for you comprehensive answer.
In short, I wasn't sure whether I should wire the speed sensor to ground or +5v.
So that's the correct wiring:
ca31-speed-sensor.png

All the best,
Kamil
 
Yep, that's the wiring, as described in the CA info pages. :)

If you're using a hall sensor, you do use the 5v to power the sensor, though.
 
Found this thread while searching for solutions to my missing speed rating.

In my situation, I have a Phaserunner hooked up to a DD motor, but the CA shows no speed sensor rotations when I spin the motor. I did have to make a motor cable adapter myself, so it seems like I have some things to check there; specifically that the wire I connected to "speed" (port 3) on the L10 plug is actually doing anything when I provide 5V+GND and then spin.

What I'm curious about is this little tidbit of text:

Speedo Pulse Input (Sp): Can be wired up with a reed switch and magnet speedometer sensor, or connected directly to one of the hall signals in a direct drive motor.

In theory, could I just spice one of the hall sensors into the speed wire?
 
I'll just go ahead and answer myself as I found the answer elsewhere, doh!

https://endless-sphere.com/forums/viewtopic.php?t=107259#p1576136

Raphael303 said:
The white wire "speedometer signal" that goes to the Phaserunner/Baserunner L1019 plug need to be paralleled with one of the hall signals if your motor does not provide a speedometer signal.
 
Back
Top