Speed sensor, modifying signal?

Thread Starter

manijak

Joined Feb 7, 2017
2
Hi everyone, i'm new here.

I would like to get some hints about what can be done about calibrating speed reading from a speed sensor?
It's a 3 pole sensor, it reads some resistance 14 times per revolution.
I need about half of that, but dont know precise number.
What can be done about it?

I found a similar topic here
http://forum.arduino.cc/index.php?topic=134983.0#/?
mentioning something about CD4089 rate multiplier.
Any ideas?
Thanks a lot
WhatsApp Image 2017-02-08 at 00.35.11.jpeg
 

bwilliams60

Joined Nov 18, 2012
1,350
It would make it easier if you were to tell us what it is you are trying to accomplish and perhaps show a picture of what you have to work with. I assume it is a hall effect sensor but what do you have for a drive unit and what are you using for a reluctor?
 

Thread Starter

manijak

Joined Feb 7, 2017
2
It would make it easier if you were to tell us what it is you are trying to accomplish and perhaps show a picture of what you have to work with. I assume it is a hall effect sensor but what do you have for a drive unit and what are you using for a reluctor?
its shown in the picture in the end of the post, assembly that goes to a bike's wheel, i need it to show lower speed, aproximately half of what it shows now
 
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