Wiring Hall effect on OptoIn

[g-snoop]

Hello,

I'm trying to understand how to wiring my hall effect on my MicroSquirt but I'm afraid to do bad thing, So...

My hall effect is a VW part, and had 3 pin: +, -, signal.
I think I should do this:
Optoin + --> hall signal
Optoin - --> hall - and grounded
vref 5v --> hall +

Is it correct ?

[24c]

Opto + & - are OK, but be careful, I think most Hall effects from VW are +12V IIRC, I doubt yours would be 5V. Have you got a part number to check against, and then Xref it in a "Google' search etc

[g-snoop]

Thanks for quick reply !
You're right, I checked it and my hall sensor is 12v !
So it should be:
Optoin + --> hall signal
Optoin - --> hall - and grounded
12v --> hall +

Also, do you think I should do the 1kohm mod (between optoin+ and 12v) ? I read some topics about troubles with vw hall sensor, that requires this mod...

[800vtwin]

If you get high rpm drop outs/tach loss, you can put a 1k resistor from either 5v reference or 12v to hall signal. (opt+). I think it depends on the output and what rpm you will see.

Is the hall effect for crank? Is it 1 trigger pulse per revolution?

[g-snoop]

It is a four window hall effect for cam. So, it's two trigger pulse per crank revolution.

[800vtwin]

Is this the signal for crank location?

Is there any other sensors or is the cam hall effect the only one?

[g-snoop]

No more sensor, the cam hall effect is the only one !

[800vtwin]

ok, just checking.

Your last hook up is right. Just try it, if you get drop out, put the 1k pull up resistor from 12v to cam signal.

[g-snoop]

Ok, thank for help 800vtwin, I appreciate