Arkanoid spinner help

[telengard]

I'm trying to get an arkanoid spinner working, using it with an Opti-PAC.  Originally posted this in restorations but it is probably more appropriate in here.   

As received from eBay it did not work.  Found this site:

http://www.zumbrovalley.net/readpost.php?artid=1

and following the advise there I ordered some replacement optical encoders which were mentioned were most likely drop in replacements:

http://www.optekinc.com/datasheets/OPB859.pdf

I've pinned out everything to make sure I have it right and I'm pretty sure that part is OK.  What I'm seeing is the output at the receivers (pins 1 and 4) is always @ 5V.  When moving the wheel I never see it dip to 0v.

Any tips on things to check or ideas?  As I mentioned I've pinned everything out following the schematics at the above page and also verified (out of circuit) that the 2 resistors are 150ohm (in circuit the resistance goes way up which surprised me, I would have thought they'd stay fixed and current/voltage drop would change).  I also only have the 2 150 ohm resistors on my board and from what I've read, the other 2 aren't needed.

~telengard

[D_Harris]

From what I know the original Arkanoid spinner should have worked without having to use new encoders.

Did you re-flow all the solder joints first? (I think cold solder joints are a common problem).

Darren Harris
Staten Island, New York.

[telengard]

From what I know the original Arkanoid spinner should have worked without having to use new encoders.

Did you re-flow all the solder joints first? (I think cold solder joints are a common problem).

Darren Harris
Staten Island, New York.

Hi there,

Thanks for the suggestion!  I only replaced the encoders because the spinner wasn't working.  Figured the encoders were not working.  Seems that is not the case.   

I'll try re-flowing the solder joints tonight.

~telengard

[D_Harris]

From what I know the original Arkanoid spinner should have worked without having to use new encoders.

Did you re-flow all the solder joints first? (I think cold solder joints are a common problem).

Darren Harris
Staten Island, New York.

Hi there,

Thanks for the suggestion!  I only replaced the encoders because the spinner wasn't working.  Figured the encoders were not working.  Seems that is not the case.   

I'll try re-flowing the solder joints tonight.

~telengard

Well, did that correct your problem?

Darren Harris
Staten Island, New York.

[DaOld Man]

I've pinned out everything to make sure I have it right and I'm pretty sure that part is OK.  What I'm seeing is the output at the receivers (pins 1 and 4) is always @ 5V.  When moving the wheel I never see it dip to 0v.
~telengard

According to the pdf you linked to, You should see a steady 5 volts between pins 1 and 4 of the sensor.
(Between pins 1 and 2 you should see around 2 volts.)
Connect your meter to pins 1 and 3, then turn the spinner very slow. If you are using a digital volt meter and turn the spinner fast, the DVM may not see the fast pulse and register a steady on, due to DVM update times.
At least this is how it looks to me.