Build Your Own Arcade Controls Forum
Main => Main Forum => Topic started by: telengard on June 14, 2011, 10:38:16 pm
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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. :angel:
As received from eBay it did not work. Found this site:
http://www.zumbrovalley.net/readpost.php?artid=1 (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 (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
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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.
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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. :banghead:
I'll try re-flowing the solder joints tonight.
~telengard
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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. :banghead:
I'll try re-flowing the solder joints tonight.
~telengard
Well, did that correct your problem?
Darren Harris
Staten Island, New York.
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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.