Which Hall sensor for Hit hat?

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Re: Which Hall sensor for Hit hat?

Postby Maylord.war » Fri May 07, 2010 2:03 am

:lol:
thanks!
I have two hold hard drisk but not are the same model and brands. If i get the magnet cause any problem? For this sensor are required two or more magnet for a corret use?

Thanks
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Re: Which Hall sensor for Hit hat?

Postby JLantz » Fri May 07, 2010 2:45 am

No problem at all, Maylord. You will only need to take the magnets from one of them, anyway; each hard drive will have two magnets.

I had this working with only one magnet broken in half. It will depend on how far away the magnet is from the HES wether you need to use more. Your best bet is to experiment with what you have and what location is best to mount the components based on the pedal you have.
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Re: Which Hall sensor for Hit hat?

Postby Ken Forgettable » Fri May 07, 2010 2:49 am

I think I use the 1321 device but suggest you bias the Hall device to 0V by placing a stationary
north or south pole behind it.

See P.28 of http://www.allegromicro.com/en/Products/Design/hall-effect-sensor-ic-applications-guide/AN27701.pdf
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Re: Which Hall sensor for Hit hat?

Postby ignotus » Fri May 07, 2010 4:54 pm

Ken:

What would be the purpose of doing that? My knowledge of electronics is very basic, and I'd be interested to know
If it ain't broken... fix it until it is.
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Re: Which Hall sensor for Hit hat?

Postby Ken Forgettable » Fri May 07, 2010 6:50 pm

If your device works like mine, which I think it does then the output signal only goes to 2.5V (Vcc/2). by biasing you can get a full 0 to 5V output swing.
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Re: Which Hall sensor for Hit hat?

Postby JLantz » Sat May 08, 2010 5:55 am

Can someone post a screenshot from the Allegro page, FIG. 47? I can't right now, but think it will help the discussion and evolution.

This is an exciting addition that may make the HES solution even better. Thanks for taking the time to read the document, Ken.
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Re: Which Hall sensor for Hit hat?

Postby JLantz » Sat May 08, 2010 6:15 am

And Ken,

I would like to see some pics of your setup.

I can see the advantage of the increased range with mounting solutions, but is this it? How has this improved your HH pedal response with MD?
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Re: Which Hall sensor for Hit hat?

Postby ignotus » Sat May 08, 2010 6:08 pm

JLantz wrote:Can someone post a screenshot from the Allegro page, FIG. 47?

Here goes:
fig.47.png
You do not have the required permissions to view the files attached to this post.
If it ain't broken... fix it until it is.
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Re: Which Hall sensor for Hit hat?

Postby Ken Forgettable » Sat May 08, 2010 7:48 pm

JLantz wrote:I would like to see some pics of your setup.
:shock: I'm not at all sure if my setup is suitable in this forum:

Anyway: I use the 1321 which is more sensitive to magnetic flux than the 1302 also, I use Hall effect in preference to PZT for my drums too.
With dual biasing (where the magnets are pushing apart) you get full dynamic range without hot pads *and* you can control head damping ^_^.
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Re: Which Hall sensor for Hit hat?

Postby JLantz » Sun May 09, 2010 5:03 am

You're using HES for your pads too?!

Details?
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