[sdiy] akai encoder

[mark verbos]

In case anyone cares. I bought the Alpha encoder that looked like the 
right size and it arrived today. I installed it and the problem is gone. 
Now, we'll see for how long it is really fixed....


Mark



Heitor Alves wrote:

>i've found in the mouser catalog
>(http://www.mouser.com/catalog/621/1602.pdf) the encoders, but i didnt
>check for the measures of pin's.
>check it and good luck! :o)
>
>heitor
>
>On Apr 10, 2005 11:26 PM, mark verbos <mverbos at earthlink.net> wrote:
>  
>
>>But the one in question here has  a 5 mm between the pins, 10mm accross all
>>three. That seems to be double the standard size. Meaning only the Alpha
>>ENC160 will fit... no? I would hate to have to build a new switch board to
>>hold a better encoder, but I will ;) It is a single sided board, smaller
>>than a eurocard.
>>
>>Mark
>>
>>
>>
>>
>>Byron G. Jacquot wrote:
>>
>>I have an Akai S5000 with an encoder problem. When I turn it to the
>>    
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>right,
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>>sometimes everything is fine, sometimes the value goes down. I
>>    
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>took out the
>  
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>>21 screws and touched up the solder, but that didn't
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>help. I'm thinking I'll
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>>replace this thing, am I right to assume this
>>    
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>is the Alpha brand encoder
>  
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>>(318-ENC160-24P) in the Mouser catalog?
>>    
>>
>
>anyone ever have this problem?
> 
>  
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>>I've seen this problem a few times, in several different.
>>    
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>
>It's usually due
>  
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>>to a defect in the encoder design. If the encoder 
>>    
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>output transistions and
>  
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>>the mechanical detents all happen at the same 
>>    
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>point, then as the detent
>  
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>>mechanism wears out, it's messes up the 
>>    
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>transitions on the output. I think
>  
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>>the detents were becoming 
>>    
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>slightly wider, making it so that the tactile
>  
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>>"click" of the encoder 
>>    
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>didn't relate the the output edges. 
>
>It reaches a
>  
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>>point that whichever direction it's turned, the output 
>>    
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>value only seems to
>  
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>>go one direction...like a ratcheting mechanism.
>>    
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>
>I saw this happen to some
>  
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>>cheap-o encoders in a matter of weeks.
>>    
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>
>The solution was to replace the
>  
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>>cheap encoders with more expensive 
>>    
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>ones, where the detents are halfway in
>  
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>>between the output state 
>>    
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>changes. I think we wound up using Alps
>  
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>>encoders.
>>    
>>
>
>Byron Jacquot
>
> 
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