[sdiy] Incremental encoder to up / down counter or pots and an ADC

[sleepy_dog at gmx.de]

ah, I meant to use the word detent, not "indent"

Am 29.11.2016 um 23:39 schrieb sleepy_dog at gmx.de:
>
> I bought a bunch of those some years ago. In the way they came, they 
> had a really hard indent, felt almost unpleasant.
> I did not use them then, then checked them a few years after having 
> them laying around - for some funny reason, the indent is completely 
> gone. (some sort of chemical material decay?)  But also, one of the 
> outputs has now a garbage signal, so the encoder does not work 
> anymore. Used to work perfectly when new.
> This is the case with all >20 pcs I bought.
> I sourced them elsewhere than sparkfun, but I just looked at the 
> datasheet that sparkfun linked, it's the same I have here still as 
> printout.
> I asked sparkfun abuot this quite a while, they claim the thing is not 
> supposed to have indent.
> Heh. Quite strange that is. My workplace ordered quite a bunch from 
> some korean seller who deals in bigger numbers more  even longer ago, 
> they also had the harsh indent and were supposed to be indented, so 
> not sure what sparkfun is telling.
>
> I bought mine from some rather small time seller on ebay. Maybe those 
> were just dodgy, I don't know.
> But perhaps don't buy 100 of them and plan to use them in gear that's 
> to last long ;-)
>
> Steve
>
>
> Am 29.11.2016 um 23:09 schrieb Vladimir Pantelic:
>> https://www.sparkfun.com/products/10982
>>
>> but please dont buy them all, I need them for my modules :)
>>
>>
>> On 29.11.2016 22:55, Tom Wiltshire wrote:
>>> So I take it we can't find these illuminated incremental encoders 
>>> anywhere in a
>>> version with threaded shafts and have to add our own threaded shaft 
>>> after the
>>> fact? (since that is essentially what these are).
>>>
>>> Really? Not available threaded? Nowhere?!
>>>
>>> (It may be that not - that's why I'm asking. If I knew somewhere, 
>>> I'd tell you.)
>>>
>>> Tom
>>>
>>> On 29 Nov 2016, at 20:20, "Matthias Herrmann" 
>>> <matthias.herrmann at fonik.de
>>> <mailto:matthias.herrmann at fonik.de>> wrote:
>>>
>>>> Anybody used axle bushings like these? they should keep some stress 
>>>> from the
>>>> encoder:
>>>> http://www.reichelt.de/Potiknoepfe/P6-SCREW-ACHSE/3/index.html?ACTION=3&LA=2&ARTICLE=42129&GROUPID=3139&artnr=P6+SCREW+ACHSE&SEARCH=%252A 
>>>>
>>>>
>>>>
>>>> *Von:* Synth-diy [mailto:synth-diy-bounces at synth-diy.org
>>>> <mailto:diy-bounces at synth-diy.org>] *Im Auftrag von *Jean-Pierre 
>>>> Desrochers
>>>> *Gesendet:* Dienstag, 29. November 2016 21:00
>>>> *An:* Tom Wiltshire
>>>> *Cc:* synth-diy at synth-diy.org <mailto:synth-diy at synth-diy.org>
>>>> *Betreff:* Re: [sdiy] Incremental encoder to up / down counter or 
>>>> pots and an ADC
>>>>
>>>>
>>>> Hi Tom,
>>>>
>>>> > A non-threaded shaft is never going to be tight in the first 
>>>> place, is it?
>>>> > _As long as the hole that that the encoder goes through is a nice 
>>>> tight fit_..
>>>>
>>>>
>>>>
>>>> That's exactly the problem with MANY cheapo mixers that have too 
>>>> large holes
>>>> for the pot's shaft and these shafts are rocked in all the way
>>>> with no secure mecanical provision.. Even with a brand new console
>>>> you can 'feel' the loose the shafts have in their non supporting 
>>>> holes.
>>>> Sometimes companies like Fender (to name one) use small plastic
>>>> washers to fill the holes circular gaps for tightening the shafts 
>>>> in place.
>>>> These pots or encoders are too often used with too much of their shaft
>>>> going outside the metal front panel causing the premature mecanical
>>>> degradation. Try to imagine.. when you need to pull their knobs for 
>>>> repair
>>>> you fear of ripping these shaft out of the device..
>>>>
>>>>
>>>> JP
>>>>
>>>>
>>>>
>>>> Le 2016-11-29 14:09, Tom Wiltshire a écrit :
>>>>
>>>>     +1 agree. This is a classic microcontroller job.
>>>>
>>>>
>>>>
>>>>     JP, what do you mean that these non-threaded shafts "get loose 
>>>> over time"? A non-threaded shaft is never going to be tight in the 
>>>> first place, is it? As long as the hole that that the encoder goes 
>>>> through is a nice tight fit, I don't see a particular problem 
>>>> (assuming the PCB is well supported). So what am I missing?
>>>>
>>>>
>>>>
>>>>     Thanks,
>>>>
>>>>     Tom
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
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