[sdiy] Question how to improve rotary encoder feel

[Quincas Moreira]

The Behringer BCR2000 has the LED rings and the encoders feel very nice
too. I use it to control my Alpha Juno and it feels pretty much like an
analog pot

On Fri, Jun 9, 2017 at 6:26 AM, Julian Schmidt <elfenjunge at gmx.net> wrote:

> I found 2 pics of the ION parts
> http://studiorepair.com/gallery/Alesis/Ion/slides/Alesis_
> Ion_Potentiometer__STUDIOREPAIR_04032501_1510157530.JPG
> http://studiorepair.com/gallery/Alesis/Ion/slides/Alesis_
> Ion_Panel_PCB__STUDIOREPAIR_04032501_1510087626.JPG
>
> julian
>
>
> Am 09.06.2017 um 13:17 schrieb Julian Schmidt:
>
>> I'm all ears if you know a part number or source for affordable endless
>> pots.
>> All I can find are expensive industrial ones in the >10€/piece range and
>> although being 360° endless rotation parts, the resistive taper spans only
>> 340°
>> The Ion pots look more like the normal, cheap 1-2€ pots but my research
>> turned nothing up, yet.
>>
>> julian
>>
>> Am 09.06.2017 um 12:53 schrieb rburnett at richieburnett.co.uk:
>>
>>> You could look at using continuous rotation pots like the Alesis Ion
>>> supposedly uses.
>>>
>>> -Richie,
>>>
>>>
>>>
>>> On 2017-06-09 11:30, Julian Schmidt wrote:
>>>
>>>> Hello All,
>>>>
>>>> I have a current idea that could vastly benefit from using encoders
>>>> instead of pots.
>>>> My only gripe is that I never had an encoder where I liked the feel.
>>>> With the standard 24PPR encoders you have to make way too many turns
>>>> to get to a higher value.
>>>> Rotationspeed based value speedups made the feeling even worse on the
>>>> machines I tried. Also a lot of people complain about encoders on
>>>> synths for the same reason.
>>>> Best solution so far is something like on the midibox or AN1X where
>>>> you push the encoder for fine resolution.
>>>>
>>>> The only one people seem to like are the Nord ones with the LED rings.
>>>> I never had a nord machine in my hands, but Forum research suggests
>>>> that they somehow managed to line up the LED movement on the ring with
>>>> the encoder travel. So if you turn the encoder half a rotation, the
>>>> value LED is at half, too.
>>>>
>>>> Any idea how they've done this? looking up the specs it seems like
>>>> they are using Bourns ECW1D-C24-SE0049L encoders
>>>> (http://electro-music.com/forum/topic-50251.html).
>>>> 49L is not specified in the datasheet, but my guess would be 48L =>
>>>> 48PPR which would still be too little resolution to even bring a 7 bit
>>>> value up to full range in one revolution.
>>>> Is the front panel resolution just reduced and interpolated on the
>>>> nords?
>>>>
>>>> So if anybody has some hints how to give an encoder a more
>>>> potentiometer like feeling I'm all ears. Especially if we talk 12 bit
>>>> instead of 7 bit parameter resolution.
>>>>
>>>> For practical reasons encoders would be great for layered UIs to share
>>>> a set of controls between multiple LFOs or preset saving. LED rings
>>>> are sexy as hell, too. But whenever I use encoders for something other
>>>> than menu diving and editing settings I wish for a pot in my hands ;)
>>>>
>>>> Cheers,
>>>> Julian
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>>>
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-- 
Quincas Moreira
Test Pilot at VBrazil Modular
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