←back to thread

Eurorack Knob Idea

(mitxela.com)
311 points po | 2 comments | 25 Apr 25 13:19 UTC | HN request time: 0.001s | source
Show context
diggan ◴[25 Apr 25 14:04 UTC] No.43793686[source]▶
Interesting idea for sure, but how is the feel of actually turning the knob? Seems to offer short to no resistance, which would make fast but precise movements pretty hard, something that is important for things like performances.

What would be a huge bonus point (but maybe unrealistic? I don't quite understand how the current implementation actually works) would be software-configurable resistance (physical, not electrical). I've spent a lot of time for my DIY modules to find the right knobs, or the right process to adjust the resistance of my existing knobs, being able to control that digitally could introduce a whole new level of fun.

replies(2): >>43793815 #>>43798268 #
scottapotamas ◴[25 Apr 25 14:16 UTC] No.43793815[source]▶
You might enjoy https://github.com/scottbez1/smartknob

The complexity of this approach (ignoring the display and flair) unfortunately means you won’t see this used too often due to cost.

replies(4): >>43793879 #>>43794088 #>>43794111 #>>43806272 #
1. adolph ◴[25 Apr 25 14:40 UTC] No.43794088[source]▶
A differently complex and smaller approach might be to combine the knob with with an axial flux PCB-BLDC, like what Carl Bugeja made [0, 1]. It might be suited to get haptics in something as small as the article's knob, although to get an in-built display you'd have to use one of those displays that fit in lego bricks [2, 3] with a slip-ring.

0. https://microbots.io/products/motorcell

1. https://www.youtube.com/watch?v=CVszJMlvZcA

2. https://github.com/AncientJames/uGrey

3. https://www.youtube.com/watch?v=0pUV_3qeHog

replies(1): >>43794248 #
2. diggan ◴[25 Apr 25 14:57 UTC] No.43794248[source]▶
Many thanks for the links/references. I don't really care about the display itself (probably prefer without it actually), but never saw those other links before, interesting stuff.