[HN Gopher] SmartKnob - Haptic input knob with software-defined ...
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       SmartKnob - Haptic input knob with software-defined endstops and
       virtual detents
        
       Author : e3a8
       Score  : 47 points
       Date   : 2023-09-09 18:30 UTC (4 hours ago)
        
 (HTM) web link (github.com)
 (TXT) w3m dump (github.com)
        
       | heliostatic wrote:
       | This is great! I've been thinking about building something
       | similar for sleep training with my toddler--need something that
       | works in a dark room by feel and has variable intervals. Love it.
        
       | seabass-labrax wrote:
       | I absolutely love that this is open source hardware; there have
       | been multiple circuits available on the web for this kind of
       | peripheral, but nothing even approaching the level of polish that
       | this has.
       | 
       | If the designer happens to be here, I have a question regarding
       | the circuit. Is there any protection against voltage produced by
       | a user's rotation of the knob? The TMC6300 IC that the schematic
       | shows is directly connected to the BDCM without any intermediate
       | circuitry, but the only 'protections' listed in its datasheet are
       | related to failures related to the motor being used as a motor,
       | not as a generator.
        
       | riffic wrote:
       | there was a microsoft surface dial, not sure if that ever took
       | off or not. I thought there was another product that had this
       | form factor
        
       | croes wrote:
       | I definitely need a use case for that
        
       | _Microft wrote:
       | Past submission from 2022 with a dozen comments:
       | 
       | https://news.ycombinator.com/item?id=30646371
        
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       (page generated 2023-09-09 23:00 UTC)