[HN Gopher] Sound Card EEG (ScEEG) Technology
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       Sound Card EEG (ScEEG) Technology
        
       Author : 1970-01-01
       Score  : 27 points
       Date   : 2023-08-28 14:00 UTC (1 days ago)
        
 (HTM) web link (www.hotamateurprograms.com)
 (TXT) w3m dump (www.hotamateurprograms.com)
        
       | londons_explore wrote:
       | This article uses modulation tricks to try to get many inputs all
       | on one audio channel.
       | 
       | However, USB sound cards, available for around a dollar[1] have a
       | nice high input impedance and can directly be connected to EEG
       | probes for direct sampling of microvolt level signals. No
       | circuitry needed!
       | 
       | You can easily connect hundreds of them to the same system and
       | get hundreds of input channels with great electrical isolation.
       | The way USB works, they also have perfectly synchronised clocking
       | too!
       | 
       | [1]: https://www.aliexpress.com/item/1005004134024654.html
        
         | 1MachineElf wrote:
         | Your link directed me to an AliExpress page with the words:
         | 
         |  _Sorry, the page you requested can not be found:(_
        
           | appleflaxen wrote:
           | Same
        
       | bckr wrote:
       | Musician interested in EEG here.
       | 
       | Is there considered a "standard EEG kit", or an oft-recommended
       | beginner's guide, course, or book?
       | 
       | Thanks!
        
         | nebben64 wrote:
         | OpenBCI is usually a good place to start for BCI DIY projects.
         | I use the Low-cost Biosensing Starter Bundle[1], it comes with
         | EEG/EMG/ECG hardware & software.
         | 
         | I have some (cringe) unboxing & assembling vids if you want to
         | see what comes in the box[2]. (Recommend watching it on 2x
         | speed till I get better at editing)
         | 
         | [1] https://shop.openbci.com/products/low-cost-biosensing-
         | starte...
         | 
         | [2] https://www.youtube.com/channel/UCiCSFuMQ0nDL02Ml5lUCVqQ
        
           | bckr wrote:
           | Thank you, will dive into this!
        
       | dave1010uk wrote:
       | Similar: https://icibici.github.io/site/
        
       | thriftwy wrote:
       | It's obvious that a sound card is the most affordable
       | oscilloscope, the obvious downside being quite limited sample
       | rate. You would expect that an oscilloscope would go into MHz.
       | But if it works for you, fine.
       | 
       | I remember an article about ball mice disassembled and used as a
       | cheap reliable rotation sensor somewhere in oil pipeline
       | industry.
        
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       (page generated 2023-08-29 23:02 UTC)