===== Devices 101 =====

Goal: //See how to operate signal acquisition devices//

==== Prepare for the lab ====

  * Take a look at the manuals:
    * {{https://krzysztof.kutt.pl/didactics/psaw/Explorer_User_Manual.pdf|biosignalsplux Explorer Manual}} -- Section 2 is the most important (our lab is equipped with 4-Channel Hubs)
    * {{https://krzysztof.kutt.pl/didactics/psaw/OpenSignals_Manual.pdf|OpenSignals Manual}} -- Sections 2 and 3.1-3.2 are the most important ones for us
    * {{https://krzysztof.kutt.pl/didactics/psaw/ECG_User_Manual.pdf|ECG Sensor User Manual}}

==== Materials ====

  - Measurement time:
    - [[https://support.pluxbiosignals.com/knowledge-base/introducing-opensignals-revolution/|Download and install the OpenSignals (r)evolution tool]] for your platform (Windows and [[https://play.google.com/store/apps/details?id=info.plux.opensignalsmobile|Android]] are preferred, because they are the most problem-free)
    - Follow the notebook **[[https://colab.research.google.com/drive/1wVdK6BjbIClcKMnFvfsH5ZY9dNwHZp4h?usp=sharing|Devices 101]]**. It will guide you through the steps of setting up and attaching sensors, until a sample signal is collected and saved to a file.
    - At the end, you save a file with about 5 minutes of your heart activity recording. **Keep it in a safe place** - you can use it during the next class on ECG signal analysis!
    - If there is still time before the end of class, you can do more experiments:
      - Check in practice how **aliasing** looks. By default, OpenSignals is set to sample at 1000 Hz. According to the {{https://krzysztof.kutt.pl/didactics/psaw/ECG_Datasheet.pdf|ECG Datasheet}}, the ECG signal is between 25-100 Hz. So try changing the sampling rate to other values, such as 300 Hz and 20 Hz to see the differences in the collected ECG signal.
      - Experiment with **other sensors**. Use the User Manuals (linked below) as a reference.
    - **At the end of class:**
      - clean the equipment with disinfectant wipes
      - throw away the disposable electrodes (or keep them as souvenirs ;-) )
      - pack all items in bags
      - make sure all items are in the case:
        * biosignalsplux hub
        * bluetooth dongle
        * 4 sensors (each has a sticker with the name on it)
        * reference electrode (single, no stickers)
        * power supply
      - give the case to the teacher

==== Learn more! ====

=== biosignalsplux ===

  * Our sensor kit: [[https://biosignalsplux.com/products/kits/explorer.html|biosignalsplux Explorer]] ({{https://krzysztof.kutt.pl/didactics/psaw/Explorer_User_Manual.pdf|User Manual}})
  * Our sensors:
    * [[https://biosignalsplux.com/products/sensors/electrocardiography.html|ECG]] -- for **heart** activity ({{https://krzysztof.kutt.pl/didactics/psaw/ECG_Datasheet.pdf|Datasheet}}, {{https://krzysztof.kutt.pl/didactics/psaw/ECG_User_Manual.pdf|User Manual}}),
    * [[https://biosignalsplux.com/products/sensors/electromyography.html|EMG]] -- for **muscle** activity ({{https://krzysztof.kutt.pl/didactics/psaw/EMG_Datasheet.pdf|Datasheet}}, {{https://krzysztof.kutt.pl/didactics/psaw/EMG_User_Manual.pdf|User Manual}}),
    * [[https://biosignalsplux.com/products/sensors/electrodermal-activity.html|EDA]] -- for **electrodermal** activity ({{https://krzysztof.kutt.pl/didactics/psaw/EDA_Datasheet.pdf|Datasheet}}, {{https://krzysztof.kutt.pl/didactics/psaw/EDA_User_Manual.pdf|User Manual}}),
    * [[https://biosignalsplux.com/products/sensors/electroencephalography.html|EEG]]  -- for **brain** activity ({{https://krzysztof.kutt.pl/didactics/psaw/EEG_Datasheet.pdf|Datasheet}}, {{https://krzysztof.kutt.pl/didactics/psaw/EEG_User_Manual.pdf|User Manual}}),
    * and [[https://biosignalsplux.com/products/sensors/electrooculography.html|EOG]] -- for **eye** activity ({{https://krzysztof.kutt.pl/didactics/psaw/EOG_Datasheet.pdf|Datasheet}}, {{https://krzysztof.kutt.pl/didactics/psaw/EOG_User_Manual.pdf|User Manual}})
  * [[https://biosignalsplux.com/products/sensors.html|List of all available sensors]]
  * [[https://support.pluxbiosignals.com/knowledge-base/introducing-opensignals-revolution/|OpenSignals]] -- software for data visualisation and recording ({{https://krzysztof.kutt.pl/didactics/psaw/OpenSignals_Manual.pdf|UserManual}})
  * [[https://github.com/biosignalsplux|Programming APIs]] for Python, C++, Android, Unity and more
  * [[https://github.com/biosignalsplux/biosignalsnotebooks|Jupyter Notebooks]] in Python (lab materials are based on them)