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EEG circuit | Schematic diagrams of brain wave project

EEG circuit Diagram

How to read an EEG

This is the complete step by step guide of Brain wave decoder project.How to read an eeg. We will cover each and every step with details and practical results.There are three main parts of the project The hardware,EEG circuit designing and the software.In the hardware section we will discuss about EEG project applications,The selection of electrodes for capturing EEG waves. The circuit designing part consists of designing filters for extracting EEG waves.The last part is about test results and real time EEG wave simulations. The brain wave controlling EEG project consists of many sub sections.The complete project will be covered in the following posts.

  1. Brain wave decoder EEG project step by step guide
  2. What is EEG and How it works
  3. What is the History of EEG waves and Neuro imaging techniques
  4. Brain computer interface BCI monitoring systems
  5. Functionality and Applications of the brain wave EEG project
  6. Material required for portable EEG system development
  7. How to select electrodes for brain wave EEG project
  8. circuit designing steps for EEG portable monitoring device
  9. How to design filters for EEG circuit
  10. Schematic diagrams of brain wave EEG project
  11. Simulation analysis of brain wave controlling EEG project
  12. Challenges and Problems in EEG brain wave controlling project
  13. Final results of brain wave decoder EEG project
  14. How to filter EEG waves on MATLAB
  15. Future research for EEG project
  16. Hardware and software list for EEG project

As the final circuit has two main parts in the signal acquisition all the signal processing has been done. The signal translation part only receives the signal and perform any task or to control any real-world application.

Related posts

What is the History of EEG waves and Neuro imaging techniques

What is the History of EEG waves and Neuro imaging techniques

August 31, 2020
Functionality and Applications of the brain wave EEG project

Functionality and Applications of the brain wave EEG project

August 31, 2020

Signal Acquisition:

The signal acquisition part starts with the signal picking from electrodes. We are using gold plated dry electrodes that picks the signal from brain from over the scalp. After electrodes the signal goes to the instrumentation amplifier that take the difference and rejects common mode and makes the signal readable by the circuit. After instrumentation AD620 the signal goes to the 60 Hz notch filter for removing line noise coming at 60 Hz. After Notch there comes the second order low pass filter to remove extra frequencies.  After 31 Hz low pass there comes the final amplification part in this part we amplify the signal and sets the final gain. After final amplification there is a clamper circuit for Arduino board to ensure that the output will be in the range of 5 volts. Then the last part after the circuit the output goes to the analog of the Arduino board that converts it into digital and sends to the wireless transmitter.

Signal Translation:

In signal translation part we receive the low noise low powered signal from transmitter and sends it to perform or control any application.

Schematic Diagrams

 Notch Filter Schematic Diagram

The Fig- shows the schematic diagram of Notch filter that we have replaced with UAF 42 IC

notch filter

nnaan

Final Amplifier Schematic

See the final amplifier and complete EEG circuit diagram on top of this post.

final amplifier

 

Everything will be cleared in step by step guide so stay connected for more tutorials and guides.If you have any query about the project feel free to comment below and Subscribe to our YouTube channel for video tutorials and project application ideas.stay happy and stay motivated.

 

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Mak

Mak

Mechatronics Engineer - Entrepreneur - Solution Architect Love writing & Traveling - Being Average isn't a Choice Stay Happy - Live in Freedom & Always have Faith on Yourself...

Related Posts

What is the History of EEG waves and Neuro imaging techniques
Brain Wave Decoder

What is the History of EEG waves and Neuro imaging techniques

August 31, 2020
Functionality and Applications of the brain wave EEG project
Brain Wave Decoder

Functionality and Applications of the brain wave EEG project

August 31, 2020
Material required for portable EEG system development
Brain Wave Decoder

Material required for portable EEG system development

August 31, 2020

Comments 2

  1. Ram Krishan says:
    2 years ago

    What are the grey+ green boxes labled xsc1 etc ?
    I’m trying to replicate this project.

    Reply
    • mak says:
      2 years ago

      These are oscilloscope signs….as this is simulation schematic…..Ignore these boxes when designing on board.

      Reply

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