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• Hi William, We have figured out that if the reference is Fp1 or Fp2, channels overhead are getting saturated. So we changed the electrode location like this: Ref - AFz Ch1 - C3 Ch2 - C4 Ch3 - Fc3 Ch4 -  Fc4 Now values start from some valu…

  in TLC272 DIY active electrodes, bias connection saturate the output value Comment by Abhay7417 December 2018
• Thanks William, In process of using all 8 channels on openbci board. I have connected 9 active electrodes(6 with spikes, 2 with non spikes, 1 for refrence at Fp2 location). Now while measuring data sometimes values are saturating for few or all chan…

  in TLC272 DIY active electrodes, bias connection saturate the output value Comment by Abhay7417 December 2018
• Thanks William,After using 3 active electrodes (2 Channels and 1 reference), saturation problem is solved.  1.  Even after exploring lot of links. I am not able to understand the role of Bias electrode. For now I am using dry electrode for Bias con…

  in TLC272 DIY active electrodes, bias connection saturate the output value Comment by Abhay7417 April 2018
• Thanks for reply william, Active dry electrode which we are using is unity gain buffer which does not amplify signal. Do you mean to say if I am using dry active electrodes I don't need bias electrode connected to right earlobe? My reference elect…

  in TLC272 DIY active electrodes, bias connection saturate the output value Comment by Abhay7417 April 2018