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DIY EEG (and ECG) Circuit
Your missing the 25nF in the list of capacitors bud. You have it only in the schematic.
hay first thanks a lot for the shared info ... for a project of mine i have a question before i start making the object : im trying to use the signal from the ecg or eeg as sound that can be audible using speakers analogically without using computer .. did you ever try that or do you think its possible?
I was wondering could you measure certain thoughts with this EEG module device, because I am planning to use this as a component for a project at school. Thank You !!!
Hello sir - and everybody else!First of all, thank you very much for the instructions. Since English is not my mothertongue and I never did a (electronical) project like this before I don't quite get this information:"2x Quad Op-Amp - TL084CN - Any Op-Amp will do. You need 5 single amps, this one just includes 4 in each chip."Quad Op-Amps always include only 4 single amps, right? So... will 4 be enough? And if not, what should I search for to find one with 5 single amps? Am I missing something?It would be very helpful if someone could clarify this for me.Thank you very much :)
I wonder, would it be possible to replace the AD620AN with an ADS1015 see https://www.adafruit.com/product/1083 which I read contains a 16x amplifier - the reason I am interested in this is that the ADC on this chip can sample at 3.3ksps and output via I2C, I think this would be useful for outputting to a esp8266 so that the output from the sensor can be streamed over wifi.I'm wondering about adding this functionality as cheaply as possible, hence wanting to swap the the amplifier - but it's only 16x and running at 3.3ksps for 12bits... what do you think, would it be useful on both counts of gain and sample rate & resolution? I understand that this is a lot lower than we would find in a sound-card.
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