Hello, I am not sure what is meant by two ADCs. So from my understanding it is a continuous signal so if the person is looking straight ahead then on the oscilloscope you don't see any spike because there is no horizontal eye movement detected. Then, when you look to the left , the left lead detects the eye movement and registers it on the oscilloscope as a positive peak in the image provided and then if someone moves their eye to right then a negative peak. So because two different voltage changes are detected at different times that was my reasoning behind connecting one lead to one analog pin and then another lead to another analog pin. So the circuit itself works in detecting left and right eye movement but I'm not sure how to connect this to the arduino microcontroller. So then if I can't directly connect it into two analog pins then what is another alternative?
Well the idea behind this project was to provide it as a means of communication for bedridden patients where eye movement may be the only option available to use to communicate. Yes, I agree there are still flaws/difficulties for letters that require continuous dots or dashes and then with the spacing. One thought was to allow an elapsed time go by until the next character is registered. I personally haven't done a lot of research except for the experience I have learned in a class this year to work with biosignals like ECG,EMG, and EOG but this is the first time using the signal to actually do something with it and not just monitor.