it's not magic. it's electrodes.
your brain produces tiny electrical signals. different patterns mean different things -- focus, calm, stress, sleep.
traditionally you'd need a lab full of equipment to read them. we fit it in an ear tip.
the ear canal is actually one of the best places on your body to pick up brain signals. neuroscientists have known this for years.
technical specs
eeg 1-channel differential (INA128, 1003x gain)
electrodes 2 dry ear-tip electrodes + active DRL ground
input buffers OPA2376 for impedance matching
codec CM108AH USB audio -- 48kHz, 16-bit
passband 1-34 Hz (alpha, theta, delta bands)
connection USB-C -- driverless, no firmware, plug & play
bom cost ~$10-11
pcb 55x35mm
processing all signal processing on your phone
the entire analog front-end costs less than lunch and fits in the inline controller you'll fidget with in your pocket.
signal chain
ear → electrode → amp → codec → usb → phone → ai
based on research from the OpenEarable ExG paper -- UbiComp '24 best paper award
want to see it in person?
no spam. just same
same -- you're in
you're #0 on the waitlist
share to move up the list
each friend who joins moves you up 1 spot