The BPM Vision doesn't actually work with Withings' Cardio Check-Up—you need an ECG-enabled Withings tracker, like the ...
No one has had a Synchron brain-computer interface longer than Rodney Gorham. He's still finding new ways to use it.
Using a single GPIO port on a microcontroller to control N bits of arbitrary parallel binary outputs, e.g., a multi-digital display.