Can I capture the data from a device it's way to the display, after it has been delt with by the circuitry? Answered
I am looking to hack a complex device, so let's start with something simple...I want to take a pulse oximeter that measures blood oxygen levels and pulse rate, and use this data with my arduino. Is it possible to capture the data from the pins going to the display and use that? Any help would be appreciated, I don't even know where to start, except testing for voltage on pins and frying things.