The build combines an EmotiBit sensor platform with an Adafruit Feather and accompanying Charlieplexed LED module. The EmotiBit packs a PPG, or photoplethysmogram sensor, otherwise known as a ...

The CT ELLN51.14 chip LED has a 20 percent increase in brightness compared to its predecessor model and enables more efficient photoplethysmography (PPG) with even more compact ... our expertise in ...