The Arduino and similar boards have an LED ... and he shows us how he drives series chains of LEDs from a higher voltage using just the TI chip. Given the content of the talk this shouldn ...

Inside, an Arduino Nano is hooked up to a series of WS2812b LEDs. The LEDs are flashed in time with the heartbeat of the person holding the heart, thanks to a MAX30102 heartbeat sensor.

Since the Arduino series has an open-source hardware license ... For instance, you can combine an Arduino with LEDs, resistors, sensors, breadboards, and other circuitry components to build ...