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- Bluetooth Robot kit application tutorial (Download it)
It is the most popular of all AVR controllers as it is used in ARDUINO boards
DIR and GND pins
but from the software perspective it knows it has gone 5 detents from where it started
KY039 Finger Detection Heartbeat Measuring Sensor Module Ribbon - Bluetooth Robot kit applicationIntroduction: Finger Detection Heartbeat Measuring Sensor Module KY 039 uses bright infrared (IR) LED and a phototransistor to detect the pulse of the finger, a red LED flashes with each pulse. This component is ideally suited to adding heartbeat sensing to your project. Pulse monitor works as follows: The LED is the light side of the finger, and phototransistor on the other side of the finger, photo transistor used to obtain the flux emitted, when