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- Bluetooth Robot kit application tutorial (Download it)
433MHz operation
Based on RC522 chip which is a highly integrated reader/writer IC for contactless communication at 13
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
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