mausan 10pcs heartbeat sensor detector module ky-039 finger measurement 5 V Arduino new
1. This project consists of a bright infrared (IR) LED and photodiode detects the pulse of the finger, the red LED flashes and pulses.
2. The pulse monitor works as follows: When the LED is the finger on the light side, the photodiode on the other side of the finger, the photodiode of the blood pressure pulse has been subtly changed to the finger.
3. We r1 their very high resistor resistor, this is not enough to distinguish photodiode if most lights absorb through and fingers absorb through, you can achieve the best results by experimenting resistors.
4. Most importantly, the extra photodiode is to keep the shielded, the faint heartbeat is especially important for home lighting at home, which is mainly due to 50 Hz or 60 Hz fluctuations of the base.
Package Includes:
10 x Heartbeat Sensor Detector Module ky-039