Description:
- Module Input voltage 5V-3.3V
- module output: AO output is an analog signalthe oscilloscope can see the connection all the
way to deal with the case microcontroller AD analog signal acquisition mouthheart rate data
can be collected
DO output pulse signalhigh and low
3 Output amplitude: the output can be adjusted to achieve the general
Third to the magnitude of VCC
Modules use 0805 resistors and capacitorsand this module provides schematics
This version of the heart rate sensor module uses a finger clip to get a fingertip heart rate
datasensor sampling principle is not visible through the launch tube high transmittance IR
infrared irradiation fingertips across the infrared emission is the corresponding infrared
receiver . Different time heartbeatblood capillaries in the fingertip is not the samethe
infrared light transmitting through the finger tubethrough the infrared receiver receives the
amplified signal according to the infrared light through the finger determine the heart rate.