The Heart Beat Pulse Sensor Module detects heartbeats by shining an LED (light-emitting diode) onto the fingertip and reading light reflection changes with a photodetector (a light-sensitive component). Each heartbeat changes blood volume under the skin, which changes how much light reflects back — this is called PPG (photoplethysmography). The pulse sensor outputs an analog voltage waveform that peaks with every beat, and runs on 3.3V to 5V. Its 15mm circular PCB diameter fits over a fingertip naturally.
The heartbeat sensor price sits low because the design is simple — but that simplicity has a trade-off. The analog output is sensitive to motion. Any finger movement during reading creates noise that looks like a false heartbeat. The sensor works well when the finger stays still. A software filter or moving average smooths most of this in code.
The heartbeat sensor module works with Arduino IDE using the PulseSensor Playground library, which handles BPM calculation automatically. Engineer building health monitors, and makers testing wearables all use it. Connect S pin to an analog input, power from 3.3V, and open serial plotter in Arduino IDE to see the waveform live. StemVolt provide this module with fast dispatch across India.
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Features:
- Pulse sensor type PPG design detects blood volume changes through fingertip skin using reflected LED light.
- Operating voltage of 3.3V to 5V makes the module compatible with all standard microcontroller boards.
- PCB thickness of 1.5mm keeps the sensor board light enough for wearable prototype builds.
- heart sensor analog output delivers a real-time voltage waveform for direct ADC reading on any microcontroller.
Technical specifications:
| Specification | Details |
|---|---|
| Sensor Type | Pulse sensor |
| Operating Voltage | ~3.3V – 5V |
| PCB Diameter (mm) | 15mm |
| PCB Thickness (mm) | 1.5mm |
Applications:
- Fitness tracker project uses this sensor to count heartbeats and display BPM on an OLED screen.
- Heart Beat Pulse Sensor Module measures resting BPM before and after exercise for a health comparison project.
- Biomedical signal processing project reads the analog waveform and applies a digital filter to extract clean BPM data.
- heart rate pulse sensor module for arduino logs pulse readings every 10 seconds and saves them to an SD card.
Package includes:
- 1 x Heart Beat Pulse Sensor Module
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