







The HMD-344 HL8038 Heart Rate Monitor Sensor Module is a compact biometric sensing module designed to measure pulse and ECG-related signals for microcontroller-based projects. Utilizing the HL8038 chipset, the module amplifies and conditions incoming pulse signals from a compatible biometric sensor connected through a 3.5mm input jack. It provides a processed signal suitable for heart rate monitoring applications, wearable devices, health monitoring systems, and educational projects. Operating from 3.3V to 5V, the module features low power consumption of only 800µA, making it ideal for battery-powered systems requiring reliable and efficient pulse detection.
يعد HMD-344 HL8038 Heart Rate Monitor Sensor Module وحدة استشعار حيوية مدمجة مصممة لقياس معدل نبضات القلب والإشارات الحيوية المشابهة لتخطيط القلب ECG في مشاريع المتحكمات الدقيقة. يعتمد على شريحة HL8038 التي تقوم بتضخيم ومعالجة إشارات النبض القادمة من المستشعر الحيوي المتصل عبر منفذ 3.5 مم. توفر الوحدة خرجًا رقميًا مناسبًا لتطبيقات مراقبة نبض القلب والأجهزة القابلة للارتداء والأنظمة الصحية التعليمية. تعمل بجهد يتراوح بين 3.3 فولت و5 فولت مع استهلاك طاقة منخفض يبلغ 800 ميكروأمبير فقط، مما يجعلها مناسبة للمشاريع المحمولة والمعتمدة على البطاريات.
The HMD-344 HL8038 Heart Rate Monitor Pulse ECG Sensor Module is a biometric signal conditioning module designed for pulse rate monitoring and physiological signal processing applications. The module accepts signals from a compatible pulse or ECG sensor through its integrated 3.5mm biometric connector.
At the core of the module is the HL8038 integrated circuit, which amplifies and filters incoming biometric signals, providing a clean output suitable for direct connection to microcontrollers such as Arduino, ESP32, STM32, Raspberry Pi Pico, and other embedded platforms.
Heart rate measurement is typically performed by monitoring the falling edge of the output signal and calculating the time interval between successive pulses. The measured interval can then be used to calculate beats per minute (BPM), making the module ideal for health monitoring, educational experiments, wearable electronics, and biomedical research projects.
The module operates from a supply voltage of 3.3V to 5V, consumes only 800µA, and includes mounting holes for easy installation into electronic projects and prototype systems.
| Parameter | Specification |
|---|---|
| Model | HMD-344 |
| Chipset | HL8038 |
| Module Type | Heart Rate / Pulse ECG Monitor Sensor Module |
| Operating Voltage | 3.3V – 5V DC |
| Output Type | Digital Output |
| Current Consumption | 800µA |
| Connector Type | 3.5mm Biometrics Connector |
| Pin Pitch | 2.54mm |
| Mounting Hole Size | M3 |
| Mounting Hole Spacing | 43mm × 25mm |
| Operating Temperature | 0°C to 60°C (Unconfirmed) |