KE4058 Keyes DIY Electronic Brick MAX30102 Heart Rate Sensor

**KE4058 Keyes DIY Electronic Brick MAX30102 Heart Rate Sensor**

**1. Introduction**
The Keyes 2021 New DIY Electronic Brick MAX30102 Heart Rate Sensor module is a high-precision biometric detection sensor specifically designed for real-time monitoring of heart rate and blood oxygen saturation. It is widely applicable in health monitoring, fitness tracking, and medical equipment fields.

**2. Features**
- **Eco-Friendly Material:** Constructed with black eco-friendly materials compliant with modern safety standards.
- **Multi-Function Measurement:** Capable of simultaneously measuring heart rate and blood oxygen levels, providing accurate health data.
- **I2C Interface:** Facilitates easy connection with various microcontrollers through the I2C interface.
- **Wide Compatibility:** Compatible with multiple controllers including Arduino and Raspberry Pi for convenient integration.
- **Ease of Use:** Intuitive module design with simple wiring, suitable for developers of all levels.

**3. Specifications**
| Parameter | Description |
|-------------------|--------------------------------------|
| Model | KE4058 |
| Sensor Type | MAX30102 Heart Rate Sensor |
| Cable Length | 200mm |
| Operating Voltage | DC 3.3V to 5V |
| Interface Type | I2C |
| Power Consumption | Approx. 50mA (at 5V operation) |

**4. Working Principle**
The MAX30102 sensor utilizes photoplethysmography (PPG) to measure heart rate and blood oxygen saturation. The working principle is as follows:
- **Power Connection:** Connects to power supply via VCC and GND, supporting DC 3.3V to 5V operation.
- **Signal Output:** Transmits real-time data through the I2C interface for easy reading and processing.

**5. Pin Description**
| Pin Name | Description |
|----------|-----------------------------------------------|
| VCC | Positive power supply (DC 3.3V to 5V) |
| GND | Negative power supply connection |
| SDA | Data line for I2C communication |
| SCL | Clock line for I2C communication |