Hw-597 Driver Now

| Pin | Name | Description | |------|------|-------------| | 1 | IN1 | Control signal for Relay 1 (Active LOW) | | 2 | IN2 | Control signal for Relay 2 (Active LOW) | | 3 | VCC | Power supply (5V typical, 3.3V may work but is less reliable) | | 4 | GND | Common ground with microcontroller |

#include <Wire.h>
#include <MAX30100.h>
MAX30100 sensor;
void setup() 
Serial.begin(9600);
Wire.begin();
if (!sensor.begin()) 
Serial.println("HW-597 not found. Check wiring.");
while(1);
Serial.println("Sensor ready");
 hw-597 driver
void loop() 
sensor.update();
float hr = sensor.getHeartRate();
float spo2 = sensor.getSpO2();
Serial.print("HR: "); Serial.print(hr);
Serial.print(" bpm, SpO2: "); Serial.println(spo2);
delay(1000);

The HW-597 itself does not require a separate driver – it’s a sensor, not a USB device. Instead, you need the library for its main IC.

Most HW-597 boards use the MAX30100 or MAX30102 chip. Install one of these Arduino libraries: | Pin | Name | Description | |------|------|-------------|

No special driver needed – enable I2C and use Python.