{"title":"Gravity: MAX30102 Heart Rate and Oximeter Sensor","handle":"gravity-max30102-heart-rate-and-oximeter-sensor","url":"/products/gravity-max30102-heart-rate-and-oximeter-sensor","description":"The DFRobot Gravity MAX30102 sensor module measures heart rate and blood oxygen saturation (SpO2) using photoplethysmography (PPG). It integrates the Maxim MAX30102 chip with an on-board MCU that processes raw PPG data and outputs heart rate and SpO2 values directly via I2C or UART, reducing processing load on the main controller.\n\nThe Gravity interface makes it easy to connect to Arduino, Raspberry Pi, and other microcontroller boards. A companion PC application is also available for reading data directly on a computer.\n\n\nWarning: This product is not a professional medical instrument and should not be used as an accessory for diagnosis or treatment.\n\n\n\nTip: Secure the sensor to your finger with the included strap rather than pressing it directly. Pressing down can affect readings due to pressure changes. The sensor can be worn in any direction.\n\n\nKey Features\n\n\nOn-Board Algorithm MCU – Processes PPG data internally and outputs heart rate and SpO2 values directly\n\nDual Interface – I2C (address 0x57) and UART (9600 baud) output\n\nGravity Connector – Plug-and-play with DFRobot Gravity ecosystem\n\nLow Power – Less than 15 mA working current\n\nWide Voltage – 3.3 V and 5 V compatible\n\n\nSpecifications\n\n\nSensor Chip: Maxim MAX30102\n\nPower Supply: 3.3 V / 5 V\n\nWorking Current: <15 mA\n\nCommunication: I2C (address 0x57) / UART (9600 baud)\n\nOperating Temperature: −40 to 85 °C\n\nDimensions: 25.5 × 32 mm\n\n\nIdeal For\n\nHeart rate and SpO2 monitoring projects\nWearable health sensor prototyping\nLong-term heart rate and blood oxygen logging\n\n\nPackage Contents\n\n1× Gravity MAX30102 Heart Rate and Oximeter Sensor\n1× Gravity 4-pin I2C/UART sensor connector\n1× Finger strap\n\n\nResources\n\nProduct Wiki\nSchematic\nDimension Drawing\nMAX30102 Datasheet\n","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":2389,"title":"Default Title","sku":"DF-SEN0518","price":37.05,"on_sale":false,"in_stock":true,"available_quantity":650,"option1":"Default Title"}]}