> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Gravity: MAX30102 PPG Heart Rate and Oximeter Sensor (I2C/UART)

**Type:** Product page · **SKU:** SEN0518 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/gravity-max30102-ppg-heart-rate-and-oximeter-sensor-i2cuart.html ([markdown](https://core-electronics.com.au/gravity-max30102-ppg-heart-rate-and-oximeter-sensor-i2cuart.html.md))

DFRobot Gravity: MAX30102 heart rate and blood oxygen sensor module integrates the Maxim MAX30102 chip and an MCU heart rate and blood oxygen algorithm...

## Pricing

- **Price:** $38.10 (inc GST) — $34.64 AUD, exc GST
- **Quantity discounts:** 6+ $32.91 (exc GST) · 12+ $31.52 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Sep 01 and Sep 07.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN0518:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/SEN0518:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

DFRobot Gravity: MAX30102 heart rate and blood oxygen sensor module integrates the Maxim MAX30102 chip and an MCU with heart rate and blood oxygen algorithm.

The MAX30102 uses PPG(PhotoPlethysmoGraphy) to measure data, which will be converted into heart rate and oximetry values when processed by the MCU, then output through I2C or UART, making the sensor easy to useand greatly reducing resource occupation of the main controller. Meanwhile, the corresponding upper computer is provided to allow you to conveniently read data by a PC.

**Note:**

4. The pressure may change when the finger is directly pressed down the sensor, which will affect the data output. So please try to fix the sensor on your finger.
5. Wear the sensor on your finger and there is no difference in the direction of wearing.
6. This product is not a professional medical instrument and should not be used as an auxiliary accessory in diagnosis and treatment
**![Gravity: MAX30102 Heart Rate and Oximeter Sensor](https://core-electronics.com.au/attachments/localcontent/1_27932208575.png)**

**Wear Instructions**

**![Gravity: MAX30102 Heart Rate and Oximeter Sensor](https://core-electronics.com.au/attachments/localcontent/Connection-Diagram-w-Arduino_89868c6f5bf.png)**

**Connect with DFRduino UNO R3**

**![Gravity: MAX30102 Heart Rate and Oximeter Sensor](https://core-electronics.com.au/attachments/localcontent/Connection-Diagram-w-Raspberry_7406054378c.png)**

**Connect with Raspberry Pi**

###  Features

14. Microcontroller with algorithm integrated
15. Data can be read directly through the host computer
###  Applications

17. Heart rate blood oxygen project
18. Home heart rate oximeter
19. Long-term heart rate and blood oxygen monitoring project
###  Specification

21. Power Supply Voltage: 3.3V/5V
22. Working Current: <15mA
23. Communication Method: I2C/UART
24. I2C Address: 0x57
25. Serial Port Baud Rate: 9600
26. Operating Temperature Range: -40?~85?
27. Product Size: 25.5×32mm/0.98×1.26inch
###  Documents

29. [Product wiki](https://wiki.dfrobot.com/SKU_SEN0518_Gravity_MAX30102_Heart_Rate_and_Oximeter_Sensor)
30. [Schematics](https://core-electronics.com.au/attachments/localcontent/d855e592d0fa258cb345ba00ef8ed1c3_23187cd5548.pdf)
31. [Dimension](https://core-electronics.com.au/attachments/localcontent/bb9c1438d3652f1500cf8b01f058db3c_270560418ed.pdf)
32. [MAX30102 Datasheet](https://core-electronics.com.au/attachments/localcontent/6c483e7b05a098774e4dfd4e05c6e6f8_9173089c742.pdf)
###  Parts List

34. Gravity: MAX30102 Heart Rate and Oximeter Sensor x1
35. Gravity-4P I2C/UART Sensor Connector x1
36. Strap x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/S/E/SEN0518-1.jpg)