MAX30102 Pulse Oximeter Module
by Maxim / GY-MAX30102
SKU: PSA-CMP-MAX30102
No reviews yetTypical India street price
₹180–₹400
PPG heart-rate / SpO2 demo — biology + photonics (not medical).
Interface: I2C
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Concept
Red + IR LEDs shine into a finger; photodiode sees blood-volume pulses.
A little theory
Beer–Lambert-ish AC/DC of two wavelengths. MAX30102 I2C 0x57. In the classroom, treat MAX30102 Pulse Oximeter Module as a intermediate part using I2C. Typical India street price is about ₹180–₹400. Always verify voltage and pin labels on your exact module — silk screens vary across clones. Start with a datasheet or trusted learn guide, power the part correctly, share GND with the MCU, and test with a simple blink/read sketch before building the full project. Measure voltages with a multimeter when something fails, and keep actuator current off the MCU regulator.
How it works in a project
SparkFun MAX3010x library; rest finger still, ignore first seconds.
Classroom & project use
- Bio lab
- Wearable demo
- Sensors classroom demo
Buying in India
Precautions
- Not for diagnosis
- Keep ESD off the window
Specifications
| Chip | MAX30102 |
| Interface | I2C |
| Category | Sensors |
| Difficulty | Intermediate |
| Voltage | 3.3–5V module |
Pinout
VCC | GND | SCL | SDA (confirm address with I2C scanner)
