This Wireling lets you measure your heartbeat via the MAX30101 pulse sensor. The sensor package features internal LEDs, photodetectors, optical elements, and low-noise electronics.


MAX30101 Specs

  • Heart-Rate Monitor and Pulse Oximeter Sensor in LED Reflective Solution
  • Integrated cover glass for optimal, robust performance
  • Programmable sample rate and LED Current for power savings
  • Fast Data output capability: high sample rates
  • Robust motion artifact resilience: high SNR

TinyDuino Power Requirements

  • Voltage: 3.0V - 5.5V 
  • Power: < mW (Low-Power Mode)
  • Current: 0.7uA, typ (Ultra-Low Shutdown Current)

Pins Used

  • A5/SCL - I²C Serial Clock line
  • A4/SDA - I²C Serial Data line 


  • 10mm x 10mm (.39 inches x .39 inches)
  • Max Height (from the lower bottom of Wireling to upper top of pulse sensor) 5.11mm (0.20 inches)
  • Weight: 1 gram (.04 ounces)


You can also use this Wireling without the TinyDuino – modifying the connecting cable by removing the opposite connector and stripping/tinning the wires, you can solder the connector cable to any other microcontroller board of your choice!

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