The MAX30105 breakout is a sophisticated heart rate, oximeter, and smoke/particle sensor. Use it as a fun way to see your heartbeat, or to make LEDs or lights pulse in time with your heart. <3 It's Raspberry Pi and Arduino-compatible.
This sensor has three LED—green, red, and infra-red—and photodetectors that can be used together to detect the amount of light reflected back to the sensor. A technique called photoplethysmography (PPG) can be used to detect the change in colour of your skin with each beat of your heart when the sensor is pressed against your fingertip.
You can use the MAX30105 to detect particles in the air, like smoke, by measuring the amount of light bounced back to the sensor by the particles. We've got a rough example of how to do this in our Python library.
It's also compatible with our fancy Breakout Garden HAT, where using breakouts is as easy just popping it into one of the six slots and starting to grow your project, create, and code.
If you're using the MAX30105 with Breakout Garden for measuring heart rate, then we'd recommend using one of our Breakout Garden Extender Kits along with some female-to-female jumper wires. This will make it much easier to get reliable heartbeat readings. See Notes below for more information.
This sensor (and the code in our Python library) should not be used for medical diagnosis, as the basis for a real smoke or fire detector, or in life-critical situations. It's for fun/novelty use only, so bear that in mind while using it.
We've designed this breakout board so that you can solder on the piece of right-angle female header and pop it straight onto the bottom left 5 pins on your Raspberry Pi's GPIO header (pins 1, 3, 5, 7, 9).
We've added a new example to our Breakout Garden GitHub repo, showing how you can create a little heart rate display with the MAX30105 breakout, 1.12" OLED breakout, and a Breakout Garden HAT or pHAT.
Here it is in action:
Our Python library makes it straightforward to use your MAX30105 sensor. We've included some examples of how to display and graph and display heart rate, and a rough example of how to detect relative levels of particles like smoke.
SparkFun have put together a really comprehensive Arduino library for the MAX30105 sensor that also includes examples of how to measure blood oxygen saturation (SPO2), temperature, and presence detection.
Our software does not support Raspbian Wheezy.