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2401, 2017

How Light Sensors Work

January 24th, 2017|Categories: Guides|Tags: , , |

Introduction Another awesome sensor on the MetaWear platform is the ambient light sensor. An ambient light sensor is a combination of photodiodes and analog-to-digital converters that transform light intensity into a digital signal. How They [...]

2301, 2017

How Gyroscopes Work

January 23rd, 2017|Categories: Guides|Tags: , , |

Introduction In an earlier post, we covered the basics of how an accelerometer works and what kind of data it reports. While accelerometers are great for measuring linear acceleration, they cannot be used to measure [...]

2201, 2017

How Magnetic Field Sensors Work

January 22nd, 2017|Categories: Guides|Tags: , , |

Introduction One of the most highly requested sensors to have on the MetaWear board is a magnetometer. A magnetometer is a sensor that measures magnetic field strength, typically of the Earth’s magnetic field. They come [...]

1808, 2016

How Proximity Sensors Work

August 18th, 2016|Categories: Guides|Tags: , , |

Introduction Proximity sensors are designed to detect the presence of objects without physically touching them. You have most likely seen them at work, automatically turning on faucets, opening doors, and acting as a touch-less switch. [...]

1708, 2016

How Optical Heart Rate Sensors Work

August 17th, 2016|Categories: Guides|Tags: , , |

Introduction Heart rate is a crucial measurement for evaluating one’s health. It is usually measure with a stethoscope or armband, however digital solutions are becoming more commonplace with electrocardiography (ECG) and photoplethysmography (PPG) sensors being [...]

2007, 2016

How to Sync Data from Multiple Sensors

July 20th, 2016|Categories: Guides|Tags: , , |

One MetaBase use-case is to record sensor data using multiple MetaWear boards (and possibly multiple sensors on each board). For example, collecting temperature data from different areas of a room, then analyzing and comparing the [...]

907, 2016

How Humidity Sensors Work

July 9th, 2016|Categories: Guides|Tags: , , |

Introduction Another sensor unique to the MetaEnvironment board is the humidity sensor (hygrometer). As the name implies, this sensor measures the air moisture in the atmosphere. How The Work Electronic sensors measure humidity by measuring [...]

107, 2016

How Color Sensors Work

July 1st, 2016|Categories: Guides|Tags: , , |

Introduction A sensor unique to the Meta Environment board is a color sensor. Like ambient light sensors, a color sensor is responsive to light, however they are manufactured to only respond to visible light, typically [...]