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Introduction

nodejs library for MetaWear platform from https://www.mbientlab.com/

Installation

Build package from repository:

git clone git@github.com:brainexe/node-metawear.git
cd node-metawear
npm install

An alternative is to install the NPM module directly:

npm install node-metawear

Additionally you have to follow some steps, depending of your OS

Linux (Ubuntu / RaspberryPi)

Install required system packages

sudo apt-get install bluetooth bluez-utils libbluetooth-dev

This command grants the node binary cap_net_raw privileges, so it can start/stop BLE advertising. Then you don't need the "sudo" prefix anymore:

sudo setcap cap_net_raw+eip $(eval readlink -f `which node`)

ChromeOS

Same as Linux, but the main difference here is that you’ll need to run Node through host-dbus, since it’s accessing the Bluetooth adapter attached through Chrome OS.

sudo setcap cap_net_raw+eip $(eval readlink -f `which node`)
export DEBUG="noble-device" 
host-dbus node examples/all.js

thx to Lance

Mac OS

npm install
DEBUG="noble-device" node examples/all.js

Run

Run examples in debug output

DEBUG="noble-device" node examples/all.js

Functions

The functionality is very limited at the moment:

• Connection Parameters setup
• Control LED
• Start buzzer/motor
• Read/Set Device name
• Read switch status (+ pressed/release events)
• Read out battery status
• Accelerometer / Gyroscope
• Step counter
• Temperature sensor
• Ambient light sensor
• Barometer sensor
• BMM150 Magnetometer
• QUATERNION data from SensorFusion, ONLY FOR METAMOTION R Boards !!

Next release -> v1.1.0

• SensorFusion - NDOF mode support for all output types
• Acceleromter - TAP_CONFIG, ORIENT_CONFIG, FLAT_CONFIG, LOW_HIGH_G_CONFIG
• Refactoring of the sensor configuration implementation

Note : The versioning restarted at v1.0.0 in order to better handle the major and minor releases as from now.

Run unit tests

npm install -g jasmine
npm test