Ruuvitag

The Ruuvitag is a Bluetooth LE beacon with an environment sensor and accelerometer built in.

NOTE: Espruino for Ruuvitag is no longer officially supported. The last available build is 2v06

Full details on flashing Ruuvitag can be found at https://ruu.vi/setup

Binaries can be found in:

• the Download page - either from the list of firmwares, or a downloadable ZIP.
• the binaries folder (current version)
• the automatic Travis Builds (cutting edge builds)

Contents

• Using
• Saving Code
• Tutorials
• Reference
• Firmware Updates

Using

Ruuvitag can be used like any other Espruino Bluetooth LE device, with full access to the NRF class for BLE Functionality.

Check out the Getting Started Guide

However to use the built-in sensors you will need to use the Ruuvitag library. For instance to get data, use:

var Ruuvitag = require("Ruuvitag");
Ruuvitag.setEnvOn(true);
Ruuvitag.setAccelOn(true);
console.log(Ruuvitag.getEnvData());
// prints { "temp": 23.70573815741, "pressure": 1017.27733597036, "humidity": 42.0771484375 }
console.log(Ruuvitag.getAccelData());
// prints { "x": 3.90625, "y": -7.8125, "z": 984.375 }

You can also call a function whenever acceleration data is received:

var Ruuvitag = require("Ruuvitag");
Ruuvitag.setAccelOn(true, function(xyz) {
  console.log(xyz);
});

By default Espruino uses the low power accelerometer mode, however the peripherals can be accessed directly:

• Ruuvitag.env is an instance of the BME280 environment sensor library
• Ruuvitag.accel is an instance of the LIS2DH12 accelerometer library

Saving Code

Normally, uploading code to Espruino will put everything in RAM and it will be lost when power is removed. You can type save() on the left-hand side of the IDE to save to Flash memory though (more information).

When you do that, the sensors will require initialising at power on (so may not work if you 'just' save your code). You'll need to create an onInit function like this, where you turn the sensors' power on at boot time:

var Ruuvitag = require("Ruuvitag");

function onInit() {
  Ruuvitag.setAccelOn(true, function(xyz) {
    console.log(xyz);
  });
}

Tutorials

First, it's best to check out the Getting Started Guide

Tutorials using Bluetooth LE:

Bluetooth LE Emoji Advertising Battery Monitor LEGO Power Functions Clone Remote Control (Mould King M-0006 / Kaiyu / Bandra / AKOGD / MayD / etc) BTHome Library Tilt Hydrometer Repeater Quick Start (Bluetooth LE) BLE Advertising with Node.js/Python/C#/Android Automatic Data Download Puck.js to GCP BigQuery & Data Studio Stream from Puck.js to AWS IOT Core & SNS Email Bluetooth LE UARTs (NUS) Bluetooth LE HID Keyboards Bluetooth LE Security and Access Control Bluetooth LE MIDI Web Bluetooth on Linux Bluetooth Time Setter Using Web Bluetooth with Espruino Bluetooth LE and If This Then That UART.js Library iBeacons Eddystone Beacons Bluetooth LE Printers Bluetooth LE and Node-RED with MQTT Bluetooth Music Controller Controlling Bluetooth Lights with Puck.js Bluetooth LE HTTP Proxies Exercise Machine controlled Video BLE Communications About Bluetooth LE (BLE) Puck.js with SMS control Pixl.js SMS Remote Monitoring Web IDE on a Raspberry Pi Puck.js Bluetooth with the Graphical Editor Controlling Other BLE Espruino Devices Pixl.js Simple Logger Pixl.js Multiplayer Pong Game Pixl.js Bluetooth to Ethernet MQTT Bridge BLE Characteristic Scan LED BLE Library Bluefruit LE app interface

Tutorials using Bluetooth LE and functionality that may not be part of Ruuvitag:

Puck.js Vibration Sensor DIY Smart Meter BTHome Door Sensor for Home Assistant BTHome and Home Assistant Setup Pixl.js Wireless Temperature Display Turning an Espruino Puck.js Into a Universal Presentation Clicker Interfacing to a PC Controlling Espruino from Tensorflow on the Desktop Bookmarklets with Web Bluetooth Bangle.js Data Streaming Puckmote - Universal Remote Control IoT for Kitchen Gardens Time Machine Retro-Inspired Smartwatch Talos, Keeping You Safe During Your Commute Bluetooth Energy Usage Monitor Electric Skateboard Controller Wooden Bluetooth Remote for Lego Duplo Train Puck.js Control from Android using DroidScript Ikea Eneby Speaker Controller Pixl.js Wireless Weather Station Temperature Controlled Night Light with Puck.js Infrared Record and Playback with Puck.js Door Controlled Light with Puck.js Freezer Alarm

Reference

// Set whether the environmental sensor is on or off
exports.setEnvOn = function (on) { ... }

/* Set whether the accelerometer is on or off. A callback can be supplied
  which will be called with an {x,y,z} argument
*/
exports.setAccelOn = function (on, callback) { ... }

// Get the last received environment data { temp: degrees_c, pressure: kPa, humidity: % }
exports.getEnvData = function () { ... }

// Get the last received accelerometer data, or undefined
exports.getAccelData = function () { ... }

Firmware Updates

Check out Ruuvi's DFU instructions