Node.js module for reading data from a Ruuvitag weather station.

Tested on Raspberry Pi 3. Depends on noble. See instructions on how to enable BLE on RasPi and how to run without root.

npm install node-ruuvitag

const ruuvi = require('node-ruuvitag');

ruuvi.on('found', tag => {
  console.log('Found RuuviTag, id: ' + tag.id);
  tag.on('updated', data => {
    console.log('Got data from RuuviTag ' + tag.id + ':\n' +
      JSON.stringify(data, null, '\t'));
  });
});

ruuvi.on('warning', message => {
  console.error(new Error(message));
});

Module ruuvi emits a found event, when a new RuuviTag is discovered. Event's payload is a ruuviTag object (see below)

Module relays noble's warning events (see below)

Finds available ruuvitags. Returns a promise which is resolved with an array of ruuviTag objects or rejected with an error if no tags were found.

If you call findTags multiple times, it always returns all found RuuviTags this far.

Is an eventEmitter .

Properties:

• id: id of beacon
• address: address of beacon
• addressType: addressType of address
• connectable: flag if beacon is connectable

Events:

updated: emitted when weather station data is received. Object data has following properties (depending on data format):

• url -- original broadcasted url if any
• temperature
• pressure
• humidity
• eddystoneId -- in data format 4
• rssi
• battery (battery voltage)
• accelerationX
• accelerationY
• accelerationZ
• txPower -- in data format 5
• movementCounter -- in data format 5
• measurementSequenceNumber -- in data format 5
• mac -- in data format 5

See data formats for info about RuuviTag sensor values.