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ScanBeacon gem

A ruby gem that allows you to scan for beacon advertisements using IOBluetooth (on Mac OS X) or a BlueGiga BLE112 device (on mac or linux)

Example Usage

Install the gem

gem install scan_beacon

Tips for installing & using on Ubuntu

Create your scanner

require 'scan_beacon'
# to scan using the default device on mac or linux
scanner = ScanBeacon::DefaultScanner.new
# to scan using CoreBluetooth on a mac
scanner = ScanBeacon::CoreBluetoothScanner.new
# to scan using BlueZ on Linux (make sure you have privileges)
scanner = ScanBeacon::BlueZScanner.new
# to scan using a BLE112 device
scanner = ScanBeacon::BLE112Scanner.new

Start a scan, yield beacons in a loop

scanner.scan do |beacons|
  beacons.each do |beacon|
    puts beacon.inspect
  end
end

Set a specific scan cycle period

require 'scan_beacon'
scanner = ScanBeacon::BLE112Scanner.new cycle_seconds: 5
scanner.scan do |beacons|
  beacons.each do |beacon|
    puts beacon.inspect
  end
end

Scan once for a set period and then return an array of beacons

scanner = ScanBeacon::CoreBluetoothScanner.new cycle_seconds: 2
beacons = scanner.scan

Add a custom beacon layout

By default, this gem supports AltBeacon advertisements. But you can add a beacon parser to support other major beacon formats as well.

Example:

scanner = ScanBeacon::BLE112Scanner.new
scanner.add_parser( ScanBeacon::BeaconParser.new(:mybeacon, "m:2-3=0000,i:4-19,i:20-21,i:22-23,p:24-24") )
...

Advertise as a beacon on Linux using BlueZ or a Mac using IOBluetooth

Example:

# altbeacon
beacon = ScanBeacon::Beacon.new(
  ids: ["2F234454CF6D4A0FADF2F4911BA9FFA6", 11,11],
  power: -59,
  mfg_id: 0x0118,
  beacon_type: :altbeacon
)
advertiser = ScanBeacon::DefaultAdvertiser.new(beacon: beacon)
advertiser.start
...
advertiser.stop

# Eddystone UID
beacon = ScanBeacon::Beacon.new(
  ids: ["2F234454F4911BA9FFA6", 3],
  power: -20,
  service_uuid: 0xFEAA,
  beacon_type: :eddystone_uid
)
advertiser = ScanBeacon::DefaultAdvertiser.new(beacon: beacon)
advertiser.start
...
advertiser.stop

# Eddystone URL (PhysicalWeb)
beacon = ScanBeacon::EddystoneUrlBeacon.new(
  url: "http://radiusnetworks.com",
  power: -20,
)
advertiser = ScanBeacon::DefaultAdvertiser.new(beacon: beacon)
advertiser.start
...
advertiser.stop

Dependencies

To scan for beacons or advertise, you must have a Linux machine with BlueZ installed, or a Mac, or a BLE112 device plugged in to a USB port (on Mac or Linux).

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A Ruby gem for scanning beacons

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  • Ruby 56.3%
  • C 33.1%
  • Objective-C 10.6%