Ruby driver for the Delcom USB HID Visual Signal Indicator RGY (904008, generation II)¶ ↑

Provides a simple interface to turn on/off the red, green and yellow LEDs.

It should be pretty trivial to adapt this driver to work with any generation II signal indicator, however I only have access to the RGY version.

Requirements¶ ↑

• ruby-usb: www.a-k-r.org/ruby-usb

Example usage¶ ↑

require 'timeout'
require 'delcom_904008'

light = Delcom::SignalIndicator.new

begin
  Timeout::timeout(5) do
    loop do
      light.red
      sleep 0.1
      light.off
      sleep 0.05
    end
  end
rescue Timeout::Error
  light.off
end

light.close