Introducing the rpi_vibratingmotor gem

require 'rpi_vibratingrmessage'

RPiVibratingMotor.new(4).incoming_email_message

Output:

Listen to the audio of the vibrator motor for an incoming email message.

• 3 Pcs 1400RPM Speed 3V Mobile Phone Micro DC Coin Vibration Motor http://www.jamesrobertson.eu/cpages/2016/feb/27/3-pcs-1400rpm-speed-3v-mobile-phone-micro-dc-coin-vibration-motor-ebay-co-uk.html
• rpi_vibratingmotor https://rubygems.org/gems/rpi_vibratingmotor

vibratingmotor gem rpi_vibratingmotor alert audio