Using the Simple RaspberryPi gem
require 'simple_raspberrypi'
red = SimpleRaspberryPi.new(4).pin
red.blink duration: 5
The above code will make a red LED (attached to GPIO 4) blink for 5 seconds.
Resources
- simple_raspberrypi https://rubygems.org/gems/simple_raspberrypi
raspberrypi rpi led pins blink