Learning how to use the Arduino with the Dino gem. This is the start of a binary counter. Maybe will eventually become a binary clock. I only wired up 3 LEDS so I could only count to 7 in this example.

binary_counter.rb

require 'dino'
 
def new_led(pin, board = BOARD)
  Dino::Components::Led.new(:pin => pin, :board => board)
end
 
BOARD = Dino::Board.new(Dino::TxRx.new)
LEDS = [13, 12, 11, 10, 9].map do |pin|
  new_led pin
end
 
def blink(leds, bit_array, status = :on)
  LEDS.length.times do |bit|
    leds[bit].send(status) if is_one? bit_array, bit
  end
end
  
def is_one?(bit_array, bit)
  bit_array[bit] == "1"
end
 
def num_bits_to_a(number)
  binary_number = "%08b" % number
  binary_number.reverse!
  binary_number.split(//)
end
 
def bits_to_light(number)
  bit_array = num_bits_to_a(number)
  blink(LEDS, bit_array)
  sleep 1
  blink(LEDS, bit_array, :off)
end
 
(1..31).cycle do |n|
  bits_to_light(n)
end

I am able to count to 31 since this starter kit came with 5 LEDS. I wanted to use pins 1 and 2 so that pin 1 would be LED 1 in my program but I couldn't get it to late. It is labeled TX and RX on the board I suspect I have some reading to do from here.