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December 10, 2015 14:18
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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.
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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 |
Well, I admit haven't read the Dino source so I couldn't say. In the arduino though, each pin is mapped to a bit on one of the registers available. Although you may have to shift and mask the number depending on which pins the leds are hooked up to and what is connected to the other pins, it should be as simple as doing this:
PORTB = number
Source -> Port Manipulation
@bhelx. I'd have to look into it. I only just started playing with this. I built this out of reading BLINK tutorials.
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.
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@crosson: Go right ahead
@bhelx: I'm assuming some sort of restriction requiring this.