beagleboard

require 'beagleboard'

device = BeagleBoard::BeagleBoneBlack.new

# ADCs access
device.p9_39.scale = 100
device.p9_39.raw_value   #=> 2559
device.p9_39.value       #=> 62
device.p9_39.scale = 1.0
device.p9_39.value       #=> 0.624755859375

# GPIO access
device.p8_7.direction = :in
device.p8_7.value            #=> 0 or 1
device.p8_8.direction = :out
device.p8_8.value = 0

# Helpers for setting direction and value 
device.p8_9.direction = :low
device.p8_9.direction = :high

# USR LEDs access (they are GPIO)
10.times do
  device.usr0.value = 1
  sleep 0.1
  device.usr0.value = 0
  sleep 0.1
end