Contents

#
# Example of how to use the DHT class for DHT 11 and DHT 22 sensors.
#
require 'bundler/setup'
require 'denko'

board = Denko::Board.new(Denko::Connection::Serial.new)
dht = Denko::Sensor::DHT.new(pin: 5, board: board)

# The DHT class pre-processes raw data from the board. When it reaches callbacks
# it's already hash of :temperature and :humidity keys, both with Float values.
dht.add_callback do |reading|
  print "#{Time.now.strftime '%Y-%m-%d %H:%M:%S'} | "
  if reading[:error]
    puts "Error: #{reading[:error]}"
  else
    print "#{reading[:celsius]} \xC2\xB0C | #{reading[:fahrenheit]} \xC2\xB0F | "
    puts "#{reading[:humidity]}% relative humidity"
  end
end

# Read it every 5 seconds.
dht.poll(5)
sleep

Version data entries

7 entries across 7 versions & 1 rubygems

Version	Path
denko-0.13.6	examples/sensor/dht.rb
denko-0.13.5	examples/sensor/dht.rb
denko-0.13.4	examples/sensor/dht.rb
denko-0.13.3	examples/sensor/dht.rb
denko-0.13.2	examples/sensor/dht.rb
denko-0.13.1	examples/sensor/dht.rb
denko-0.13.0	examples/sensor/dht.rb