diff --git a/pingo/examples/analog_bars.py b/pingo/examples/analog_bars.py
index ccf9179..f733e77 100644
--- a/pingo/examples/analog_bars.py
+++ b/pingo/examples/analog_bars.py
@@ -1,11 +1,12 @@
 import pingo
+from pingo import Mode
 import time
 
 board = pingo.detect.get_board()
 # board = pingo.arduino.get_arduino()
 
 pot = board.pins['A0']
-pot.mode = pingo.ANALOG
+pot.mode = Mode.ANALOG
 
 
 def bar(pin):
diff --git a/pingo/examples/blink.py b/pingo/examples/blink.py
index f6d8b26..48e4c48 100644
--- a/pingo/examples/blink.py
+++ b/pingo/examples/blink.py
@@ -9,10 +9,11 @@
 
 import time
 import pingo
+from pingo import Mode
 
 board = pingo.detect.get_board()
 led = board.pins[13]
-led.mode = pingo.OUT
+led.mode = Mode.OUT
 
 while True:
     led.toggle()
diff --git a/pingo/examples/blink_firmata.py b/pingo/examples/blink_firmata.py
index 8565541..3bbbc4c 100644
--- a/pingo/examples/blink_firmata.py
+++ b/pingo/examples/blink_firmata.py
@@ -9,11 +9,12 @@
 
 import time
 import pingo
+from pingo import Mode
 
 ard = pingo.arduino.ArduinoFirmata('/dev/tty.usbmodemfa1341')
 print('Connected to: %s' % ard)
 led = ard.pins[13]
-led.mode = pingo.OUT
+led.mode = Mode.OUT
 
 while True:
     led.toggle()
diff --git a/pingo/examples/blink_firmata_auto.py b/pingo/examples/blink_firmata_auto.py
index 4a08c52..e56fc5b 100644
--- a/pingo/examples/blink_firmata_auto.py
+++ b/pingo/examples/blink_firmata_auto.py
@@ -9,11 +9,12 @@
 
 import time
 import pingo
+from pingo import Mode
 
 ard = pingo.arduino.get_arduino()
 print('Connected to: %s' % ard)
 led = ard.pins[13]
-led.mode = pingo.OUT
+led.mode = Mode.OUT
 
 while True:
     led.toggle()
diff --git a/pingo/examples/dimmer.py b/pingo/examples/dimmer.py
index b86db10..4ce4b68 100644
--- a/pingo/examples/dimmer.py
+++ b/pingo/examples/dimmer.py
@@ -8,20 +8,21 @@
 
 from pprint import pprint
 import pingo
+from pingo import Mode
 import time
 
 board = pingo.detect.get_board()
 
 pot = board.pins['A0']
-pot.mode = pingo.ANALOG
+pot.mode = Mode.ANALOG
 
 led = board.pins[6]
-led.mode = pingo.PWM
+led.mode = Mode.PWM
 
 display_pins = [board.pins[i] for i in range(8, 14) + [7]]
 seg_display = pingo.parts.led.SevenSegments(*display_pins)
 for pin in display_pins:
-    pin.mode = pingo.OUT
+    pin.mode = Mode.OUT
 
 
 def bar(pin):
diff --git a/pingo/examples/dojo.py b/pingo/examples/dojo.py
index e754ddd..00209f0 100644
--- a/pingo/examples/dojo.py
+++ b/pingo/examples/dojo.py
@@ -13,15 +13,16 @@
 
 import time
 import pingo
+from pingo import Mode
 
 board = pingo.detect.get_board()
 print('board: %s' % board)
 pot = board.pins['A0']
-pot.mode = pingo.ANALOG
+pot.mode = Mode.ANALOG
 leds = board.digital_pins[6:14]
 
 for led in leds:
-    led.mode = pingo.OUT
+    led.mode = Mode.OUT
     led.low()
 
 while True:
@@ -30,5 +31,5 @@
             continue
         led.high()
         time.sleep(pot.ratio())
-        print pot.ratio()
+        print(pot.ratio())
         led.low()
diff --git a/pingo/examples/dojo2.py b/pingo/examples/dojo2.py
index 9652046..037c465 100644
--- a/pingo/examples/dojo2.py
+++ b/pingo/examples/dojo2.py
@@ -12,6 +12,7 @@
 
 from time import sleep
 import pingo
+from pingo import Mode
 
 POT_LOCATION = 'A0'
 PIN_LOCATIONS = range(6, 14)
@@ -21,7 +22,7 @@
 leds = (pingo.pins[loc] for loc in PIN_LOCATIONS if loc != 9)
 
 for led in leds:
-    led.mode = pingo.OUT
+    led.mode = Mode.OUT
 
 while True:
     for led in leds:
diff --git a/pingo/examples/dojoxxl.py b/pingo/examples/dojoxxl.py
index 609a07e..fe33d14 100644
--- a/pingo/examples/dojoxxl.py
+++ b/pingo/examples/dojoxxl.py
@@ -3,10 +3,11 @@
 """
 
 import pingo
+from pingo import Mode
 import time
 
 ard = pingo.arduino.get_arduino()
-print '*' * 60
+print('*' * 60)
 
 segments = [
     11,  # A
@@ -20,17 +21,17 @@
 
 for seg in segments:
     pin = ard.pins[seg]
-    pin.mode = pingo.OUT
+    pin.mode = Mode.OUT
     pin.low()
 
 pot = ard.pins['A0']
-pot.mode = pingo.IN
+pot.mode = Mode.IN
 
 while True:
     for seg in segments:
         pin = ard.pins[seg]
         pin.high()
         delay = pot.ratio() + 0.01  # add 0.01s delay for communication
-        print '%0.3f' % delay
+        print('%0.3f' % delay)
         time.sleep(delay)
         pin.low()
diff --git a/pingo/examples/double_blink.py b/pingo/examples/double_blink.py
index 60b2a53..df8461c 100644
--- a/pingo/examples/double_blink.py
+++ b/pingo/examples/double_blink.py
@@ -10,14 +10,15 @@
 
 import time
 import pingo
+from pingo import Mode
 
 board = pingo.rpi.RaspberryPiBPlus()
 local_led = board.pins[13]
-local_led.mode = pingo.OUT
+local_led.mode = Mode.OUT
 
 ard = pingo.arduino.get_arduino()
 remote_led = ard.pins[13]
-remote_led.mode = pingo.OUT
+remote_led.mode = Mode.OUT
 
 local_led.low()  # for an common anode RGB LED
 remote_led.low()
diff --git a/pingo/examples/dual_analog_bars.py b/pingo/examples/dual_analog_bars.py
index 0660031..d9bfddc 100644
--- a/pingo/examples/dual_analog_bars.py
+++ b/pingo/examples/dual_analog_bars.py
@@ -1,20 +1,21 @@
 import pingo
 import time
+from pingo import Mode
 
 galileo = pingo.detect.get_board()
 arduino = pingo.arduino.get_arduino()
 
 pot_galileo = galileo.pins['A0']
-pot_galileo.mode = pingo.ANALOG
+pot_galileo.mode = Mode.ANALOG
 
 pot_arduino = arduino.pins['A0']
-pot_arduino.mode = pingo.ANALOG
+pot_arduino.mode = Mode.ANALOG
 
 
 def bar(pin1, pin2):
     bar1 = ('*' * int(pin1.ratio() * 40)).ljust(40)
     bar2 = ('*' * int(pin2.ratio() * 40)).rjust(40)
-    print bar2 + bar1
+    print(bar2 + bar1)
 
 while True:
     bar(pot_galileo, pot_arduino)
diff --git a/pingo/examples/galileo_analog_bars.py b/pingo/examples/galileo_analog_bars.py
index 7cc2e98..ee34605 100644
--- a/pingo/examples/galileo_analog_bars.py
+++ b/pingo/examples/galileo_analog_bars.py
@@ -1,14 +1,15 @@
-import pingo
 import time
+import pingo
+from pingo import Mode
 
 board = pingo.galileo.Galileo2()
 
 pot = board.pins['A0']
-pot.mode = pingo.ANALOG
+pot.mode = Mode.ANALOG
 
 
 def bar(pin):
-    print "*" * int(pin.ratio() * 70)
+    print("*" * int(pin.ratio() * 70))
 
 while True:
     bar(pot)
diff --git a/pingo/examples/map7segment.py b/pingo/examples/map7segment.py
index 838fdd0..4da5111 100644
--- a/pingo/examples/map7segment.py
+++ b/pingo/examples/map7segment.py
@@ -3,14 +3,15 @@
 """
 
 import pingo
+from pingo import Mode
 
 ard = pingo.arduino.get_arduino()
-print '*' * 60
+print('*' * 60)
 segs = {}
 
 for i in range(14):
     pin = ard.pins[i]
-    pin.mode = pingo.OUT
+    pin.mode = Mode.OUT
     pin.hi()
     seg = raw_input('Pin %s -> segment: ' % i).strip()
     if seg:
@@ -18,4 +19,4 @@
     pin.low()
 
 for seg, pin in sorted(segs.items()):
-    print '%s, # %s' % (pin, seg)
+    print('%s, # %s' % (pin, seg))
diff --git a/pingo/examples/parts/7seg_demo.py b/pingo/examples/parts/7seg_demo.py
index a48523a..9afd14d 100644
--- a/pingo/examples/parts/7seg_demo.py
+++ b/pingo/examples/parts/7seg_demo.py
@@ -1,7 +1,7 @@
 """ Seven segment display demo using the Garoa Dojo Shield """
 
 from time import sleep
-from pingo import OUT, detect, parts
+from pingo import Mode, detect, parts
 
 INTERVAL = 0.3
 
@@ -10,7 +10,7 @@
 display_pins = [ard.pins[i] for i in range(8, 14) + [7]]
 
 for pin in display_pins:
-    pin.mode = OUT
+    pin.mode = Mode.OUT
 
 seg_display = parts.led.SevenSegments(*display_pins)
 
diff --git a/pingo/examples/parts/led_demo.py b/pingo/examples/parts/led_demo.py
index 0641029..c6b83df 100644
--- a/pingo/examples/parts/led_demo.py
+++ b/pingo/examples/parts/led_demo.py
@@ -13,5 +13,5 @@
     a_state = '*A*' if a_led.lit else ' a '
     b_state = '*B*' if b_led.lit else ' b '
 
-    print time.strftime('%H:%M:%S'), a_state, b_state
+    print("%s %s %s" % (time.strftime('%H:%M:%S'), a_state, b_state))
     time.sleep(.1)
diff --git a/pingo/examples/pongo.py b/pingo/examples/pongo.py
index 8e9e60c..5ffb221 100644
--- a/pingo/examples/pongo.py
+++ b/pingo/examples/pongo.py
@@ -14,6 +14,7 @@
 
 import curses
 import pingo
+from pingo import Mode
 import time
 import random
 
@@ -64,10 +65,10 @@ def draw_paddle(x, y, color):
     arduino = pingo.arduino.get_arduino()
 
     pot_galileo = galileo.pins['A0']
-    pot_galileo.mode = pingo.ANALOG
+    pot_galileo.mode = Mode.ANALOG
 
     pot_arduino = arduino.pins['A0']
-    pot_arduino.mode = pingo.ANALOG
+    pot_arduino.mode = Mode.ANALOG
 
     # Read the initial values of the paddles
     paddle_1_pos = int(pot_arduino.ratio(to_min=MIN_Y, to_max=MAX_Y-PADDLE_SIZE))
diff --git a/pingo/examples/probe_pins.py b/pingo/examples/probe_pins.py
index 508b292..40eb294 100644
--- a/pingo/examples/probe_pins.py
+++ b/pingo/examples/probe_pins.py
@@ -7,6 +7,7 @@
 import sys
 
 import pingo
+from pingo import Mode
 
 
 def probe(first, last):
@@ -16,7 +17,7 @@ def probe(first, last):
     pins = board.digital_pins[first:last + 1]
 
     for pin in pins:
-        pin.mode = pingo.OUT
+        pin.mode = Mode.OUT
 
     for pin in pins:
         pin.hi()
diff --git a/pingo/examples/pwm.py b/pingo/examples/pwm.py
index e0a46e5..8d91669 100644
--- a/pingo/examples/pwm.py
+++ b/pingo/examples/pwm.py
@@ -5,14 +5,15 @@
 
 from pprint import pprint
 import pingo
+from pingo import Mode
 import time
 
-board = pingo.detect.get_board()
-print board
 
+board = pingo.detect.get_board()
+print(board)
 
 led = board.pins[6]
-led.mode = pingo.PWM
+led.mode = Mode.PWM
 
 pprint(board.pins, indent=4, width=1)
 
diff --git a/pingo/examples/rgb_led.py b/pingo/examples/rgb_led.py
index 18431af..a010e8d 100644
--- a/pingo/examples/rgb_led.py
+++ b/pingo/examples/rgb_led.py
@@ -1,13 +1,14 @@
 import time
 
 import pingo
+from pingo import Mode
 
 board = pingo.detect.get_board()
 
 rgb = [board.pins[i] for i in (11, 13, 15)]
 
 for pin in rgb:
-    pin.mode = pingo.OUT
+    pin.mode = Mode.OUT
     pin.low()
 
 while True:
diff --git a/pingo/examples/rpi_examples/display7.py b/pingo/examples/rpi_examples/display7.py
index 84f96db..06ba833 100644
--- a/pingo/examples/rpi_examples/display7.py
+++ b/pingo/examples/rpi_examples/display7.py
@@ -1,4 +1,5 @@
 import pingo
+from pingo import Mode
 import time
 
 rpi = pingo.rpi.RaspberryPi()
@@ -9,7 +10,7 @@
         if pin.location in led_locations]
 
 for pin in pins:
-    pin.mode = pingo.OUT
+    pin.mode = Mode.OUT
 
 for pin in pins:
     pin.high()
diff --git a/pingo/examples/rpi_examples/display7_anim.py b/pingo/examples/rpi_examples/display7_anim.py
index 4e61959..0699865 100644
--- a/pingo/examples/rpi_examples/display7_anim.py
+++ b/pingo/examples/rpi_examples/display7_anim.py
@@ -1,4 +1,5 @@
 import pingo
+from pingo import Mode
 from time import sleep
 
 rpi = pingo.rpi.RaspberryPi()
@@ -9,7 +10,7 @@
 pins = [rpi.pins[loc] for loc in led_locations[:6]]
 
 for pin in pins:
-    pin.mode = pingo.OUT
+    pin.mode = Mode.OUT
     pin.low()
 
 while True:
diff --git a/pingo/examples/rpi_examples/display7_probe.py b/pingo/examples/rpi_examples/display7_probe.py
index 9271cea..52df134 100644
--- a/pingo/examples/rpi_examples/display7_probe.py
+++ b/pingo/examples/rpi_examples/display7_probe.py
@@ -1,4 +1,5 @@
 import pingo
+from pingo import Mode
 
 rpi = pingo.rpi.RaspberryPi()
 
@@ -7,7 +8,7 @@
 pins = [rpi.pins[loc] for loc in led_locations]
 
 for pin in pins:
-    pin.mode = pingo.OUT
+    pin.mode = Mode.OUT
     pin.low()
 
 for pin in pins:
diff --git a/pingo/examples/rpi_examples/display7_snake.py b/pingo/examples/rpi_examples/display7_snake.py
index d20663e..e44b4c8 100644
--- a/pingo/examples/rpi_examples/display7_snake.py
+++ b/pingo/examples/rpi_examples/display7_snake.py
@@ -1,4 +1,5 @@
 import pingo
+from pingo import Mode
 from time import sleep
 
 rpi = pingo.rpi.RaspberryPi()
@@ -9,7 +10,7 @@
 pins = [rpi.pins[loc] for loc in led_sequence]
 
 for pin in pins:
-    pin.mode = pingo.OUT
+    pin.mode = Mode.OUT
     pin.low()
 
 prev_pin = pins[-1]
diff --git a/pingo/examples/switch.py b/pingo/examples/switch.py
index ed23ccc..f0f9889 100644
--- a/pingo/examples/switch.py
+++ b/pingo/examples/switch.py
@@ -15,13 +15,13 @@
 def show_f():
     global seg_display
     seg_display.digit = 0xF
-    print 'Fechado'  # Closed
+    print('Fechado'-  # Closed
 
 
 def show_a():
     global seg_display
     seg_display.digit = 0xA
-    print 'Aberto'  # Open
+    print('Aberto')  # Open
 
 pin_sw = board.pins[3]
 my_switch = pingo.parts.Switch(pin_sw)