diff --git a/micropython/examples/plasma_stick/pulse.py b/micropython/examples/plasma_stick/pulse.py
index 99ffba1a..0c7b2af8 100644
--- a/micropython/examples/plasma_stick/pulse.py
+++ b/micropython/examples/plasma_stick/pulse.py
@@ -1,4 +1,3 @@
-import time
 import plasma
 from plasma import plasma_stick
 from math import sin
@@ -27,16 +26,14 @@ while True:
     for i in range(NUM_LEDS):
         led_strip.set_hsv(i, COLOUR, 1.0, sin(offset))
     offset += 0.002
-    
+
 #     # our sine wave goes between -1.0 and 1.0 - this means the LEDs will be off half the time
 #     # this formula forces the brightness to be between 0.0 and 1.0
 #     for i in range(NUM_LEDS):
 #         led_strip.set_hsv(i, COLOUR, 1.0, (1 + sin(offset)) / 2)
 #     offset += 0.002
-    
+
 #     # adjust the saturation instead of the brightness/value
 #     for i in range(NUM_LEDS):
 #         led_strip.set_hsv(i, COLOUR, (1 + sin(offset)) / 2, 0.8)
 #     offset += 0.002
-
-
diff --git a/micropython/examples/plasma_stick/snow.py b/micropython/examples/plasma_stick/snow.py
index f2a47702..1a19e1b4 100644
--- a/micropython/examples/plasma_stick/snow.py
+++ b/micropython/examples/plasma_stick/snow.py
@@ -10,7 +10,7 @@ Adjust SNOW_INTENSITY for more snow.
 # Set how many LEDs you have
 NUM_LEDS = 50
 
-# How much snow? [bigger number = more snowflakes] 
+# How much snow? [bigger number = more snowflakes]
 SNOW_INTENSITY = 0.0002
 
 # Change RGB colours here (RGB colour picker: https://g.co/kgs/k2Egjk )
@@ -27,6 +27,7 @@ def display_current():
     for i in range(NUM_LEDS):
         led_strip.set_rgb(i, current_leds[i][0], current_leds[i][1], current_leds[i][2])
 
+
 def move_to_target():
     # nudge our current colours closer to the target colours
     for i in range(NUM_LEDS):
@@ -51,11 +52,11 @@ led_strip.start()
 while True:
     for i in range(NUM_LEDS):
         # randomly add snow
-        if SNOW_INTENSITY > uniform(0, 1): 
+        if SNOW_INTENSITY > uniform(0, 1):
             # set a target to start a snowflake
             target_leds[i] = SNOW_COLOUR
         # slowly reset snowflake to background
         if current_leds[i] == target_leds[i]:
-             target_leds[i] = BACKGROUND_COLOUR       
+            target_leds[i] = BACKGROUND_COLOUR
     move_to_target()   # nudge our current colours closer to the target colours
     display_current()  # display current colours to strip
diff --git a/micropython/examples/plasma_stick/sparkles.py b/micropython/examples/plasma_stick/sparkles.py
index 2abbb1ca..bc3cbc2a 100644
--- a/micropython/examples/plasma_stick/sparkles.py
+++ b/micropython/examples/plasma_stick/sparkles.py
@@ -26,6 +26,7 @@ def display_current():
     for i in range(NUM_LEDS):
         led_strip.set_rgb(i, current_leds[i][0], current_leds[i][1], current_leds[i][2])
 
+
 def move_to_target():
     # nudge our current colours closer to the target colours
     for i in range(NUM_LEDS):
@@ -50,11 +51,11 @@ led_strip.start()
 while True:
     for i in range(NUM_LEDS):
         # randomly add sparkles
-        if SPARKLE_INTENSITY > uniform(0, 1): 
+        if SPARKLE_INTENSITY > uniform(0, 1):
             # set a target to start a sparkle
             target_leds[i] = SPARKLE_COLOUR
         # for any sparkles that have achieved max sparkliness, reset them to background
         if current_leds[i] == target_leds[i]:
-             target_leds[i] = BACKGROUND_COLOUR       
+            target_leds[i] = BACKGROUND_COLOUR
     move_to_target()   # nudge our current colours closer to the target colours
     display_current()  # display current colours to strip
diff --git a/micropython/examples/plasma_stick/tree.py b/micropython/examples/plasma_stick/tree.py
index 773d9096..a06df33c 100644
--- a/micropython/examples/plasma_stick/tree.py
+++ b/micropython/examples/plasma_stick/tree.py
@@ -15,11 +15,11 @@ NUM_LEDS = 50
 # to convert a hue that's in degrees, divide it by 360
 TREE_COLOUR = [0.34, 1.0, 0.6]
 LIGHT_RATIO = 8  # every nth pixel is a light, the rest are tree.
-LIGHT_COLOURS = ((0.0, 1.0, 1.0),  # red
-                 (0.1, 1.0, 1.0),  # orange
-                 (0.6, 1.0, 1.0),  # blue
-                 (0.85, 0.4, 1.0)) # pink
-LIGHT_CHANGE_CHANCE = 0.5  # change to 0.0 if you want static lights 
+LIGHT_COLOURS = ((0.0, 1.0, 1.0),   # red
+                 (0.1, 1.0, 1.0),   # orange
+                 (0.6, 1.0, 1.0),   # blue
+                 (0.85, 0.4, 1.0))  # pink
+LIGHT_CHANGE_CHANCE = 0.5  # change to 0.0 if you want static lights
 
 # set up the WS2812 / NeoPixel™ LEDs
 led_strip = plasma.WS2812(NUM_LEDS, 0, 0, plasma_stick.DAT, color_order=plasma.COLOR_ORDER_RGB)
@@ -27,17 +27,16 @@ led_strip = plasma.WS2812(NUM_LEDS, 0, 0, plasma_stick.DAT, color_order=plasma.C
 # start updating the LED strip
 led_strip.start()
 
-#initial setup 
+# initial setup
 for i in range(NUM_LEDS):
     if i % LIGHT_RATIO == 0:  # add an appropriate number of lights
-        led_strip.set_hsv(i, *choice(LIGHT_COLOURS))  ## choice randomly chooses from a list
+        led_strip.set_hsv(i, *choice(LIGHT_COLOURS))  # choice randomly chooses from a list
     else:  # GREEN
         led_strip.set_hsv(i, *TREE_COLOUR)
-        
+
 # animate
 while True:
     for i in range(NUM_LEDS):
         if (i % LIGHT_RATIO == 0) and (random() < LIGHT_CHANGE_CHANCE):
             led_strip.set_hsv(i, *choice(LIGHT_COLOURS))
     time.sleep(0.5)
-