diff --git a/circuitpython/main.py b/circuitpython/main.py
index 43ac286..649ac10 100644
--- a/circuitpython/main.py
+++ b/circuitpython/main.py
@@ -1,7 +1,7 @@
 # Weather and GPS logger
 
 ##########
-# Config #
+# config #
 ##########
 print_data = True
 data_to_neopixel = True
@@ -72,8 +72,8 @@ class Data:
             self.data['GPS'] = None
 
     def show(self):
-            """Serialize data to json-formatted string for
-            visualization on serial console
+            """Serialize data to json-formatted string for visualization on
+            serial console
             """
             for source in self.data.keys():
                 print(source + ": ")
@@ -113,10 +113,10 @@ def check_data_dir():
         os.mkdir('data/daily')
 
 def update_neopixel(data):
-    """Conversion des données en couleur pour affichage sur NeoPixel
-     * ROUGE => temp?rature : max = 35?C, min =10?C soit une amplitude de 25?C
-     * BLEU => humidit? : max= 100%, mini=0%
-     * VERT => Pression : mini=960hPa, maxi = 1030hPa soit une amplitude 70hPa
+    """Convert atmospheric data from BME280 sensor into NeoPixel color
+     * RED => temperature : max = 35degC, min =10degC (range 25°C)
+     * BLUE => humidity : max= 100%, mini=0%
+     * GREEN => pression : mini=960hPa, maxi = 1030hPa (range 70hPa)
     """
 
     rouge = int((data['BME280']['temp']['val']-10)*255/25)
@@ -152,8 +152,8 @@ clock.datetime = time.struct_time((2018, 7, 29, 15, 31, 30, 0, 0, 0))
 # BME280 sensors (I2C)
 i2c = I2C(board.SCL, board.SDA)
 # i2c addresses for BME280 breakout :
-#   0x77 = adafruit board
-#   0x76 = chinese board
+#   0x77 = adafruit breakout board
+#   0x76 = tiny chinese board
 bme280 = Adafruit_BME280_I2C(i2c, address=0x76)
 
 # Battery voltage