diff --git a/leds.py b/leds.py
index 327c011..d0d1f44 100644
--- a/leds.py
+++ b/leds.py
@@ -53,7 +53,7 @@ class Adafruit_CharLCD:
     LCD_5x10DOTS = 0x04
     LCD_5x8DOTS = 0x00
 
-    def __init__(self, pin_rs=24, pin_e=23, pin_b=04, pins_db=[17, 18, 27, 22], GPIO=None):
+    def __init__(self, pin_rs=24, pin_e=23, pin_b=4, pins_db=[17, 25, 27, 22], pin_rgb=18, GPIO=None):
         # Emulate the old behavior of using RPi.GPIO if we haven't been given
         # an explicit GPIO interface to use
         if not GPIO:
@@ -74,7 +74,7 @@ class Adafruit_CharLCD:
             self.GPIO.setup(pin, GPIO.OUT)
 
         self.GPIO.output(self.pin_b, True)
-        
+
         self.write4bits(0x33)  # initialization
         self.write4bits(0x32)  # initialization
         self.write4bits(0x28)  # 2 line 5x7 matrix
@@ -276,7 +276,7 @@ def querycolor():
 def loop():
     lcd = Adafruit_CharLCD()
     level = 0
-    level_max = 15
+    level_max = 14
     idle = 0
     idle_max = 15
     cur_color = "ffffff"
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..2b944ca
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+rpi_ws281x==4.2.5
\ No newline at end of file