added some new things

README.md

@@ -95,6 +95,37 @@ while True:
 
 **Note:** The interruption of the module when running in threads is not yet handled, you might have to kill it by yourself 🔪
 
+### Controlling Volume level for souncard (needs python-alsaaudio 'sudo apt-get install python-alsaaudio')
+
+```python
+#!/usr/bin/python
+# import sys to set extra python path
+import sys
+
+sys.path.append("/home/pi/.local/lib/python2.7/site-packages")
+
+# Import required python modules, os is probably not required
+from pyky040 import pyky040
+import os
+import alsaaudio
+
+# Set M as variable for long command
+m = alsaaudio.Mixer('Speaker', cardindex=1)
+
+# Define your callback and use python alsaaudio to set volume (scale_position comes from pyky040)
+def my_callback(scale_position):
+    m.setvolume (scale_position)
+
+# Init the encoder pins (chane gpio numbers according to your setup)
+my_encoder = pyky040.Encoder(CLK=17, DT=18, SW=26)
+
+# Setup the options and callbacks (see documentation)
+my_encoder.setup(scale_min=0, scale_max=100, step=1, scale_start=m.getvolume()[0], chg_callback=my_callback)
+
+# Launch the listener
+my_encoder.watch()
+
+```
 ## Documentation
 
 #### `Encoder(CLK=x, DT=y, SW=z)`
@@ -115,6 +146,7 @@ Setup the behavior of the module. All of the following keyword arguments are opt
   - `sw_callback (function)` When the encoder switch is pressed
 
 - Scale mode
+  - `scale_start (int/float)`Starting position of Scale, Set it to 0 if you dont want to set a custom value
   - `scale_min (int/float)` Scale minimum
   - `scale_max (int/float)` Scale maximum
   - `loop (boolean)` Loop mode (defaults to `False`)

pyky040/pyky040.py

@@ -16,7 +16,7 @@ class Encoder:
     sw = None
 
     polling_interval = None  # Polling interval (in ms)
-    sw_debounce_time = 250  # Debounce time (for switch only)
+    sw_debounce_time = 100  # Debounce time (for switch only)
 
     step = 1  # Scale step from min to max
     max_counter = 100  # Scale max
@@ -54,11 +54,10 @@ def setup(self, **params):
         else:
             self.counter_loop = False
 
-        self.counter = self.min_counter + 0
-        if 'scale_min' in params:
-            self.min_counter = params['scale_min']
-        if 'scale_max' in params:
-            self.max_counter = params['scale_max']
+        self.min_counter = params['scale_min']
+        self.counter = params['scale_start']
+        self.max_counter = params['scale_max']
+
         if 'step' in params:
             self.step = params['step']
         if 'inc_callback' in params:

setup.py

@@ -9,7 +9,7 @@
 
 setup(
     name='pyky040',
-    version='0.1.3',
+    version='0.1.5',
     description='High-level interface for the KY040 rotary encoder and switch.',
     long_description=long_description,
     long_description_content_type='text/markdown',