Update README to clarify non-US keyboard instructions (#70)

Co-authored-by: unknown <ask.wietting@gmail.com>

README.md

@@ -50,7 +50,7 @@ Enter setup mode.
 Copy boot.py to the root of the pico-ducky.  
 Copy your payload script to the pico-ducky.  
 Disconnect the pico from your host PC.
-Connect a jumper wire between pin 18 and pin 20.
+Connect a jumper wire between pin 18 (`GND`) and pin 20 (`GPIO15`).
 This will prevent the pico-ducky from showing up as a USB drive when plugged into the target computer.  
 Remove the jumper and reconnect to your PC to reprogram.
 The default mode is USB mass storage enabled.   
@@ -111,6 +111,22 @@ from keyboard_layout_win_LANG import KeyboardLayout
 from keycode_win_LANG import Keycode
 ```
 
+##### Example:  Set to German Keyboard (WIN_DE)
+
+```py
+from keyboard_layout_win_de import KeyboardLayout
+from keycode_win_de import Keycode
+```
+
+Copy the files keyboard_layout_win_de.mpy and keycode_win_de.mpy to the /lib folder on the Pico board
+```
+adafruit_hid/
+keyboard_layout_win_de.mpy
+keycode_win_de.mpy
+```
+
+
+
 ## Useful links and resources
 
 ### Docs

duckyinpython.py

@@ -14,11 +14,30 @@ from adafruit_hid.keycode import Keycode
 #from keyboard_layout_win_LANG import KeyboardLayout
 #from keycode_win_LANG import Keycode
 
+import supervisor
+
 import time
 import digitalio
 from board import *
-led = digitalio.DigitalInOut(LED)
-led.direction = digitalio.Direction.OUTPUT
+import pwmio
+
+led = pwmio.PWMOut(LED, frequency=5000, duty_cycle=0)
+
+def led_pwm_up(led):
+    for i in range(100):
+        # PWM LED up and down
+        if i < 50:
+            led.duty_cycle = int(i * 2 * 65535 / 100)  # Up
+        time.sleep(0.01)
+def led_pwm_down(led):
+    for i in range(100):
+        # PWM LED up and down
+        if i >= 50:
+            led.duty_cycle = 65535 - int((i - 50) * 2 * 65535 / 100)  # Down
+        time.sleep(0.01)
+
+# led = digitalio.DigitalInOut(LED)
+# led.direction = digitalio.Direction.OUTPUT
 
 duckyCommands = {
     'WINDOWS': Keycode.WINDOWS, 'GUI': Keycode.GUI,
@@ -101,9 +120,13 @@ def parseLine(line):
 kbd = Keyboard(usb_hid.devices)
 layout = KeyboardLayout(kbd)
 
+# turn off automatically reloading when files are written to the pico
+supervisor.disable_autoreload()
+
 # sleep at the start to allow the device to be recognized by the host computer
 time.sleep(.5)
 
+led_pwm_up(led)
 
 def getProgrammingStatus():
     # check GP0 for setup mode
@@ -120,19 +143,22 @@ def runScript(file):
     global defaultDelay
 
     duckyScriptPath = file
-    f = open(duckyScriptPath,"r",encoding='utf-8')
-    previousLine = ""
-    for line in f:
-        line = line.rstrip()
-        if(line[0:6] == "REPEAT"):
-            for i in range(int(line[7:])):
-                #repeat the last command
-                parseLine(previousLine)
-                time.sleep(float(defaultDelay)/1000)
-        else:
-            parseLine(line)
-            previousLine = line
-        time.sleep(float(defaultDelay)/1000)
+    try:
+        f = open(duckyScriptPath,"r",encoding='utf-8')
+        previousLine = ""
+        for line in f:
+            line = line.rstrip()
+            if(line[0:6] == "REPEAT"):
+                for i in range(int(line[7:])):
+                    #repeat the last command
+                    parseLine(previousLine)
+                    time.sleep(float(defaultDelay)/1000)
+            else:
+                parseLine(line)
+                previousLine = line
+            time.sleep(float(defaultDelay)/1000)
+    except OSError as e:
+        print("Unable to open file ", file)
 
 def selectPayload():
     payload = "payload.dd"
@@ -187,3 +213,13 @@ if(progStatus == False):
     print("Done")
 else:
     print("Update your payload")
+
+led_state = False
+while True:
+    if led_state:
+        led_pwm_up(led)
+        led_state = False
+    else:
+        led_pwm_down(led)
+        led_state = True
+