first test

README.md

@@ -2,11 +2,14 @@
 # Usage Instructions
  * Plug HDMI into Beamer
  * Plug USB into Computer
- * booting the Raspberry takes approximately ?? seconds. the ?? led will light up when ready
+ * booting the Raspberry takes approximately ?? seconds. the green led will light up when ready
  * start freeze.exe from the (now attached) USB-Drive
  * press WindowsKey+Y or Alt+PRINTSCREEN to take a screenshot
  * simply unplug after use
 
+## Other features
+ * you can call freeze.exe with the cmdline argument "single" to just do one screenshot, save it and exit
+
 # Initial setup
 
 ## Parts
@@ -17,7 +20,7 @@
 
 ## Hardware
            LED     LED SW
-     _______|_______|_|____
+     ______||_______|||____
     | :::::::::::::::::::: |
     |                      |
     |_HDMI________USB__PWR_|

raspberry-environment/display.py

@@ -13,8 +13,8 @@ import time
 import subprocess
 import glob
 
-pin_led_ready=27
-pin_led_busy=5
+pin_led_ready=12 # 27
+pin_led_busy=18  #  5
 pin_switch=13
 
 try: