demos: Update UUID usage of WS2812 demo

demos/ble-ws2812-card10.py

@@ -4,9 +4,9 @@ from micropython import const
 _IRQ_GATTS_WRITE = const(3)
 
 WS2812_SERVICE_UUID = \
-    bluetooth.UUID("23230300-2342-2342-2342-234223422342")
+    bluetooth.UUID("23238000-2342-2342-2342-234223422342")
 SET_ALL = (
-    bluetooth.UUID("23230301-2342-2342-2342-234223422342"),
+    bluetooth.UUID("23238001-2342-2342-2342-234223422342"),
     bluetooth.FLAG_WRITE
 )
 WS2812_SERVICE = (

demos/ble-ws2812-host.py

@@ -3,9 +3,11 @@ import bluepy
 import time
 import colorsys
 
+
+# Change this to the MAC of your card10
 p = bluepy.btle.Peripheral("CA:4D:10:01:ff:64")
 c = p.getCharacteristics(
-    uuid='23230301-2342-2342-2342-234223422342')[0]
+    uuid='23238001-2342-2342-2342-234223422342')[0]
 
 hue = 0
 while 1: