diff --git a/src/energenie/drv/radio_rpi.so b/src/energenie/drv/radio_rpi.so
index 0129587..e7b100f 100755
--- a/src/energenie/drv/radio_rpi.so
+++ b/src/energenie/drv/radio_rpi.so
Binary files differ
diff --git a/src/energenie/radio2.py b/src/energenie/radio2.py
index da3c2dc..1d73eb7 100644
--- a/src/energenie/radio2.py
+++ b/src/energenie/radio2.py
@@ -16,8 +16,8 @@
 #TODO: Should really add parameter validation here, so that C code doesn't have to.
 #although it will be faster in C (C could be made optional, like an assert?)
 
-##LIBNAME = "drv/radio_rpi.so"
-LIBNAME = "drv/radio_mac.so" # testing
+LIBNAME = "drv/radio_rpi.so"
+##LIBNAME = "drv/radio_mac.so" # testing
 
 import time
 import ctypes
diff --git a/src/switch.py b/src/switch.py
index f425138..062f245 100644
--- a/src/switch.py
+++ b/src/switch.py
@@ -99,7 +99,7 @@
     OpenThings.init(Devices.CRYPT_PID)
 
     # Seed the registry with a known device, to simplify tx-only testing
-    SENSOR_ID = 0x6AB # TODO capture this from a known device before testing
+    SENSOR_ID = 0x68B # captured from a real device
     device_header = OpenThings.alterMessage(Messages.REGISTERED_SENSOR,
         header_mfrid     = Devices.MFRID,
         header_productid = Devices.PRODUCTID_MIHO005, # adaptor plus