diff --git a/Makefile b/Makefile
index b349e8a07..57c6053d8 100644
--- a/Makefile
+++ b/Makefile
@@ -96,10 +96,18 @@ apdu:
 blinkt:
 	$(MAKE) LEGACY=true -C apps $@
 
+.PHONY: blinkt-pipeline
+blinkt-pipeline:
+	$(MAKE) LEGACY=true BUILD=pipeline -C apps blinkt
+
 .PHONY: blinkt6
 blinkt6:
 	$(MAKE) LEGACY=true BACDL=bip6 -C apps blinkt
 
+.PHONY: blinkt6-pipeline
+blinkt6-pipeline:
+	$(MAKE) LEGACY=true BACDL=bip6 BUILD=pipeline -C apps blinkt
+
 .PHONY: create-object
 create-object:
 	$(MAKE) -s -C apps $@
diff --git a/apps/blinkt/blinkt.c b/apps/blinkt/blinkt.c
index ff948545d..a37722d5e 100644
--- a/apps/blinkt/blinkt.c
+++ b/apps/blinkt/blinkt.c
@@ -26,7 +26,7 @@ static int Blinkt_Pi;
 #define PI_OUTPUT 1
 #define gpio_write(a, b, c) printf("gpio_write(%d, %d, %d)\n", a, b, c)
 #define set_mode(a, b, c) printf("set_mode(%d, %d, %d)\n", a, b, c)
-#define pigpio_start(a, b) printf("pigpio_start(%s, %s)\n", a, b)
+#define pigpio_start(a, b) printf("pigpio_start(%p, %p)\n", a, b)
 #define pigpio_stop(a) printf("pigpio_stop(%d)\n", a)
 #else
 #include <pigpiod_if2.h>
diff --git a/apps/blinkt/main.c b/apps/blinkt/main.c
index c7e299907..50a206e90 100644
--- a/apps/blinkt/main.c
+++ b/apps/blinkt/main.c
@@ -62,6 +62,8 @@ static struct mstimer BACnet_TSM_Timer;
 static struct mstimer BACnet_Address_Timer;
 /* task timer for object functionality */
 static struct mstimer BACnet_Object_Timer;
+/* observer for WriteGroup notifications */
+static BACNET_WRITE_GROUP_NOTIFICATION Write_Group_Notification;
 
 /** Initialize the handlers we will utilize.
  * @see Device_Init, apdu_set_unconfirmed_handler, apdu_set_confirmed_handler
@@ -99,6 +101,8 @@ static void Init_Service_Handlers(void)
         SERVICE_CONFIRMED_SUBSCRIBE_COV, handler_cov_subscribe);
     apdu_set_unconfirmed_handler(
         SERVICE_UNCONFIRMED_COV_NOTIFICATION, handler_ucov_notification);
+    apdu_set_unconfirmed_handler(
+        SERVICE_UNCONFIRMED_WRITE_GROUP, handler_write_group);
     /* handle communication so we can shutup when asked */
     apdu_set_confirmed_handler(
         SERVICE_CONFIRMED_DEVICE_COMMUNICATION_CONTROL,
@@ -291,6 +295,8 @@ static void bacnet_output_init(void)
         Color_Temperature_Write_Value_Handler);
     Lighting_Output_Write_Present_Value_Callback_Set(
         Lighting_Output_Write_Value_Handler);
+    Write_Group_Notification.callback = Channel_Write_Group;
+    handler_write_group_notification_add(&Write_Group_Notification);
 }
 
 /**