diff --git a/example/embedded/spp_and_le_counter.c b/example/embedded/spp_and_le_counter.c
index 00dbba5c9..1d0649537 100644
--- a/example/embedded/spp_and_le_counter.c
+++ b/example/embedded/spp_and_le_counter.c
@@ -77,6 +77,7 @@ static uint8_t   spp_service_buffer[150];
 static int       le_notification_enabled;
 
 // THE Couner
+static timer_source_t heartbeat;
 static int  counter = 0;
 static char counter_string[30];
 static int  counter_string_len;
@@ -291,7 +292,6 @@ int btstack_main(void)
     att_server_init(profile_data, att_read_callback, att_write_callback);    
     att_dump_attributes();
     // set one-shot timer
-    timer_source_t heartbeat;
     heartbeat.process = &heartbeat_handler;
     run_loop_set_timer(&heartbeat, HEARTBEAT_PERIOD_MS);
     run_loop_add_timer(&heartbeat);
diff --git a/example/embedded/spp_counter.c b/example/embedded/spp_counter.c
index 13e177fb8..caa0f6c5a 100644
--- a/example/embedded/spp_counter.c
+++ b/example/embedded/spp_counter.c
@@ -67,7 +67,7 @@
 
 static uint16_t  rfcomm_channel_id;
 static uint8_t   spp_service_buffer[150];
-
+static timer_source_t heartbeat;
 
 static void packet_handler (void * connection, uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
     bd_addr_t event_addr;
@@ -200,7 +200,6 @@ int btstack_main(int argc, const char * argv[]){
     hci_ssp_set_io_capability(SSP_IO_CAPABILITY_DISPLAY_YES_NO);
 
     // set one-shot timer
-    timer_source_t heartbeat;
     heartbeat.process = &heartbeat_handler;
     run_loop_set_timer(&heartbeat, HEARTBEAT_PERIOD_MS);
     run_loop_add_timer(&heartbeat);
diff --git a/example/embedded/spp_flowcontrol.c b/example/embedded/spp_flowcontrol.c
index 2e861ae10..c81b24782 100644
--- a/example/embedded/spp_flowcontrol.c
+++ b/example/embedded/spp_flowcontrol.c
@@ -65,6 +65,7 @@ static uint8_t   rfcomm_channel_nr = 1;
 static uint16_t  rfcomm_channel_id;
 static uint8_t   rfcomm_send_credit = 0;
 static uint8_t   spp_service_buffer[150];
+static timer_source_t heartbeat;
 
 // Bluetooth logic
 static void packet_handler (void * connection, uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
@@ -178,7 +179,6 @@ int btstack_main(int argc, const char * argv[]){
     sdp_register_service_internal(NULL, service_record_item);
     
     // set one-shot timer
-    timer_source_t heartbeat;
     heartbeat.process = &heartbeat_handler;
     run_loop_set_timer(&heartbeat, HEARTBEAT_PERIOD_MS);
     run_loop_add_timer(&heartbeat);