diff --git a/Examples/1_LoRa_Sensor/fdrs_sensor.h b/Examples/1_LoRa_Sensor/fdrs_sensor.h
index 7c9b973..876e436 100644
--- a/Examples/1_LoRa_Sensor/fdrs_sensor.h
+++ b/Examples/1_LoRa_Sensor/fdrs_sensor.h
@@ -30,6 +30,7 @@
 #define WIFI_PASS myPASSWORD
 #define MQTT_ADDR MQTT_BROKER
 #define BAND myBAND
+#define SF mySF 
 #else
 #define WIFI_NET "Your SSID"
 #define WIFI_PASS "Password"
@@ -154,6 +155,7 @@ void beginFDRS() {
   if (!LoRa.begin(BAND)) {
     while (1);
   }
+  LoRa.setSpreadingFactor(SF);
   DBG(" LoRa Initialized.");
 #endif
 }
diff --git a/Examples/4_UART_Gateway/4_UART_Gateway.ino b/Examples/4_UART_Gateway/4_UART_Gateway.ino
index 9acd2e3..01fb703 100644
--- a/Examples/4_UART_Gateway/4_UART_Gateway.ino
+++ b/Examples/4_UART_Gateway/4_UART_Gateway.ino
@@ -69,6 +69,7 @@ void setup() {
   if (!LoRa.begin(BAND)) {
     while (1);
   }
+  LoRa.setSpreadingFactor(SF);
   DBG(" LoRa initialized.");
 #endif
   //  UART_IF.println(sizeof(DataReading));
diff --git a/Examples/4_UART_Gateway/fdrs_config.h b/Examples/4_UART_Gateway/fdrs_config.h
index 75ad250..189c88d 100644
--- a/Examples/4_UART_Gateway/fdrs_config.h
+++ b/Examples/4_UART_Gateway/fdrs_config.h
@@ -44,6 +44,7 @@
 #define WIFI_PASS myPASSWORD
 #define MQTT_ADDR MQTT_BROKER
 #define BAND myBAND
+#define SF mySF 
 #else
 #define WIFI_NET "Your SSID"
 #define WIFI_PASS "Password"
diff --git a/Examples/4_UART_Gateway/fdrs_functions.h b/Examples/4_UART_Gateway/fdrs_functions.h
index 44770bf..fd89f89 100644
--- a/Examples/4_UART_Gateway/fdrs_functions.h
+++ b/Examples/4_UART_Gateway/fdrs_functions.h
@@ -6,7 +6,9 @@
 const uint8_t espnow_size = 250 / sizeof(DataReading);
 const uint8_t lora_size   = 256 / sizeof(DataReading);
 const uint8_t mac_prefix[] = {MAC_PREFIX};
-  esp_now_peer_info_t peerInfo;
+#if defined(ESP32)
+esp_now_peer_info_t peerInfo;
+#endif
 
 uint8_t broadcast_mac[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
 uint8_t selfAddress[] =   {MAC_PREFIX, UNIT_MAC};