diff --git a/src/configuration.h b/main/configuration.h
similarity index 100%
rename from src/configuration.h
rename to main/configuration.h
diff --git a/src/credentials.h b/main/credentials.h
similarity index 100%
rename from src/credentials.h
rename to main/credentials.h
diff --git a/src/fonts.h b/main/fonts.h
similarity index 100%
rename from src/fonts.h
rename to main/fonts.h
diff --git a/src/gps.ino b/main/gps.ino
similarity index 100%
rename from src/gps.ino
rename to main/gps.ino
diff --git a/src/images.h b/main/images.h
similarity index 100%
rename from src/images.h
rename to main/images.h
diff --git a/src/lmic_project_config.h b/main/lmic_project_config.h
similarity index 100%
rename from src/lmic_project_config.h
rename to main/lmic_project_config.h
diff --git a/src/main.ino b/main/main.ino
similarity index 98%
rename from src/main.ino
rename to main/main.ino
index 8966a96..328684b 100644
--- a/src/main.ino
+++ b/main/main.ino
@@ -51,7 +51,7 @@ void send() {
     #endif
 
     ttn_cnt(count);
-    ttn_send(txBuffer, LORAWAN_PORT, confirmed);
+    ttn_send(txBuffer, sizeof(txBuffer), LORAWAN_PORT, confirmed);
 
     count++;
 }
diff --git a/src/screen.ino b/main/screen.ino
similarity index 100%
rename from src/screen.ino
rename to main/screen.ino
diff --git a/src/sleep.ino b/main/sleep.ino
similarity index 100%
rename from src/sleep.ino
rename to main/sleep.ino
diff --git a/src/ttn.ino b/main/ttn.ino
similarity index 98%
rename from src/ttn.ino
rename to main/ttn.ino
index 1ee3aaa..84af1de 100644
--- a/src/ttn.ino
+++ b/main/ttn.ino
@@ -201,7 +201,7 @@ void ttn_cnt(unsigned char num) {
     LMIC_setSeqnoUp(num);
 }
 
-void ttn_send(uint8_t * data, uint8_t port, bool confirmed){
+void ttn_send(uint8_t * data, uint8_t data_size, uint8_t port, bool confirmed){
     // Check if there is not a current TX/RX job running
     if (LMIC.opmode & OP_TXRXPEND) {
         _ttn_callback(EV_PENDING);
@@ -210,7 +210,7 @@ void ttn_send(uint8_t * data, uint8_t port, bool confirmed){
 
     // Prepare upstream data transmission at the next possible time.
     // Parameters are port, data, length, confirmed
-    LMIC_setTxData2(port, data, sizeof(data), confirmed ? 1 : 0);
+    LMIC_setTxData2(port, data, data_size, confirmed ? 1 : 0);
             
     _ttn_callback(EV_QUEUED);
 }