diff --git a/Code/thermal_printer/etc/systemd/system/devterm-printer.service b/Code/thermal_printer/etc/systemd/system/devterm-printer.service
index 267a13b..51d544c 100644
--- a/Code/thermal_printer/etc/systemd/system/devterm-printer.service
+++ b/Code/thermal_printer/etc/systemd/system/devterm-printer.service
@@ -4,6 +4,8 @@ After=devterm-socat
 
 [Service]
 Type=simple
+StandardOutput=/tmp/devterm_printer.log
+StandardError=/tmp/devterm_printer.err.log
 ExecStart=/usr/local/bin/devterm_thermal_printer.elf
 
 
diff --git a/Code/thermal_printer/printer.c b/Code/thermal_printer/printer.c
index d3ebf00..3cc48d3 100644
--- a/Code/thermal_printer/printer.c
+++ b/Code/thermal_printer/printer.c
@@ -60,7 +60,7 @@ uint8_t IsPaper()
     if(ASK4PAPER==LOW) // * LOW is what we want**
     {status = IS_PAPER;}
     else
-    {status = NO_PAPER;printf("Error:NO PAPER\n");}
+    {status = NO_PAPER; PRINTF("Error:NO PAPER\n"); }
     DISABLE_PEM;
   }else {
     status = printer_vps_last_status;
@@ -69,7 +69,7 @@ uint8_t IsPaper()
   
   tmp = temperature();
   if (tmp >= HOT){
-    printf("Printer too Hot\n");
+    PRINTF("Printer too Hot\n");
     status |= HOT_PRINTER;
   }
   
@@ -113,7 +113,7 @@ uint8_t header_init() {
   SPI.begin(); //Initialize the SPI_1 port.
   */
   if (!wiringPiSPISetup (0,  4500000 )) {
-	  printf("SPI init failed,exiting...\n");
+	  PRINTF("SPI init failed,exiting...\n");
   }
   
   /*
diff --git a/Code/thermal_printer/utils.h b/Code/thermal_printer/utils.h
index 27e21be..605b11c 100644
--- a/Code/thermal_printer/utils.h
+++ b/Code/thermal_printer/utils.h
@@ -13,6 +13,8 @@
 
 #define ALINE printf("\n");
 
+#define PRINTF(...) { printf(__VA_ARGS__);fflush(stdout);}
+
 void delayus(unsigned int _us);
 
 uint8_t invert_bit(uint8_t a);