diff --git a/main.c b/main.c
index 8b0c8835..8164df6d 100644
--- a/main.c
+++ b/main.c
@@ -22,6 +22,22 @@
 #include "main.h"
 
 int main(int argc, char * argv[]) {
+
+  char resbuffer[1000];
+  const char testStr[] = "cat /proc/cpuinfo | grep 'Revision' | awk '{print $3}' | sed 's/^1000//' | grep '902120'";
+  FILE *file_test = sopen(testStr);  // see if Pi Zero 2  
+  fgets(resbuffer, 1000, file_test);
+//  fprintf(stderr, "test result: %s\n", resbuffer);
+  fclose(file_test);	
+  
+//  fprintf(stderr, " %x ", resbuffer[0]);
+//  fprintf(stderr, " %x ", resbuffer[1]);	
+  if (resbuffer[1] != 0) 
+  {
+    sleep(5);  // try sleep at start to help boot
+    voltageThreshold = 3.7;
+    printf("Pi Zero 2 detected");
+  }
 	
   printf("\n\nCubeSatSim v1.1 starting...\n\n");
 	
@@ -723,6 +739,8 @@ int main(int argc, char * argv[]) {
     fprintf(stderr, "INFO: Battery voltage: %5.2f V  Threshold %5.2f V Current: %6.1f mA Threshold: %6.1f mA\n", batteryVoltage, voltageThreshold, batteryCurrent, currentThreshold);
     #endif
 //    if ((batteryVoltage > 1.0) && (batteryVoltage < batteryThreshold)) // no battery INA219 will give 0V, no battery plugged into INA219 will read < 1V
+
+/**/
     if ((batteryCurrent > currentThreshold) && (batteryVoltage < voltageThreshold) && !sim_mode) // currentThreshold ensures that this won't happen when running on DC power.
     {
       fprintf(stderr, "Battery voltage too low: %f V - shutting down!\n", batteryVoltage);
@@ -745,7 +763,7 @@ int main(int argc, char * argv[]) {
       pclose(file6);
       sleep(10);
     }
-
+/**/
     //  sleep(1);  // Delay 1 second
     ctr = 0;
     #ifdef DEBUG_LOGGING
diff --git a/telem.c b/telem.c
index eff6ba50..6c60b0fa 100644
--- a/telem.c
+++ b/telem.c
@@ -14,60 +14,12 @@ int main(int argc, char *argv[]) {
       debug = ON;
     }
   }
-  wiringPiSetup ();
-		
-  printf("\n");
-	
-    pinMode (2, INPUT);
-    pullUpDnControl (2, PUD_UP);
-
-    if (digitalRead(2) != HIGH)
-    {
-	  printf("vB3 with TFB Present\n");
-  	  map[BUS] = MINUS_Z;
-  	  map[BAT] = BUS;
-  	  map[PLUS_Z] = BAT;
-  	  map[MINUS_Z] = PLUS_Z;
-	  snprintf(busStr, 10, "%d %d", test_i2c_bus(1), test_i2c_bus(0));	    
-     } 
-    else
-    {
-  	pinMode (3, INPUT);
-  	pullUpDnControl (3, PUD_UP);
 
-  	if (digitalRead(3) != HIGH)
-  	{
-	  printf("vB4 Present\n");
-	  map[BAT] = BUS;
-	  map[BUS] = BAT;
-	  snprintf(busStr, 10, "%d %d", test_i2c_bus(1), test_i2c_bus(0));		
- // 	  strcpy(busStr,"1 0");
-  	}
-	else
-	{
-		pinMode (26, INPUT);
-  		pullUpDnControl (26, PUD_UP);
-
-  		if (digitalRead(26) != HIGH)
-  		{
- // 			if (debug == ON)
-			printf("CubeSatSim v1.1 INA219 Voltage and Current Telemetry\n");  
-			map[MINUS_X] = MINUS_Y;
-			map[PLUS_Z] = MINUS_X;	
-			map[MINUS_Y] = PLUS_Z;			
-			snprintf(busStr, 10, "%d %d", test_i2c_bus(1), test_i2c_bus(3));
-		}
-		else
-		{
-			printf("VB3 Present\n");
-  			map[BUS] = MINUS_Z;
-  			map[BAT] = BUS;
-  			map[PLUS_Z] = BAT;
-  			map[MINUS_Z] = PLUS_Z;
-			snprintf(busStr, 10, "%d %d", test_i2c_bus(1), test_i2c_bus(0));
-	}
-      }
-    }	
+  printf("CubeSatSim v1.1 INA219 Voltage and Current Telemetry\n");  
+  map[MINUS_X] = MINUS_Y;
+  map[PLUS_Z] = MINUS_X;	
+  map[MINUS_Y] = PLUS_Z;			
+  snprintf(busStr, 10, "%d %d", test_i2c_bus(1), test_i2c_bus(3));
 	
 //  Reading I2C voltage and current sensors
 //   printf("Starting\n");
@@ -127,7 +79,8 @@ int main(int argc, char *argv[]) {
   printf("-Y  | % 4.2f V % 5.0f mA \n", voltage[map[MINUS_Y]], current[map[MINUS_Y]]);
   printf("-Z  | % 4.2f V % 5.0f mA \n",  voltage[map[MINUS_Z]], current[map[MINUS_Z]]);
   printf("Bat | % 4.2f V % 5.0f mA \n", voltage[map[BAT]], current[map[BAT]]);
-  printf("Bus | % 4.2f V % 5.0f mA \n\n", voltage[map[BUS]], current[map[BUS]]);		
+  printf("Bus | % 4.2f V % 5.0f mA \n\n", voltage[map[BUS]], current[map[BUS]]);
+  fclose(file1);
 
   return 0;
 }
@@ -141,7 +94,7 @@ int test_i2c_bus(int bus)
 	strcat (busDev, busS);	
 //	printf("Bus Dev String: %s \n", busDev);
 	
-	if (access(busDev, W_OK | R_OK) >= 0)  {   // Test if I2C Bus is present			
+	if (access(busDev, W_OK | R_OK) >= 0)  {   // Test if I2C Bus is present
 //	  	printf("bus is present\n\n");	    
     	  	char result[128];		
     	  	const char command_start[] = "timeout 10 i2cdetect -y ";
@@ -161,7 +114,7 @@ int test_i2c_bus(int bus)
     	 	{	
     	 		printf("ERROR: %d bus has a problem \n  Check I2C wiring and pullup resistors \n", bus);
 			output = -1;
-    		}													
+    		}								
 	} else
 	{
     	 	printf("ERROR: %d bus has a problem \n  Check software to see if enabled \n", bus);