diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index d06dfff5..b1cbf8fd 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -1,13 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
       package="ca.cumulonimbus.barometernetwork"
-      android:versionCode="301"
-      android:versionName="3.0.1">
+      android:versionCode="302"
+      android:versionName="3.0.2">
     <uses-sdk android:minSdkVersion="11" android:targetSdkVersion="17" />
 	<uses-permission android:name="android.permission.INTERNET" />
 	<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
 	<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 	<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
+	<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <application android:icon="@drawable/ic_launcher" 
         		 android:label="@string/app_name">
         <activity android:name="ca.cumulonimbus.barometernetwork.SettingsActivity"
diff --git a/src/ca/cumulonimbus/barometernetwork/BarometerNetworkActivity.java b/src/ca/cumulonimbus/barometernetwork/BarometerNetworkActivity.java
index a03b7301..bb337b36 100644
--- a/src/ca/cumulonimbus/barometernetwork/BarometerNetworkActivity.java
+++ b/src/ca/cumulonimbus/barometernetwork/BarometerNetworkActivity.java
@@ -462,12 +462,12 @@ private void getStoredPreferences() {
     		SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);
     		mUpdateServerAutomatically = settings.getBoolean("autoupdate", true);
     		mUpdateServerFrequency = settings.getString("autofrequency", "10 minutes");
-    		log("shared prefs: " + mUpdateServerFrequency + " " + mUpdateServerAutomatically);
+    		//log("shared prefs: " + mUpdateServerFrequency + " " + mUpdateServerAutomatically);
     		
     		// Units
     		String abbrev = settings.getString("units", "mbar"); 
     		mUnit = new Unit(abbrev);
-    		log("abbrev: "  + abbrev);
+    		//log("abbrev: "  + abbrev);
     		
     	} catch(Exception e) {
     		log(e.getMessage() + "");
@@ -494,17 +494,16 @@ public void setId() {
     	}
     }
     
-    
-    
     // Used to write a log to SD card. Not used unless logging enabled.
     public void setUpFiles() {
     	try {
 	    	File homeDirectory = getExternalFilesDir(null);
 	    	if(homeDirectory!=null) {
 	    		mAppDir = homeDirectory.getAbsolutePath();
+	    		
 	    	}
     	} catch (Exception e) {
-    		//log(e.getMessage());
+    		log(e.getMessage());
     	}
     }
     
@@ -517,7 +516,7 @@ public void setUpBarometer() {
 	    	
 	    	if(bar!=null) {
 	        	boolean running = sm.registerListener(this, bar, SensorManager.SENSOR_DELAY_NORMAL);
-	        	log(running + "");
+	        	//log(running + "");
 	        	barometerDetected = true;
 	    	} else {
 	    		barometerDetected = false;
@@ -539,14 +538,13 @@ public void setUpMap() {
         
         // Set default coordinates (centered around the user's location)
 
-        log("about to get controller");
         try {
         	MapController mc = mapView.getController();
         	LocationManager lm = (LocationManager)this.getSystemService(Context.LOCATION_SERVICE);
         	Location loc = lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
         	mc.setZoom(8);
         	if(loc.getLatitude()!=0) {
-        		log("setting center " + loc.getLatitude() + " " + loc.getLongitude());
+        		//log("setting center " + loc.getLatitude() + " " + loc.getLongitude());
         		mc.animateTo(new GeoPoint((int)(loc.getLatitude()*1E6), (int)(loc.getLongitude() * 1E6)));
         	} else {
         		log("no known last location");
@@ -586,10 +584,10 @@ public void onLocationChanged(Location location) {
 	    	    	mLatitude = latitude;
 	    	    	mLongitude = longitude;
 	    	    	if(first) {
-	    	    		log("first location start");
+	    	    		//log("first location start");
 	    	    		setUpMap();
 	    	    		loadAndShowData();
-	    	    		log("end");
+	    	    		//log("end");
 	    	    	}
     	    	} catch(Exception e) {
     	    		log("On Location change failed.");
@@ -738,7 +736,6 @@ public void addDataToMap(ArrayList<BarometerReading> list, boolean showTendencie
     	mapOverlays.clear();
     	
     	// add a bunch of coords
-    	log("starting adding total " + list.size());
     	try {
 	    	for(BarometerReading br : list) {
 	    		// log(br.getReading() + "");
@@ -772,7 +769,7 @@ public void addDataToMap(ArrayList<BarometerReading> list, boolean showTendencie
 	    } catch(Exception e) {
 	    	log("add data error: " + e.getMessage());
 	    }
-    	log("end of adddatatomap");
+    	
     }
         
     // Runnable to refresh the map. Can be called when another
@@ -811,16 +808,16 @@ public ArrayList<BarometerReading> csvToBarometerReadings(String[] readings) {
     
     // Assemble a HashMap of userIDs and tendencies. //This is the opposite of function barometerReadingToWeb in the servlet.
     public HashMap<String, String> csvToBarometerTendencies(String[] readings) {
-    	log("csv to barometer tendencies : " + readings[0] + ", " + readings.length);
+    	//log("csv to barometer tendencies : " + readings[0] + ", " + readings.length);
     	HashMap<String, String> tendencies = new HashMap<String, String>();
     	for(int i = 0; i<readings.length; i++) {
     		try {
 	    		String[] values = readings[i].split(",");
 	    		
 	    		for(String a : values) {
-	    			log(a);
+	    			//log(a);
 	    		}
-	    		log("tendency check " + values[5]);
+	    		//log("tendency check " + values[5]);
 	    		tendencies.put(values[5], values[6]); // userid, tendency
     		} catch(Exception e) {
     			// Likely, the server returned an error.
@@ -947,7 +944,7 @@ protected String doInBackground(String... arg0) {
 	    	String responseText = "";
 	    	
 	    	try {
-	    		log("DataDownload doInBackground start try block");
+	    		//log("DataDownload doInBackground start try block");
 	    		
 	    		// Instantiate the custom HttpClient
 	    		DefaultHttpClient client = new SecureHttpClient(getApplicationContext());
@@ -1010,7 +1007,7 @@ protected String doInBackground(String... arg0) {
 	    	return responseText;
 		}
 		protected void onPostExecute(String result) {
-			log("datadownload post execute " + result);
+			//log("datadownload post execute " + result);
 			processDownloadResult(result);
 		
 			mapHandler.postDelayed(refreshMap, 100);
@@ -1193,7 +1190,7 @@ public void logToFile(String text) {
 	}
 	
     public void log(String text) {
-    	//logToFile(text);
-    	//System.out.println(text);
+    	logToFile(text);
+    	System.out.println(text);
     }
 }
diff --git a/src/ca/cumulonimbus/barometernetwork/SubmitReadingService.java b/src/ca/cumulonimbus/barometernetwork/SubmitReadingService.java
index 3d53810a..b5eaca1d 100644
--- a/src/ca/cumulonimbus/barometernetwork/SubmitReadingService.java
+++ b/src/ca/cumulonimbus/barometernetwork/SubmitReadingService.java
@@ -2,6 +2,7 @@
 
 import java.io.BufferedInputStream;
 import java.io.DataInputStream;
+import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
@@ -78,6 +79,21 @@ public final class SubmitReadingService extends Service implements SensorEventLi
 	
 	private boolean waitingForReading = false;
 	
+
+    // Used to write a log to SD card. Not used unless logging enabled.
+    public void setUpFiles() {
+    	try {
+	    	File homeDirectory = getExternalFilesDir(null);
+	    	if(homeDirectory!=null) {
+	    		mAppDir = homeDirectory.getAbsolutePath();
+	    	}
+	    	log("setting up logging");
+    	} catch (Exception e) {
+    		//log(e.getMessage());
+    	}
+    }
+    
+	
 	private boolean networkOnline() {
 		try {
 			// Test connectivity before attempting to send readings
@@ -103,7 +119,7 @@ private boolean networkOnline() {
 	LocationListener locationListener;
     // Get the user's location from the location service, preferably GPS.
     public void getLocationInformation() {
-    
+    	log("get location information");
     	// get the location
     	// Acquire a reference to the system Location Manager
     	locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
@@ -121,6 +137,7 @@ public void onLocationChanged(Location location) {
 	    	    	// no changes. stop for now.
 	    	    	if(mLatitude == latitude) {
 	    	    		if (mLongitude == longitude) {
+	    	    			log("pausing location lookup");
 	    	    			locationManager.removeUpdates(locationListener);
 	    	    		}
 	    	    	}
@@ -163,7 +180,6 @@ public void setUpBarometer() {
 	    	if(bar!=null) {
 	    		barometerReadingsActive = sm.registerListener(this, bar, SensorManager.SENSOR_DELAY_UI);
 
-	    		log("bar is not null, listening " + barometerReadingsActive);
 	    	} else {
 	    		log("bar is null");
 	    	}
@@ -302,7 +318,6 @@ protected Long doInBackground(String... arg0) {
 	    		try {
 	    			log("offline. adding to queue " + mReading + " of size " + submitList.size());
 	    			submitList.add(br);
-	    			log("added to queue");
 	    		} catch(Exception e) {
 	    			log(e.getMessage());
 	    		}
@@ -323,7 +338,7 @@ protected void onPostExecute(Long result) {
     
     private Runnable mWaitForBarometer = new Runnable() {
     	public void run() {
-    		log("rs attempt: " + mLatitude + " " + mLongitude + ": " + mReading);
+    		//log("rs attempt: " + mLatitude + " " + mLongitude + ": " + mReading);
     		new ReadingSender().execute("");
     	}
     };
@@ -337,7 +352,7 @@ public void sendBarometerReading() {
 	    	setId();
 	    	
 	    	if(mReading == 0.0) {
-	    		log("active barometer: " + barometerReadingsActive);
+	    		//log("active barometer: " + barometerReadingsActive);
 	    	} else {
 				log("rs attempt: " + mLatitude + " " + mLongitude + ": " + mReading);
 				new ReadingSender().execute("");
@@ -396,8 +411,8 @@ public void logToFile(String text) {
 	}
 	
     public void log(String text) {
-    	//System.out.println(text);
-    	//logToFile(text);
+    	System.out.println(text);
+    	logToFile(text);
     }
 	
 	private long convertSettingsTextToSeconds(String text) {
@@ -451,19 +466,6 @@ public void onDestroy() {
 		super.onDestroy();
 	}
 
-	@Override
-	public void onStart(Intent intent, int startId) {
-		// TODO Auto-generated method stub
-		//System.out.println("on start submitreadingservice");
-		System.out.println("on start");
-		try {
-			//sendDataPeriodically();
-		} catch(Exception e) {
-			System.out.println(e.getMessage());
-		}
-		super.onStart(intent, startId);
-	}
-
 	@Override
 	public boolean onUnbind(Intent intent) {
 		// TODO Auto-generated method stub
@@ -481,11 +483,7 @@ public boolean onUnbind(Intent intent) {
 	public int onStartCommand(Intent intent, int flags, int startId) {
 		log("on start command");
 		try {
-			//mAppDir = intent.getStringExtra("appdir");
-		} catch(Exception e) {
-			
-		}
-		try {
+			setUpFiles(); // start logs
 			setUpDatabase();
 		} catch(Exception e) {
 			
diff --git a/src/ca/cumulonimbus/barometernetwork/WidgetButtonService.java b/src/ca/cumulonimbus/barometernetwork/WidgetButtonService.java
index 36251692..95e8255a 100644
--- a/src/ca/cumulonimbus/barometernetwork/WidgetButtonService.java
+++ b/src/ca/cumulonimbus/barometernetwork/WidgetButtonService.java
@@ -2,12 +2,16 @@
 
 import java.io.BufferedInputStream;
 import java.io.DataInputStream;
+import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
 import java.io.IOException;
+import java.io.OutputStream;
 import java.text.DecimalFormat;
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.Date;
 
 import android.app.Service;
 import android.appwidget.AppWidgetManager;
@@ -44,11 +48,13 @@ public class WidgetButtonService extends Service implements SensorEventListener
 	
 	private String mAppDir = "";
 	
+	
+	
 	public void startListening() {
 		try {
 	    	sm = (SensorManager) getApplicationContext().getSystemService(Context.SENSOR_SERVICE);
 	    	Sensor bar = sm.getDefaultSensor(Sensor.TYPE_PRESSURE);
-	    	
+	    	log("widget start listening pressure");
 	    	if(bar!=null) {
 	        	running = sm.registerListener(this, bar, SensorManager.SENSOR_DELAY_NORMAL);
 	        	//Toast.makeText(getApplicationContext(), "starting listener", Toast.LENGTH_SHORT).show();
@@ -113,6 +119,8 @@ public void update(Intent intent, double reading) {
 					recents = dbAdapter.fetchRecentReadings(5); // the last few hours
 					String tendency = ScienceHandler.findTendency(recents);
 					
+					log("widget getting tendency, updating and sending");
+					
 					if(tendency.contains("rising")) {
 						remoteView.setInt(R.id.widget_tendency_image_up, "setVisibility", View.VISIBLE);
 						remoteView.setInt(R.id.widget_tendency_image_down, "setVisibility", View.INVISIBLE);
@@ -262,6 +270,7 @@ public void onDestroy() {
 	public void onStart(Intent intent, int startId) {
 		try {
 			mAppDir = intent.getStringExtra("appdir"); 
+			
 		} catch(Exception e) {
 			
 		}
@@ -282,13 +291,15 @@ public void onAccuracyChanged(Sensor sensor, int accuracy) {
 		// TODO Auto-generated method stub
 		
 	}
+	
+	
 
 	@Override
 	public void onSensorChanged(SensorEvent event) {
 		switch (event.sensor.getType()) {
 		case Sensor.TYPE_PRESSURE: 
 			mReading = event.values[0];
-			//Toast.makeText(getApplicationContext(), mReading + "", Toast.LENGTH_SHORT).show();
+			log("widget sensor changed " + mReading + " and unregistering");
 			update(new Intent(), mReading);
 			sm.unregisterListener(this);
 			mReading = 0.0;
@@ -297,4 +308,25 @@ public void onSensorChanged(SensorEvent event) {
 		
 	}
 
+	// Log data to SD card for debug purposes.
+	// To enable logging, ensure the Manifest allows writing to SD card.
+	public void logToFile(String text) {
+		try {
+			OutputStream output = new FileOutputStream(mAppDir + "/log.txt", true);
+			String logString = (new Date()).toString() + ": " + text + "\n";
+			output.write(logString.getBytes());
+			output.close();
+			
+		} catch(FileNotFoundException e) {
+			
+		} catch(IOException ioe) {
+			
+		}
+	}
+	
+    public void log(String text) {
+    	System.out.println(text);
+    	logToFile(text);
+    }
+	
 }