diff --git a/.ci/kontinuum.json b/.ci/kontinuum.json
new file mode 100644
index 0000000..4d239f0
--- /dev/null
+++ b/.ci/kontinuum.json
@@ -0,0 +1,4 @@
+{
+"type":"android",
+"stages":["lint","test","assemble"]
+}
diff --git a/build.gradle b/build.gradle
index 7bfdc4b..9c50ae9 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,10 +1,10 @@
 buildscript {
     repositories {
-        mavenCentral()
+        jcenter()
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.5.0'
+        classpath 'com.android.tools.build:gradle:2.3.3'
     }
 }
 
@@ -15,6 +15,7 @@ repositories {
 }
 
 dependencies {
+    compile 'com.androidplot:androidplot-core:0.6.1'
     compile 'com.android.support:support-v4:20.0.0'
     compile 'com.actionbarsherlock:actionbarsherlock:4.4.0@aar'
     compile 'com.mcxiaoke.viewpagerindicator:library:2.4.1@aar'
@@ -33,6 +34,13 @@ dependencies {
 
 android {
     compileSdkVersion 23
-    buildToolsVersion '23.0.3'
-    //useLibrary 'org.apache.http.legacy'
+    buildToolsVersion '25.0.2'
+
+    lintOptions {
+          checkReleaseBuilds false
+          // Or, if you prefer, you can continue to check for errors in release builds,
+          // but continue the build even when errors are found:
+          abortOnError false
+    }
+
 }
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 667288a..ffe60b7 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 082cb42..7c4dc56 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Sat Mar 26 23:25:43 CET 2016
+#Sat Feb 03 18:49:27 CET 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.10-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.5-all.zip
diff --git a/gradlew b/gradlew
index 91a7e26..cccdd3d 100755
--- a/gradlew
+++ b/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -6,20 +6,38 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -30,6 +48,7 @@ die ( ) {
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,31 +59,11 @@ case "`uname`" in
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# For Cygwin, ensure paths are in UNIX format before anything is touched.
-if $cygwin ; then
-    [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
-fi
-
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >&-
-APP_HOME="`pwd -P`"
-cd "$SAVED" >&-
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -90,7 +89,7 @@ location of your Java installation."
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
@@ -114,6 +113,7 @@ fi
 if $cygwin ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath
     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
index 8a0b282..f955316 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell
 if "%OS%"=="Windows_NT" setlocal
 
-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS=
-
 set DIRNAME=%~dp0
 if "%DIRNAME%" == "" set DIRNAME=.
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
 @rem Find java.exe
 if defined JAVA_HOME goto findJavaFromJavaHome
 
@@ -46,10 +46,9 @@ echo location of your Java installation.
 goto fail
 
 :init
-@rem Get command-line arguments, handling Windowz variants
+@rem Get command-line arguments, handling Windows variants
 
 if not "%OS%" == "Windows_NT" goto win9xME_args
-if "%@eval[2+2]" == "4" goto 4NT_args
 
 :win9xME_args
 @rem Slurp the command line arguments.
@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute
 
 set CMD_LINE_ARGS=%*
-goto execute
-
-:4NT_args
-@rem Get arguments from the 4NT Shell from JP Software
-set CMD_LINE_ARGS=%$
 
 :execute
 @rem Setup the command line
diff --git a/libs/androidplot-core-0.5.2.jar b/libs/androidplot-core-0.5.2.jar
deleted file mode 100644
index 3d06530..0000000
Binary files a/libs/androidplot-core-0.5.2.jar and /dev/null differ
diff --git a/src/main/java/org/c_base/c_beam/activity/CcorderActivity.java b/src/main/java/org/c_base/c_beam/activity/CcorderActivity.java
index 20f90f7..fcee237 100644
--- a/src/main/java/org/c_base/c_beam/activity/CcorderActivity.java
+++ b/src/main/java/org/c_base/c_beam/activity/CcorderActivity.java
@@ -12,8 +12,6 @@
 import android.graphics.PixelFormat;
 import android.hardware.Camera;
 import android.hardware.Camera.Parameters;
-import android.hardware.Camera.PictureCallback;
-import android.hardware.Camera.ShutterCallback;
 import android.hardware.Sensor;
 import android.hardware.SensorEvent;
 import android.hardware.SensorEventListener;
@@ -43,12 +41,11 @@
 import android.widget.ListView;
 import android.widget.TextView;
 import android.widget.ToggleButton;
-import android.util.Log;
-
 import com.actionbarsherlock.view.Menu;
 import com.actionbarsherlock.view.MenuItem;
 import com.androidplot.xy.XYPlot;
-
+import java.io.IOException;
+import java.util.ArrayList;
 import org.c_base.c_beam.R;
 import org.c_base.c_beam.Settings;
 import org.c_base.c_beam.ccorder.DrawOnTop;
@@ -57,9 +54,6 @@
 import org.c_base.c_beam.ccorder.TouchSurfaceView;
 import org.c_base.c_beam.domain.Ring;
 
-import java.io.IOException;
-import java.util.ArrayList;
-
 @SuppressLint("NewApi")
 public class CcorderActivity extends C_beamActivity implements Callback, SensorEventListener {
     private static final String TAG = "CCorderActivity";
@@ -106,33 +100,12 @@ public class CcorderActivity extends C_beamActivity implements Callback, SensorE
 
     ArrayList<Sensor> sensors = new ArrayList<Sensor>();
 
-    ShutterCallback shutter = new ShutterCallback() {
-        @Override
-        public void onShutter() {
-            // No action to be perfomed on the Shutter callback.
-        }
-    };
-    PictureCallback raw = new PictureCallback() {
-        @Override
-        public void onPictureTaken(byte[] data, Camera camera) {
-            // No action taken on the raw data. Only action taken on jpeg data.
-        }
-    };
-
-    PictureCallback jpeg = new PictureCallback() {
-        @Override
-        public void onPictureTaken(byte[] data, Camera camera) {
-            // No action taken on the jpeg data yet.
-        }
-    };
     private String[] dimensionArrayXYZ = {"X", "Y", "Z"};
     private String[] dimensionArrayLux = {"/ lux"};
     private String[] dimensionArrayTemp = {"°K"};
     private ToggleButton toggleButtonSensors;
     private ToggleButton toggleButtonScanner;
     private ToggleButton toggleButtonCam;
-    private boolean mustRelease = false;
-    private boolean previewOn = false;
     private SharedPreferences sharedPref;
     private Runnable updateSlowPlotsCallbacks = new Runnable() {
         @Override
diff --git a/src/main/java/org/c_base/c_beam/ccorder/SensorPlot.java b/src/main/java/org/c_base/c_beam/ccorder/SensorPlot.java
index fc7d601..c270308 100644
--- a/src/main/java/org/c_base/c_beam/ccorder/SensorPlot.java
+++ b/src/main/java/org/c_base/c_beam/ccorder/SensorPlot.java
@@ -2,11 +2,10 @@
 
 import android.graphics.Color;
 import android.hardware.SensorEvent;
-import com.androidplot.Plot;
 import com.androidplot.xy.LineAndPointFormatter;
+import com.androidplot.xy.PointLabelFormatter;
 import com.androidplot.xy.SimpleXYSeries;
 import com.androidplot.xy.XYPlot;
-
 import java.util.ArrayList;
 
 public class SensorPlot {
@@ -37,7 +36,7 @@ public SensorPlot(String sensorName, String[] dimensions, XYPlot plot) {
             for (int j=0; j<100; j++) {
                 series[i].addLast(null, 0);
             }
-            LineAndPointFormatter format = new LineAndPointFormatter(formatColors[i][0], null, formatColors[i][1]);
+            LineAndPointFormatter format = new LineAndPointFormatter(formatColors[i][0], null, formatColors[i][1], new PointLabelFormatter());
             format.getFillPaint().setAlpha(150);
             plot.addSeries(series[i], format);
         }