shit

.gitignore

@@ -2,6 +2,9 @@
 # Compiled class file
 *.class
 
+# ---> CSV
+*.csv
+
 # Log file
 *.log
 
@@ -64,3 +67,4 @@ target/maven-archiver/pom.properties
 target/maven-status/maven-compiler-plugin/compile/default-compile/createdFiles.lst
 target/maven-status/maven-compiler-plugin/compile/default-compile/inputFiles.lst
 >>>>>>> f462d53 (yessssssssss!)
+logs/dyno_2025-06-10_19-41-50.csv

src/main/java/com/puchdyno/AnalogMeter.java

@@ -16,7 +16,7 @@ public class AnalogMeter extends JPanel {
         this.maxValue = maxValue;
         this.currentValue = 0.0;
         this.needleColor = needleColor;
-        setPreferredSize(new Dimension(200, 200));
+        setPreferredSize(new Dimension(250, 250));
     }
 
     public void setValue(double value) {
@@ -41,8 +41,9 @@ public class AnalogMeter extends JPanel {
         int centerY = getHeight() / 2;
         int radius = Math.min(centerX, centerY) - 10;
 
-        // Draw meter background
-        g2d.setColor(Color.LIGHT_GRAY);
+        // Draw meter background with gradient
+        GradientPaint gradient = new GradientPaint(0, 0, Color.LIGHT_GRAY, 0, getHeight(), Color.WHITE);
+        g2d.setPaint(gradient);
         g2d.fillOval(centerX - radius, centerY - radius, radius * 2, radius * 2);
 
         // Draw scale and ticks
@@ -73,7 +74,7 @@ public class AnalogMeter extends JPanel {
         int needleX = (int) (centerX + needleLength * Math.cos(angle));
         int needleY = (int) (centerY - needleLength * Math.sin(angle));
 
-        g2d.setStroke(new BasicStroke(3));
+        g2d.setStroke(new BasicStroke(4)); // Thicker needle
         g2d.drawLine(centerX, centerY, needleX, needleY);
         g2d.fillOval(centerX - 5, centerY - 5, 10, 10);
 
@@ -82,6 +83,6 @@ public class AnalogMeter extends JPanel {
         g2d.setFont(new Font("Arial", Font.BOLD, 16));
         FontMetrics fm = g2d.getFontMetrics();
         int labelWidth = fm.stringWidth(label);
-        g2d.drawString(label, centerX - labelWidth / 2, centerY + radius + 20);
+        g2d.drawString(label, centerX - labelWidth / 2, centerY + radius + 30); // Adjusted position
     }
 } 

src/main/java/com/puchdyno/CSVLogger.java

@@ -0,0 +1,53 @@
+package com.puchdyno;
+
+import java.io.BufferedWriter;
+import java.io.Closeable;
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+
+/**
+ * Utility class that appends each sample coming from the dyno run to a csv file.
+ * The file will be created the first time it is needed and automatically closed
+ * when the logger is closed.
+ */
+public class CSVLogger implements Closeable {
+    private static final DateTimeFormatter FILE_TS = DateTimeFormatter.ofPattern("yyyy-MM-dd_HH-mm-ss");
+    private static final DateTimeFormatter ROW_TS = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.SSS");
+
+    private final BufferedWriter writer;
+
+    /**
+     * Creates a new logger that writes to the given directory using the current timestamp as file name.
+     */
+    public CSVLogger(File directory) throws IOException {
+        if (!directory.exists() && !directory.mkdirs()) {
+            throw new IOException("Unable to create log directory " + directory);
+        }
+        File file = new File(directory, "dyno_" + LocalDateTime.now().format(FILE_TS) + ".csv");
+        boolean created = file.createNewFile();
+        writer = new BufferedWriter(new FileWriter(file, true));
+        if (created) {
+            writer.write("timestamp,rpm,ps,nm");
+            writer.newLine();
+        }
+    }
+
+    public synchronized void log(double rpm, double ps, double nm) {
+        try {
+            writer.write(String.format("%s,%.2f,%.2f,%.2f", LocalDateTime.now().format(ROW_TS), rpm, ps, nm));
+            writer.newLine();
+        } catch (IOException e) {
+            // we can't do much more than print the stacktrace at this point
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public void close() throws IOException {
+        writer.flush();
+        writer.close();
+    }
+} 

src/main/java/com/puchdyno/DynoGUI.java

@@ -18,7 +18,16 @@ public class DynoGUI extends JFrame {
     private final AnalogMeter hpMeter;
     private final XYSeries powerSeries;
     private final XYSeries torqueSeries;
+    private final XYSeries efficiencySeries;
     private final ChartPanel chartPanel;
+    private final JLabel maxLeistungLabel;
+    private final JLabel maxDrehmomentLabel;
+    private double maxLeistung = 0.0;
+    private double maxDrehmoment = 0.0;
+    private double maxLeistungRpm = 0.0;
+    private double maxLeistungNmAtHp = 0.0;
+    private double maxDrehmomentRpm = 0.0;
+    private double maxDrehmomentPsAtNm = 0.0;
 
     public DynoGUI() {
         setTitle("Puch Maxi Dyno");
@@ -27,12 +36,24 @@ public class DynoGUI extends JFrame {
         setLayout(new BorderLayout(10, 10));
 
         // Top panel: analog meters
-        JPanel meterPanel = new JPanel(new GridLayout(1, 2, 10, 10));
+        JPanel meterPanel = new JPanel(new GridLayout(1, 2, 20, 20));
         meterPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
         rpmMeter = new AnalogMeter("RPM", 12000, Color.BLUE);
         hpMeter = new AnalogMeter("Horse Power", 15, Color.RED);
-        meterPanel.add(rpmMeter);
-        meterPanel.add(hpMeter);
+
+        rpmMeter.setToolTipText("Motordrehzahl in U/min");
+        hpMeter.setToolTipText("Motorleistung in PS");
+
+        JPanel rpmWrapper = new JPanel(new BorderLayout());
+        rpmWrapper.setBorder(BorderFactory.createTitledBorder("Drehzahl [RPM]"));
+        rpmWrapper.add(rpmMeter, BorderLayout.CENTER);
+
+        JPanel hpWrapper = new JPanel(new BorderLayout());
+        hpWrapper.setBorder(BorderFactory.createTitledBorder("Leistung [PS]"));
+        hpWrapper.add(hpMeter, BorderLayout.CENTER);
+
+        meterPanel.add(rpmWrapper);
+        meterPanel.add(hpWrapper);
         add(meterPanel, BorderLayout.NORTH);
 
         // Center panel: chart and labels
@@ -46,24 +67,35 @@ public class DynoGUI extends JFrame {
 
         leistungLabel = new JLabel("Leistung: 0.00 PS");
         drehmomentLabel = new JLabel("Drehmoment: 0.00 Nm");
+        maxLeistungLabel = new JLabel("Max Leistung: 0.00 PS");
+        maxDrehmomentLabel = new JLabel("Max Drehmoment: 0.00 Nm");
 
         leistungLabel.setFont(new Font("SansSerif", Font.BOLD, 24));
         drehmomentLabel.setFont(new Font("SansSerif", Font.BOLD, 24));
+        maxLeistungLabel.setFont(new Font("SansSerif", Font.PLAIN, 14));
+        maxDrehmomentLabel.setFont(new Font("SansSerif", Font.PLAIN, 14));
 
         leistungLabel.setAlignmentX(Component.CENTER_ALIGNMENT);
         drehmomentLabel.setAlignmentX(Component.CENTER_ALIGNMENT);
+        maxLeistungLabel.setAlignmentX(Component.CENTER_ALIGNMENT);
+        maxDrehmomentLabel.setAlignmentX(Component.CENTER_ALIGNMENT);
 
         labelPanel.add(leistungLabel);
-        labelPanel.add(Box.createVerticalStrut(10));
         labelPanel.add(drehmomentLabel);
+        labelPanel.add(Box.createVerticalStrut(5));
+        labelPanel.add(maxLeistungLabel);
+        labelPanel.add(Box.createVerticalStrut(5));
+        labelPanel.add(maxDrehmomentLabel);
         centerPanel.add(labelPanel, BorderLayout.NORTH);
 
         // Data series
         powerSeries = new XYSeries("Power (PS)");
         torqueSeries = new XYSeries("Torque (Nm)");
+        efficiencySeries = new XYSeries("Efficiency");
 
         XYSeriesCollection powerDataset = new XYSeriesCollection(powerSeries);
         XYSeriesCollection torqueDataset = new XYSeriesCollection(torqueSeries);
+        XYSeriesCollection efficiencyDataset = new XYSeriesCollection(efficiencySeries);
 
         // Date for chart title
         String dateStr = LocalDate.now().format(DateTimeFormatter.ofPattern("dd.MM.yyyy"));
@@ -107,6 +139,15 @@ public class DynoGUI extends JFrame {
         plot.setDataset(1, torqueDataset);
         plot.mapDatasetToRangeAxis(1, 1);
 
+        // Efficiency axis (additional, right side 2)
+        NumberAxis effAxis = new NumberAxis("Effizienz [arb.u.]");
+        effAxis.setAutoRangeIncludesZero(false);
+        effAxis.setTickLabelFont(new Font("SansSerif", Font.PLAIN, 12));
+        effAxis.setLabelFont(new Font("SansSerif", Font.BOLD, 14));
+        plot.setRangeAxis(2, effAxis);
+        plot.setDataset(2, efficiencyDataset);
+        plot.mapDatasetToRangeAxis(2, 2);
+
         // X axis
         NumberAxis xAxis = (NumberAxis) plot.getDomainAxis();
         xAxis.setRange(0.0, 12000.0);
@@ -123,6 +164,12 @@ public class DynoGUI extends JFrame {
         torqueRenderer.setSeriesPaint(0, new Color(38, 139, 210)); // Blue
         plot.setRenderer(1, torqueRenderer);
 
+        XYLineAndShapeRenderer effRenderer = new XYLineAndShapeRenderer(false, true);
+        effRenderer.setSeriesPaint(0, new Color(133, 153, 0)); // green
+        effRenderer.setSeriesShapesVisible(0, true);
+        effRenderer.setSeriesShape(0, new java.awt.geom.Ellipse2D.Double(-4, -4, 8, 8));
+        plot.setRenderer(2, effRenderer);
+
         // Chart panel setup
         chartPanel = new ChartPanel(chart);
         chartPanel.setPreferredSize(new Dimension(800, 400));
@@ -149,6 +196,36 @@ public class DynoGUI extends JFrame {
         leistungLabel.setText(String.format("Leistung: %.2f PS", leistung));
         drehmomentLabel.setText(String.format("Drehmoment: %.2f Nm", drehmoment));
 
+        // update max hold values
+        boolean effUpdated = false;
+        if (leistung > maxLeistung) {
+            maxLeistung = leistung;
+            maxLeistungLabel.setText(String.format("Max Leistung: %.2f PS", maxLeistung));
+            maxLeistungRpm = rpm;
+            maxLeistungNmAtHp = drehmoment;
+            effUpdated = true;
+        }
+        if (drehmoment > maxDrehmoment) {
+            maxDrehmoment = drehmoment;
+            maxDrehmomentLabel.setText(String.format("Max Drehmoment: %.2f Nm", maxDrehmoment));
+            maxDrehmomentRpm = rpm;
+            maxDrehmomentPsAtNm = leistung;
+            effUpdated = true;
+        }
+
+        if (effUpdated) {
+            efficiencySeries.clear();
+            if (maxLeistungNmAtHp > 0) {
+                efficiencySeries.add(maxLeistungRpm, maxLeistung / maxLeistungNmAtHp);
+            }
+            if (maxDrehmoment > 0) {
+                double effNm = maxDrehmomentPsAtNm == 0 ? 0.0 : maxDrehmomentPsAtNm / maxDrehmoment;
+                // avoid duplicate point if same rpm
+                if (maxDrehmomentRpm != maxLeistungRpm)
+                    efficiencySeries.add(maxDrehmomentRpm, effNm);
+            }
+        }
+
         powerSeries.add(rpm, leistung);
         torqueSeries.add(rpm, drehmoment);
     }
@@ -156,6 +233,14 @@ public class DynoGUI extends JFrame {
     public void resetChart() {
         powerSeries.clear();
         torqueSeries.clear();
+        efficiencySeries.clear();
+    }
+
+    public void resetMaxHold() {
+        maxLeistung = 0.0;
+        maxDrehmoment = 0.0;
+        maxLeistungLabel.setText("Max Leistung: 0.00 PS");
+        maxDrehmomentLabel.setText("Max Drehmoment: 0.00 Nm");
     }
 
     public JFreeChart getChart() {

src/main/java/com/puchdyno/Main.java

@@ -39,6 +39,9 @@ public class Main {
     private static ScheduledExecutorService serialExecutor;
     private static BufferedReader serialReader;
 
+    private static CSVLogger csvLogger;
+    private static boolean measurementActive = false;
+
     public static void main(String[] args) {
         SwingUtilities.invokeLater(() -> {
             dynoGUI = new DynoGUI();
@@ -67,10 +70,22 @@ public class Main {
         resetChartButton.addActionListener(e -> dynoGUI.resetChart());
         controlPanel.add(resetChartButton);
 
+        JButton resetMaxButton = new JButton("Reset Max-Hold");
+        resetMaxButton.addActionListener(e -> dynoGUI.resetMaxHold());
+        controlPanel.add(resetMaxButton);
+
         JButton reconnectButton = new JButton("Reconnect Serial");
         reconnectButton.addActionListener(e -> reconnectSerial());
         controlPanel.add(reconnectButton);
 
+        JButton startMeasButton = new JButton("Start Messung");
+        startMeasButton.addActionListener(e -> startMeasurement());
+        controlPanel.add(startMeasButton);
+
+        JButton stopMeasButton = new JButton("Stop Messung");
+        stopMeasButton.addActionListener(e -> stopMeasurement());
+        controlPanel.add(stopMeasButton);
+
         dynoGUI.add(controlPanel, BorderLayout.SOUTH);
         dynoGUI.revalidate();
         dynoGUI.repaint();
@@ -144,6 +159,10 @@ public class Main {
             testDataExecutor = null;
             SwingUtilities.invokeLater(() -> {
                 dynoGUI.updateWerte(0, 0, 0); // Reset gauges
+                if (csvLogger != null) {
+                    try { csvLogger.close(); } catch (Exception ex) { ex.printStackTrace(); }
+                    csvLogger = null;
+                }
             });
         }
     }
@@ -262,6 +281,11 @@ public class Main {
             currentSerialPort = null;
         }
 
+        if (csvLogger != null) {
+            try { csvLogger.close(); } catch (Exception ex) { ex.printStackTrace(); }
+            csvLogger = null;
+        }
+
         SwingUtilities.invokeLater(() -> {
             dynoGUI.updateWerte(0, 0, 0); // Reset gauges
         });
@@ -292,6 +316,19 @@ public class Main {
 
         lastTimestamp = currentTimestamp;
         lastOmega = currentOmega;
+
+        if (measurementActive) {
+            if (csvLogger == null) {
+                try {
+                    csvLogger = new CSVLogger(new java.io.File("logs"));
+                } catch (Exception ex) {
+                    System.err.println("Could not create CSV logger: " + ex.getMessage());
+                }
+            }
+            if (csvLogger != null) {
+                csvLogger.log(rpm, leistung, drehmoment);
+            }
+        }
     }
 
     private static void processRPMData(double rpm, double forcedDeltaTime) {
@@ -306,6 +343,19 @@ public class Main {
 
         lastOmega = currentOmega;
         lastTimestamp = System.currentTimeMillis();
+
+        if (measurementActive) {
+            if (csvLogger == null) {
+                try {
+                    csvLogger = new CSVLogger(new java.io.File("logs"));
+                } catch (Exception ex) {
+                    System.err.println("Could not create CSV logger: " + ex.getMessage());
+                }
+            }
+            if (csvLogger != null) {
+                csvLogger.log(rpm, leistung, drehmoment);
+            }
+        }
     }
 
     private static double rpmToOmega(double rpm) {
@@ -340,9 +390,13 @@ public class Main {
         JButton savePdfButton = new JButton("Save as PDF");
         savePdfButton.addActionListener(e -> saveChartAsPdf(printChartPanel));
 
+        JButton savePngButton = new JButton("Save as PNG");
+        savePngButton.addActionListener(e -> saveChartAsPng(printChartPanel));
+
         JPanel controlPanel = new JPanel();
         controlPanel.add(printButton);
         controlPanel.add(savePdfButton);
+        controlPanel.add(savePngButton);
         chartFrame.add(controlPanel, BorderLayout.SOUTH);
 
         chartFrame.setLocationRelativeTo(dynoGUI);
@@ -391,4 +445,60 @@ public class Main {
             }
         }
     }
+
+    private static void saveChartAsPng(ChartPanel chartPanel) {
+        JFileChooser fileChooser = new JFileChooser();
+        fileChooser.setDialogTitle("Save Chart as PNG");
+        fileChooser.setFileFilter(new FileNameExtensionFilter("PNG Image (*.png)", "png"));
+
+        int userSelection = fileChooser.showSaveDialog(null);
+
+        if (userSelection == JFileChooser.APPROVE_OPTION) {
+            File fileToSave = fileChooser.getSelectedFile();
+            String filePath = fileToSave.getAbsolutePath();
+            if (!filePath.toLowerCase().endsWith(".png")) {
+                filePath += ".png";
+            }
+            File finalFile = new File(filePath);
+            try {
+                org.jfree.chart.ChartUtils.saveChartAsPNG(finalFile, chartPanel.getChart(), chartPanel.getWidth(), chartPanel.getHeight());
+                JOptionPane.showMessageDialog(null, "Chart saved as PNG successfully!\n" + finalFile.getAbsolutePath(), "Save Successful", JOptionPane.INFORMATION_MESSAGE);
+            } catch (Exception ex) {
+                JOptionPane.showMessageDialog(null, "Error saving chart as PNG: " + ex.getMessage(), "Save Error", JOptionPane.ERROR_MESSAGE);
+                ex.printStackTrace();
+            }
+        }
+    }
+
+    private static void startMeasurement() {
+        if (measurementActive) {
+            JOptionPane.showMessageDialog(null, "Messung läuft bereits.", "Info", JOptionPane.INFORMATION_MESSAGE);
+            return;
+        }
+        measurementActive = true;
+        dynoGUI.resetChart();
+        dynoGUI.resetMaxHold();
+        if (csvLogger != null) {
+            try { csvLogger.close(); } catch (Exception ex) { ex.printStackTrace(); }
+        }
+        try {
+            csvLogger = new CSVLogger(new java.io.File("logs"));
+        } catch (Exception ex) {
+            csvLogger = null;
+            System.err.println("CSV Logger konnte nicht erstellt werden: " + ex.getMessage());
+        }
+    }
+
+    private static void stopMeasurement() {
+        if (!measurementActive) {
+            JOptionPane.showMessageDialog(null, "Keine laufende Messung.", "Info", JOptionPane.INFORMATION_MESSAGE);
+            return;
+        }
+        measurementActive = false;
+        if (csvLogger != null) {
+            try { csvLogger.close(); } catch (Exception ex) { ex.printStackTrace(); }
+            csvLogger = null;
+        }
+        JOptionPane.showMessageDialog(null, "Messung gestoppt.", "Info", JOptionPane.INFORMATION_MESSAGE);
+    }
 }