diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/entities/AbstractPebbleMisfitActivitySample.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/entities/AbstractPebbleMisfitActivitySample.java
new file mode 100644
index 00000000..4ecde61a
--- /dev/null
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/entities/AbstractPebbleMisfitActivitySample.java
@@ -0,0 +1,70 @@
+package nodomain.freeyourgadget.gadgetbridge.entities;
+
+import nodomain.freeyourgadget.gadgetbridge.model.ActivityKind;
+
+public abstract class AbstractPebbleMisfitActivitySample extends AbstractActivitySample {
+    abstract public int getRawPebbleMisfitSample();
+
+    private transient int intensity = 0;
+    private transient int steps = 0;
+    private transient int activityKind = ActivityKind.TYPE_UNKNOWN;
+
+    private void calculate() {
+        int sample = getRawPebbleMisfitSample();
+
+        if (((sample & 0x83ff) == 0x0001) && ((sample & 0xff00) <= 0x4800)) {
+            // sleep seems to be from 0x2401 to 0x4801  (0b0IIIII0000000001) where I = intensity ?
+            intensity = (sample & 0x7c00) >>> 10;
+            // 9-18 decimal after shift
+            if (intensity <= 13) {
+                activityKind = ActivityKind.TYPE_DEEP_SLEEP;
+            } else {
+                // FIXME: this leads to too much false positives, ignore for now
+                //activityKind = ActivityKind.TYPE_LIGHT_SLEEP;
+                //intensity *= 2; // better visual distinction
+            }
+        } else {
+            if ((sample & 0x0001) == 0) { // 16-??? steps encoded in bits 1-7
+                steps = (sample & 0x00fe);
+            } else { // 0-14 steps encoded in bits 1-3, most of the time fc71 bits are set in that case
+                steps = (sample & 0x000e);
+            }
+            intensity = steps;
+            activityKind = ActivityKind.TYPE_ACTIVITY;
+        }
+    }
+
+    @Override
+    public int getSteps() {
+        calculate();
+        return steps;
+    }
+
+    @Override
+    public int getRawKind() {
+        calculate();
+        return activityKind;
+    }
+
+    @Override
+    public int getRawIntensity() {
+        calculate();
+        return intensity;
+    }
+
+    @Override
+    public void setRawKind(int kind) {
+
+    }
+
+    @Override
+    public void setRawIntensity(int intensity) {
+
+    }
+
+    @Override
+    public void setSteps(int steps) {
+
+    }
+
+}
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