diff --git a/src/Modulino.h b/src/Modulino.h
index 54c00a0..dd14f5c 100644
--- a/src/Modulino.h
+++ b/src/Modulino.h
@@ -320,15 +320,30 @@ class ModulinoKnob : public Module {
     }
     return ret;
   }
-  int16_t get() {
+  bool update() {
     uint8_t buf[3];
     auto res = read(buf, 3);
     if (res == false) {
       return 0;
     }
+    get(buf);
+    return 1;
+  }
+  int16_t get(uint8_t * buf = nullptr) {
+    if (buf == nullptr) {
+      buf = (uint8_t*)malloc(3);
+      if (buf == nullptr) {
+        return 0;
+      }
+      auto res = read(buf, 3);
+      if (res == false) {
+        _pressed = false;
+        return 0;
+      }
+    }
     _pressed = (buf[2] != 0);
-    int16_t ret = buf[0] | (buf[1] << 8);
-    return ret;
+    int16_t _last_pox = buf[0] | (buf[1] << 8);
+    return _last_pox;
   }
   void set(int16_t value) {
     if (_bug_on_set) {
@@ -351,8 +366,10 @@ class ModulinoKnob : public Module {
     return 0xFF;
   }
 private:
+  int16_t _last_pox = 0;
   bool _pressed = false;
   bool _bug_on_set = false;
+
 protected:
   uint8_t match[2] = { 0x74, 0x76 };
 };