diff --git a/cpp/ui/ncurses/hw/hwcurses.cpp b/cpp/ui/ncurses/hw/hwcurses.cpp
index 4fcf17f..3a389cd 100644
--- a/cpp/ui/ncurses/hw/hwcurses.cpp
+++ b/cpp/ui/ncurses/hw/hwcurses.cpp
@@ -20,45 +20,56 @@
   centralize into event sender and subscriber
 */
 
-/*
-  find a way to eject timer
-  find a way to group timers into an object
-*/
-
-struct mysecondsdisplay {
-  int intervalcount = 10;
-  void myupdatedisplay() {
-    intervalcount -= 1;
-    mvprintw(intervalcount, intervalcount, "hello %d", intervalcount);
-    if (intervalcount < 1) {
-      intervalcount = 10;
-    }
-  }
-};
 
 // calls callbackfunc on specified interval based on accumulated deltatime
 class timer {
+private:
+  double accumulator = 0;
+  int triggeramount = 0;
+  double time_interval = 1; // only display every 1 seconds
+ 
 public:
   std::string name;
-  std::function<void()> callbackfunc;
+  int triggercounter = 0;
+  bool is_infinite = false;
+  std::function<void(const timer&)> callbackfunc;
+  bool is_expired = false;
 
-  timer(std::string name, size_t interval_input, std::function<void()> callback)
-      : name(name), callbackfunc(callback), time_interval(interval_input) {}
+  //infinite timer
+  timer(std::string name_input, size_t interval_input,
+        std::function<void(const timer &)> callback_input)
+      : time_interval(interval_input), name(name_input), is_infinite(true),
+        callbackfunc(callback_input) {}
+
+  //limited timer
+  timer(std::string name, size_t interval_input, int triggeramount,
+        std::function<void(const timer &)> callback)
+      : triggeramount(triggeramount), time_interval(interval_input), name(name),
+        callbackfunc(callback) {}
 
   // callbackfunc once enough time has accumulated
   void updatetime(double DeltaTime) {
     accumulator += DeltaTime;
-    if (accumulator >= time_interval) {
-      accumulator -= time_interval;
-      callbackfunc();
+    if (!is_expired) {
+      if (accumulator >= time_interval) {
+        callbackfunc(*this);
+        accumulator -= time_interval;
+        triggercounter++;
+        if (!is_infinite && triggercounter >= triggeramount) {
+          is_expired = true;
+        }
+      }
     }
   }
 
-private:
-  double accumulator = 0;
-  double time_interval = 1; // only display every 1 seconds
+
 };
 
+void myupdatedisplay(const timer &timer_input) {
+  mvprintw(timer_input.triggercounter, timer_input.triggercounter, "hello %d",
+           timer_input.triggercounter);
+}
+
 // manage collection of timers
 class timermanager {
   std::vector<std::unique_ptr<timer>> timers;
@@ -71,7 +82,12 @@ public:
     for (auto &mytimer : timers) {
       mytimer->updatetime(dtime);
       mvprintw(12, 0, "updated timer %s", mytimer->name.c_str());
-    };
+    }
+    timers.erase(std::remove_if(timers.begin(), timers.end(),
+                                [](auto &timer) { return timer->is_expired; }),
+                 timers.end());
+    // implement delete timers
+    ;
     refresh();
   }
 };
@@ -82,20 +98,17 @@ int main() {
   refresh();
   // printf("verification\n");
 
-  auto starttime = std::chrono::system_clock::now(); // initial starttime
-  mysecondsdisplay secdisp;
-  auto clocktimer = std::make_unique<timer>("secondsprinter", 1, [&]() { secdisp.myupdatedisplay(); });
+  auto starttime = std::chrono::steady_clock::now(); // initial starttime
+  auto clocktimer = std::make_unique<timer>("secondsprinter", 1, 10, myupdatedisplay);
   timermanager mytimermanager;  
   mytimermanager.addtimer(std::move(clocktimer));
   
   mvprintw(5, 5, "timer added");
   // calculate delta between current and previous time
   while (true) {
-    auto currenttime = std::chrono::system_clock::now();
+    auto currenttime = std::chrono::steady_clock::now();
     std::chrono::duration<double> myDeltaTime = currenttime - starttime;
     double dtime = myDeltaTime.count();
-    // mvprintw(11, 11, "dtime: %f", dtime);
-    //  clocktimer.updatetime(dtime);
     mytimermanager.updatetimers(dtime);
 
     starttime = currenttime;