diff --git a/keywords.txt b/keywords.txt
index 0c1aa86..522b651 100644
--- a/keywords.txt
+++ b/keywords.txt
@@ -14,6 +14,14 @@ Atm_fade	KEYWORD1
 Atm_button	KEYWORD1
 Atm_timer	KEYWORD1
 Atm_comparator	KEYWORD1
+Atm_controller	KEYWORD1
+Atm_bit	KEYWORD1
+Atm_player	KEYWORD1
+Atm_command	KEYWORD1
+Atm_blink	KEYWORD1
+Atm_digital	KEYWORD1
+Atm_analog	KEYWORD1
+Atm_encoder	KEYWORD1
 
 #######################################
 # Methods and Functions (KEYWORD2)
diff --git a/src/Atm_button.cpp b/src/Atm_button.cpp
index 2668467..97d4674 100644
--- a/src/Atm_button.cpp
+++ b/src/Atm_button.cpp
@@ -28,10 +28,24 @@ Atm_button& Atm_button::begin( int attached_pin ) {
   timer_delay.set( ATM_TIMER_OFF );
   timer_repeat.set( ATM_TIMER_OFF );
   timer_auto.set( ATM_TIMER_OFF );
-  pinMode( pin, INPUT_PULLUP );
+  if (digitalRead(attached_pin)) {
+	  this->released_state = HIGH;
+  } else {
+	  this->released_state = LOW;
+  }
   return *this;
 }
 
+bool
+Atm_button::is_pressed(uint8_t cur_state)
+{
+    if (this->released_state == cur_state) {
+		return false;
+	} else {
+		return true;
+	}
+}
+
 int Atm_button::event( int id ) {
   switch ( id ) {
     case EVT_LMODE:
@@ -45,9 +59,9 @@ int Atm_button::event( int id ) {
     case EVT_AUTO:
       return timer_auto.expired( this );
     case EVT_PRESS:
-      return !digitalRead( pin );
+      return is_pressed(digitalRead( pin ));
     case EVT_RELEASE:
-      return digitalRead( pin );
+      return !is_pressed(digitalRead( pin ));
     case EVT_COUNTER:
       return counter_longpress.expired();
   }
diff --git a/src/Atm_button.hpp b/src/Atm_button.hpp
index 36ce629..a8e3d62 100644
--- a/src/Atm_button.hpp
+++ b/src/Atm_button.hpp
@@ -30,6 +30,9 @@ class Atm_button : public Machine {
   int longpress_max;
   int auto_press = 1;
 
+  uint8_t released_state;
+  bool is_pressed(uint8_t cur_state);
+  
   int event( int id );
   void action( int id );
 };
diff --git a/src/Atm_controller.cpp b/src/Atm_controller.cpp
index 027e0cc..3edc686 100644
--- a/src/Atm_controller.cpp
+++ b/src/Atm_controller.cpp
@@ -44,17 +44,17 @@ void Atm_controller::action( int id ) {
 
 bool Atm_controller::eval_one( atm_connector& connector ) {
   switch ( connector.relOp() ) {
-    case connector.REL_EQ:
+	case atm_connector::REL_EQ:
       return connector.pull() == connector.event;
-    case connector.REL_NEQ:
+    case atm_connector::REL_NEQ:
       return connector.pull() != connector.event;
-    case connector.REL_LT:
+    case atm_connector::REL_LT:
       return connector.pull() < connector.event;
-    case connector.REL_GT:
+    case atm_connector::REL_GT:
       return connector.pull() > connector.event;
-    case connector.REL_LTE:
+    case atm_connector::REL_LTE:
       return connector.pull() <= connector.event;
-    case connector.REL_GTE:
+    case atm_connector::REL_GTE:
       return connector.pull() >= connector.event;
   }
   return false;
diff --git a/src/Atm_fade.cpp b/src/Atm_fade.cpp
index ad383eb..e02f977 100644
--- a/src/Atm_fade.cpp
+++ b/src/Atm_fade.cpp
@@ -1,5 +1,34 @@
 #include "Atm_fade.hpp"
 
+#define DEBUG_FADE 0
+
+#if 0
+static const PROGMEM uint8_t etable[256] = {
+	0,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
+	1,  1,  1,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,
+	2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  2,  3,  3,  3,  3,  3,
+	3,  3,  3,  3,  3,  3,  3,  3,  3,  3,  4,  4,  4,  4,  4,  4,
+	4,  4,  4,  4,  4,  4,  5,  5,  5,  5,  5,  5,  5,  5,  5,  6,
+	6,  6,  6,  6,  6,  6,  6,  7,  7,  7,  7,  7,  7,  8,  8,  8,
+	8,  8,  8,  9,  9,  9,  9,  9, 10, 10, 10, 10, 10, 11, 11, 11,
+	11, 12, 12, 12, 12, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 16,
+	16, 16, 17, 17, 18, 18, 18, 19, 19, 20, 20, 21, 21, 21, 22, 22,
+	23, 23, 24, 24, 25, 25, 26, 27, 27, 28, 28, 29, 30, 30, 31, 32,
+	32, 33, 34, 35, 35, 36, 37, 38, 39, 39, 40, 41, 42, 43, 44, 45,
+	46, 47, 48, 49, 50, 51, 52, 53, 55, 56, 57, 58, 59, 61, 62, 63,
+	65, 66, 68, 69, 71, 72, 74, 76, 77, 79, 81, 82, 84, 86, 88, 90,
+	92, 94, 96, 98,100,102,105,107,109,112,114,117,119,122,124,127,
+	130,133,136,139,142,145,148,151,155,158,162,165,169,172,176,180,
+	184,188,192,196,201,205,210,214,219,224,229,234,239,244,250,255,
+};
+
+#define NUM_ETAB (sizeof(etable)/sizeof(etable[0]))
+#define READ_ETAB(i) pgm_read_byte(&etable[i])
+#else
+#define NUM_ETAB (256)
+#define READ_ETAB(i) (i)
+#endif
+
 Atm_fade& Atm_fade::begin( int attached_pin ) {
   // clang-format off
   const static state_t state_table[] PROGMEM = {
@@ -20,7 +49,6 @@ Atm_fade& Atm_fade::begin( int attached_pin ) {
   timer_fade.set( 0 );   // Number of ms per slope step (slope duration: rate * 32 ms)
   timer_on.set( 500 );   // Plateau between slopes (in which led is fully on)
   timer_off.set( 500 );  // Pause between slopes (in which led is fully off)
-  counter_fade.set( SLOPE_SIZE );
   counter_repeat.set( ATM_COUNTER_OFF );
   repeat_count = ATM_COUNTER_OFF;
   return *this;
@@ -43,7 +71,38 @@ Atm_fade& Atm_fade::pause( uint32_t duration ) {  // Pause between slopes (in wh
   return *this;
 }
 
+Atm_fade& Atm_fade::fade( unsigned long time_ms, uint8_t pwm_first, uint8_t pwm_last) {
+	this->fade_first = pwm_first % NUM_ETAB;
+	this->fade_last = pwm_last % NUM_ETAB;
+	this->fade_length = time_ms / 2;
+	this->fade_accu = 0;
+	int fade;
+	unsigned long color_diff;
+	if (this->fade_last >= this->fade_first) {
+		color_diff = this->fade_last - this->fade_first + 1;
+	} else {
+		color_diff = this->fade_first - this->fade_last + 1;
+	}
+	fade = time_ms / 2 / color_diff;
+	if (fade == 0) fade = 1;
+#if DEBUG_FADE
+	if (stream_trace) {stream_trace->print ("setup: time_ms="); stream_trace->println (time_ms); }
+	if (stream_trace) {stream_trace->print ("setup: color_diff="); stream_trace->println (color_diff); }
+	if (stream_trace) {stream_trace->print ("setup: fade="); stream_trace->println (fade); }
+	if (stream_trace) { stream_trace->print ("setup: fade_first="); stream_trace->println (this->fade_first); }
+	if (stream_trace) { stream_trace->print ("setup: fade_last="); stream_trace->println (this->fade_last); }
+	if (stream_trace) { stream_trace->print ("setup: fade_length="); stream_trace->println (this->fade_length); }
+	if (stream_trace) { stream_trace->print ("setup: fade_accu="); stream_trace->println (this->fade_accu); }
+#endif
+	timer_fade.set( time_ms / 2 > 0 ? fade : ATM_TIMER_OFF );  // Number of ms per slope step (slope duration: rate * 32 ms)
+	return *this;
+}
+
 Atm_fade& Atm_fade::fade( int fade ) {
+  this->fade_first = 0;
+  this->fade_last = NUM_ETAB - 1;
+  this->fade_length = (this->fade_last - this->fade_first + 1) * fade;
+  this->fade_accu = 0;
   timer_fade.set( fade >= 0 ? fade : ATM_TIMER_OFF );  // Number of ms per slope step (slope duration: rate * 32 ms)
   return *this;
 }
@@ -62,7 +121,7 @@ int Atm_fade::event( int id ) {
     case EVT_TM_OFF:
       return timer_off.expired( this );
     case EVT_CNT_FADE:
-      return counter_fade.expired();
+      return (this->fade_accu > 0) && (this->fade_accu >= this->fade_length);
     case EVT_CNT_RPT:
       return counter_repeat.expired();
   }
@@ -82,16 +141,87 @@ void Atm_fade::action( int id ) {
       analogWrite( pin, 0 );
       return;
     case ENT_START:
-      counter_fade.set( SLOPE_SIZE );
+	  this->fade_prev_tm = millis();
+	  this->fade_accu = 0;
       return;
     case ENT_UP:
-      analogWrite( pin, slope[SLOPE_SIZE - counter_fade.value] );
-      counter_fade.decrement();
+	{
+	  unsigned long color_diff;
+	  int incval;
+	  unsigned long now;
+	  now = millis();
+	  unsigned int time_diff = now;
+	  if (now >= this->fade_prev_tm) {
+		  time_diff = now - this->fade_prev_tm;
+	  }
+	  this->fade_accu += time_diff;
+	  if (this->fade_accu >= this->fade_length) {
+		this->fade_accu = this->fade_length;
+	  }
+	  if (this->fade_last >= this->fade_first) {
+		  color_diff = this->fade_last - this->fade_first + 1;
+		  incval = (this->fade_accu * color_diff / this->fade_length);
+		  if (incval > 0) incval --;
+		  //READ_ETAB(this->fade_last - this->fade_first + 1 - counter_fade.value + this->fade_first)
+		  //analogWrite( pin, READ_ETAB((int)this->fade_last + 1 - counter_fade.value) );
+#if DEBUG_FADE
+          if (stream_trace) {stream_trace->print ("color_diff="); stream_trace->println (color_diff); }
+          if (stream_trace) {stream_trace->print ("incval="); stream_trace->println (incval); }
+          if (stream_trace) { stream_trace->print ("write analog up="); stream_trace->println (this->fade_first + incval); }
+#endif
+		  analogWrite( pin, READ_ETAB(this->fade_first + incval) );
+	  } else {
+		  color_diff = this->fade_first - this->fade_last + 1;
+		  incval = (this->fade_accu * color_diff / this->fade_length);
+		  if (incval > 0) incval --;
+		  //READ_ETAB(this->fade_first - (this->fade_first - this->fade_last + 1 - .value) )
+		  //analogWrite( pin, READ_ETAB((int)this->fade_last - 1 + counter_fade.value) );
+#if DEBUG_FADE
+          if (stream_trace) {stream_trace->print ("color_diff="); stream_trace->println (color_diff); }
+          if (stream_trace) {stream_trace->print ("incval="); stream_trace->println (incval); }
+          if (stream_trace) { stream_trace->print ("write analog up="); stream_trace->println (this->fade_first - incval); }
+#endif
+		  analogWrite( pin, READ_ETAB(this->fade_first - incval) );
+	  }
       return;
+	}
     case ENT_DOWN:
-      analogWrite( pin, slope[counter_fade.value - 1] );
-      counter_fade.decrement();
+	{
+	  unsigned long color_diff;
+	  int incval;
+	  unsigned long now;
+	  now = millis();
+	  unsigned int time_diff = now;
+	  if (now >= this->fade_prev_tm) {
+	    time_diff = now - this->fade_prev_tm;
+	  }
+	  this->fade_accu += time_diff;
+	  if (this->fade_accu >= this->fade_length) {
+	    this->fade_accu = this->fade_length;
+	  }
+	  if (this->fade_last >= this->fade_first) {
+		  color_diff = this->fade_last - this->fade_first + 1;
+		  incval = (this->fade_accu * color_diff / this->fade_length);
+		  if (incval > 0) incval --;
+#if DEBUG_FADE
+          if (stream_trace) {stream_trace->print ("color_diff="); stream_trace->println (color_diff); }
+          if (stream_trace) {stream_trace->print ("incval="); stream_trace->println (incval); }
+          if (stream_trace) {stream_trace->print ("write analog down="); stream_trace->println (this->fade_last - incval); }
+#endif
+		  analogWrite( pin, READ_ETAB(this->fade_last - incval) );
+	  } else {
+		  color_diff = this->fade_first - this->fade_last + 1;
+		  incval = (this->fade_accu * color_diff / this->fade_length);
+		  if (incval > 0) incval --;
+#if DEBUG_FADE
+          if (stream_trace) {stream_trace->print ("color_diff="); stream_trace->println (color_diff); }
+          if (stream_trace) {stream_trace->print ("incval="); stream_trace->println (incval); }
+          if (stream_trace) {stream_trace->print ("write analog down="); stream_trace->println (this->fade_last + incval); }
+#endif
+		  analogWrite( pin, READ_ETAB(this->fade_last + incval) );
+	  }
       return;
+	}
   }
 }
 
diff --git a/src/Atm_fade.hpp b/src/Atm_fade.hpp
index e45f5cf..988ea40 100644
--- a/src/Atm_fade.hpp
+++ b/src/Atm_fade.hpp
@@ -14,6 +14,7 @@ class Atm_fade : public Machine {
   Atm_fade& blink( uint32_t duration );
   Atm_fade& pause( uint32_t duration );
   Atm_fade& fade( int fade );
+  Atm_fade& fade( unsigned long time_ms, uint8_t pwm_first, uint8_t pwm_last); // fade an LED with a range of PWM value over a duration of milliseconds
   Atm_fade& repeat( uint16_t repeat );
   Atm_fade& on( void );
   Atm_fade& off( void );
@@ -23,12 +24,15 @@ class Atm_fade : public Machine {
 
  private:
   enum { ENT_REPEAT, ENT_OFF, ENT_ON, ENT_UP, ENT_DOWN, ENT_START };
-  static const uint8_t SLOPE_SIZE = 32;
-  uint8_t slope[SLOPE_SIZE] = {0, 0, 1, 1, 2, 2, 3, 4, 5, 6, 7, 8, 10, 12, 15, 18, 22, 26, 31, 37, 44, 54, 63, 76, 90, 108, 127, 153, 180, 217, 230, 255};
+  uint8_t fade_first;
+  uint8_t fade_last;
+  unsigned long fade_length; // the millisecond time from fade_first to fade_last, OR back from fade_last to fade_first
+  unsigned long fade_accu; // the accumulate time from the start. <= fade_length
+  unsigned long fade_prev_tm; // the last update time, for fade_accu
   short pin;
   uint16_t repeat_count;
   atm_timer_millis timer_fade, timer_on, timer_off;
-  atm_counter counter_fade, counter_repeat;
+  atm_counter counter_repeat;
   int event( int id );
   void action( int id );
 };