diff --git a/ledcontroller.c b/ledcontroller.c
index 1a5c689..c771bfc 100644
--- a/ledcontroller.c
+++ b/ledcontroller.c
@@ -123,6 +123,11 @@ static void write_global_latch(uint16_t data)
   write_data(data, 6);
 }
 
+static void write_no_command(uint16_t data)
+{
+  write_data(data, 0);
+}
+
 
 void ledcontroller_turn_all_on(void)
 {
@@ -174,6 +179,7 @@ void led_set(uint8_t lednum, uint16_t red, uint16_t green, uint16_t blue)
 }
 
 
+#if 0
 void led_flush(void)
 {
   for (uint8_t i=0; i<NUM_LED_CHANNELS-1; i++) {
@@ -182,4 +188,29 @@ void led_flush(void)
   }
   write_global_latch(ledbuffer[NUM_LED_CHANNELS-1]);
 }
+#endif
+
+void led_flush(void)
+{
+  uint8_t channel;
+  for (channel=0; channel<NUM_LED1642GW_CHANNELS-1; channel++) {
+    write_no_command(ledbuffer[3*channel+0]);
+    write_no_command(ledbuffer[3*channel+1]);
+    write_data_latch(ledbuffer[3*channel+2]);
+  }
+  write_no_command(ledbuffer[3*channel+0]);
+  write_no_command(ledbuffer[3*channel+1]);
+  write_global_latch(ledbuffer[3*channel+2]);
+
+}
+
+
+void ledcontroller_set_channel(uint8_t channel, uint16_t value)
+{
+  if (channel < NUM_LED_CHANNELS) {
+    ledbuffer[channel] = value;
+  }
+
+}
+
 
diff --git a/ledcontroller.h b/ledcontroller.h
index af5a5d3..d07d2b4 100644
--- a/ledcontroller.h
+++ b/ledcontroller.h
@@ -22,7 +22,9 @@ void ledcontroller_init(void);
 void led_set(uint8_t lednum, uint16_t red, uint16_t green, uint16_t blue);
 void led_flush(void);
 void ledcontroller_turn_all_on(void);
-void ledcontroller_turn_all_off(void);
+void ledcontroller_turn_all(void);
+void ledcontroller_set_channel(uint8_t channel, uint16_t value);
+
 
 #endif // LEDCONTROLLER_H
 
diff --git a/rgbyteclock.c b/rgbyteclock.c
index 2460184..899a463 100644
--- a/rgbyteclock.c
+++ b/rgbyteclock.c
@@ -22,40 +22,58 @@ void rgbyteclock(void)
 
   ledcontroller_turn_all_on();
 
-  while(1) {
+  while (1) {
+
+    //led_set(11, 0x7ff, 0x00, 0x00);
+    for (int c=0; c<48; c++) {
+      //PORTC ^= (1<<PC5);
+      ledcontroller_set_channel(c, 0x7ff);
+      led_flush();
+      timer_wait(1000);
+    }
+    for (int i=0; i<16; i++) {
+      led_set(i, 0x00, 0x00, 0x00);
+    }
+    led_flush();
+    timer_wait(100);
+
+  }
+
+
+  while (1) {
     PORTC ^= (1<<PC5);
     for (int i=0; i<15; i++) {
       led_set(i, 0x7ff, 0x00, 0x00);
       led_flush();
-      timer_wait(2000);
+      timer_wait(500);
     }
     for (int i=0; i<15; i++) {
       led_set(i, 0x00, 0x00, 0x00);
     }
     led_flush();
-    timer_wait(1000);
+    timer_wait(100);
 
     for (int i=0; i<15; i++) {
       led_set(i, 0x00, 0x7ff, 0x00);
       led_flush();
-      timer_wait(2000);
+      timer_wait(500);
     }
     for (int i=0; i<15; i++) {
       led_set(i, 0x00, 0x00, 0x00);
     }
     led_flush();
-    timer_wait(1000);
+    timer_wait(100);
 
     for (int i=0; i<15; i++) {
       led_set(i, 0x00, 0x00, 0x7ff);
       led_flush();
-      timer_wait(2000);
+      timer_wait(500);
     }
     for (int i=0; i<15; i++) {
       led_set(i, 0x00, 0x00, 0x00);
     }
     led_flush();
-    timer_wait(1000);
+    timer_wait(100);
 
   }