diff --git a/pattern.c b/pattern.c
index 0d6b289..462b6b3 100644
--- a/pattern.c
+++ b/pattern.c
@@ -24,6 +24,8 @@ void patternExec() {
 }
 */
 
+/*
+ * BLUE
 void patternExec() {
     static uint8_t state = 0;
     static uint8_t column = 0;
@@ -35,6 +37,7 @@ void patternExec() {
             ledSetMatrix(1, 0, BLUE);
             ledSetMatrix(2, 0, BLUE);
             ledSetMatrix(3, 0, BLUE);
+            srand(13);
             state = 1;
             break;
         case 1: 
@@ -59,12 +62,59 @@ void patternExec() {
             // same column, row 3 off
             ledSetMatrix(column, 3, OFF);
             state = 1;
+            break;
+        default:
+            state = 0;
+            break;
+    }
+}
+*/
+
+void patternExec() {
+    static uint8_t state = 0;
+    static uint8_t column = 0;
+
+    switch (state) {
+        case 0:
+            // initialize
+            ledSetMatrix(0, 3, RED);
+            ledSetMatrix(1, 3, RED);
+            ledSetMatrix(2, 3, RED);
+            ledSetMatrix(3, 3, RED);
+            srand(13);
+            state = 1;
+            break;
+        case 1: 
+            // select new column, row 2
+            column = ((uint8_t) rand()) & 0x3;
+            ledSetMatrix(column, 2, RED);
+            state = 2;
+            break;
+        case 2:
+            // same column, row 1
+            ledSetMatrix(column, 1, RED);
+            ledSetMatrix(column, 2, OFF);
+            state = 3;
+            break;
+        case 3:
+            // same column, row 0
+            ledSetMatrix(column, 0, RED);
+            ledSetMatrix(column, 1, OFF);
+            state = 4;
+            break;
+        case 4:
+            // same column, row 0 off
+            ledSetMatrix(column, 0, OFF);
+            state = 1;
+            break;
         default:
             state = 0;
             break;
     }
 }
 
+
+
 void patternInit() {
-    schAdd(patternExec, NULL, 0, 500);
+    schAdd(patternExec, NULL, 0, 1000);
 }
\ No newline at end of file