diff --git a/main/leds.h b/main/leds.h
index 16b2a7d..be324d2 100644
--- a/main/leds.h
+++ b/main/leds.h
@@ -10,10 +10,10 @@
 #include <stdint.h>
 #include <stddef.h>
 #include <unistd.h>
+#include "shared.h"
 #include "esp8266/gpio_register.h"
 #include "esp_system.h"
 #include "rom/ets_sys.h"
-#include "shared.h"
 #include "driver/gpio.h"
 
 // pack the struct to match exactly 8 * 4 = 32bits
@@ -36,6 +36,14 @@ union led_t {
 struct gradient_point_t {
     union led_t led;    // value of the led at this point
     size_t offset;      // offset (measured in leds) from the beginning
+    short movement;     // direction of movement over time
+};
+
+struct gradient_t {
+    struct gradient_point_t points[16]; // array of gradient points, support at most 16 points in a gradient
+    size_t points_len;                           // number of used gradient points
+    float duration;                       // amount of time to allow this gradient to last
+                                          // positive means an amount in second 0 or negative means indefinitely until further notice
 };
 
 // buffer that will be written out to the led strip over serial
@@ -43,6 +51,9 @@ uint32_t g_serial_out_buffer[62];
 // 60-long slice of the out buffer that represents the first few leds
 union led_t* g_leds = ((union led_t*)g_serial_out_buffer + 1);
 
+struct gradient_t g_default_gradient;
+struct gradient_t g_current_gradient;
+int g_leds_are_default = 1;
 
 #define CLOCK 4
 #define DATA 5
@@ -139,20 +150,27 @@ void set_led_range(int start, int end, union led_t value) {
 }
 
 static
-void leds_set_gradient(struct gradient_point_t* points, size_t points_len, int send) {
-    struct gradient_point_t from = points[0];
+void leds_set_default_gradient(const struct gradient_t* gradient) {
+    g_default_gradient = *gradient;
+}
+
+static
+void leds_set_current_gradient(const struct gradient_t* gradient, int defer_send) {
+    struct gradient_point_t from = gradient->points[0];
     struct gradient_point_t to;
 
-    // set_led_range(0, points[0].offset, points[0].led);
-    // set_led_range(points[points_len-1].offset, 60, points[points_len-1].led);
+    set_led_range(0, gradient->points[0].offset, gradient->points[0].led);
+    set_led_range(gradient->points[gradient->points_len-1].offset, 60, gradient->points[gradient->points_len-1].led);
 
-    for(int i = 1; i < points_len; ++i) {
-        to = points[i];
+    g_current_gradient = *gradient;
+
+    for(int i = 1; i < gradient->points_len; ++i) {
+        to = gradient->points[i];
         lerp_points_between(from, to);
         from = to;
     }
 
-    if(send) {
+    if(!defer_send) {
         send_leds();
     }
 }