diff --git a/firmware/lux.cpp b/firmware/lux.cpp
index 487e338..7f139ad 100644
--- a/firmware/lux.cpp
+++ b/firmware/lux.cpp
@@ -61,6 +61,7 @@ static apa10xx_pixel_t next_color(int i) {
 
 rgba_t top_color;
 rgba_t bottom_color;
+uint16_t dimmer_value;
 
 namespace fiatlux {
 
@@ -298,34 +299,9 @@ extern "C" [[noreturn]] void lux_task(void *pvParameters) {
         uint32_t _;
     } frame = {._=0};
 
-    frame.addr = 0x123;
-    frame.dat = 0xAA55;
-    frame.op = 0x7;
+    dimmer_value = 255;
 
-    auto transfer = [](uint32_t val) -> uint32_t {
-        uint32_t out = val;
-        uint32_t in;
-        spi_transfer(1, &out, &in, 1, SPI_32BIT);
-        return in;
-    };
-
-    dummy = transfer(frame._);
-    if(dummy) {
-        syslog("> ");
-        syslog_i32(dummy);
-        syslog("\n");
-    }
-    syslog("< ");
-    syslog_i32(frame._);
-    syslog("\n");
-    dummy = 0;
-    for (volatile int i = 0; i < 512 * 16; ++i);
-    frame._ = transfer(dummy);
-    if(frame._) {
-        syslog("> ");
-        syslog_i32(frame._);
-        syslog("\n");
-    }
+    uint16_t last_dimmer_value = 0;
 
     while (true) {
         /*for (int j = 0; j < 64; j++) {
@@ -350,9 +326,27 @@ extern "C" [[noreturn]] void lux_task(void *pvParameters) {
                 pixel = next_colour(c);
             }*/
 
-            //for (auto &led: leds) {
-            //   led = next_color(c);
-            //}
+            if(last_dimmer_value != dimmer_value) {
+                for (int i = 0; i < 6; ++i) {
+
+                    frame.op = 0xA;
+                    frame.addr = i * 2 + 1;
+                    frame.dat = 255;
+                    spi_transfer_32(1, frame._);
+
+                    vTaskDelay(13 / portTICK_PERIOD_MS);
+                    //for (volatile int i = 0; i < 512 * 32; ++i);
+
+                    frame.op = 0xA;
+                    frame.addr = i * 2;
+                    frame.dat = dimmer_value << 4;
+                    spi_transfer_32(1, frame._);
+
+                    vTaskDelay(13 / portTICK_PERIOD_MS);
+                    //for (volatile int i = 0; i < 512 * 32; ++i);
+                }
+                //last_dimmer_value = dimmer_value;
+            }
 
             for (int i = 0; i < 120; i++)
                 pixels[i] = {{top_color.r, top_color.g, top_color.b, top_color.a}};
@@ -373,6 +367,5 @@ extern "C" [[noreturn]] void lux_task(void *pvParameters) {
         vTaskDelay(200 / portTICK_PERIOD_MS);
 
 
-
     }
 }
\ No newline at end of file
diff --git a/firmware/lux.h b/firmware/lux.h
index 5d6f8bb..1c9d9e5 100644
--- a/firmware/lux.h
+++ b/firmware/lux.h
@@ -24,6 +24,7 @@ typedef struct {
 
 extern rgba_t top_color;
 extern rgba_t bottom_color;
+extern uint16_t dimmer_value;
 
 #ifdef __cplusplus
 }