diff --git a/ledcontroller/app/application.cpp b/ledcontroller/app/application.cpp
index 29c676f..086f2d5 100644
--- a/ledcontroller/app/application.cpp
+++ b/ledcontroller/app/application.cpp
@@ -8,7 +8,7 @@ extern "C" {
 #include "ws2812_i2s.h"
 }
 
-#define LEDS_CNT 20
+#define LEDS_CNT 40
 
 enum LEDMode {
     IDLE,
@@ -106,12 +106,20 @@ public:
 
     void set(uint8_t x, uint8_t y, uint8_t r, uint8_t g, uint8_t b) {
         int k;
-
+        // 5x4
+        /*
         if (y % 2 == 1) {
             k = (y+1)*crateWidth - x - 1;
         } else {
             k = y*crateWidth + x;
         }
+        */
+
+        if (x % 2 == 0) {
+            k = x*5 + y;
+        } else {
+            k = (x + 1)*5 - y - 1;
+        }
 
         leds[k].r = r;
         leds[k].g = g;