diff --git a/firmware/app/driver/aw20xxx.c b/firmware/app/driver/aw20xxx.c
index 01aaf1a..5f0031a 100644
--- a/firmware/app/driver/aw20xxx.c
+++ b/firmware/app/driver/aw20xxx.c
@@ -152,8 +152,8 @@ void aw20x_set_dim(struct AW20x *aw)
 void aw20x_set_dim_global(struct AW20x *aw, uint8_t dim)
 {
     uint8_t i;
-    uint8_t row;
-    uint8_t offset;
+    //uint8_t row;
+    uint8_t offset = 0;
 
     // ceil
     if (dim > 0x3f) dim = 0x3f;
@@ -167,13 +167,12 @@ void aw20x_set_dim_global(struct AW20x *aw, uint8_t dim)
     for (i = 0; i <= aw->rows; i++) aw_buf[i] = dim;
 
     // send buffer for each column
-    row = offset = 0;
+    //row = offset = 0;
     for (i = 0; i < aw->cols; i++) {
         AW20X_I2C_writereg(aw->addr, offset, aw_buf, aw->rows);
         while (AW20X_I2C_busy());
-        row += aw->rows;
+        //row += aw->rows;
         offset += AW20X_MAX_ROWS;
-
     }
 }
 
diff --git a/firmware/app/led/matrix.c b/firmware/app/led/matrix.c
index 291f104..71fdadd 100644
--- a/firmware/app/led/matrix.c
+++ b/firmware/app/led/matrix.c
@@ -13,7 +13,7 @@
 
 
 
-#define AW20X_DIM           28  // initial global current setting
+#define AW20X_DIM           20  // initial global current setting
 
 #define AW20X_COLS          6
 #define AW20X_ROWS          12
diff --git a/firmware/app/ui/temp_ui.c b/firmware/app/ui/temp_ui.c
index d17928d..8640631 100644
--- a/firmware/app/ui/temp_ui.c
+++ b/firmware/app/ui/temp_ui.c
@@ -10,7 +10,7 @@
 
 
 
-static uint32_t brt = 28;
+static uint32_t brt = 20;   // set to same as in matrix.c
 
 uint8_t ribbon_prog = 0;
 uint8_t aii_prog = 0;