diff --git a/platformio.ini b/platformio.ini
index 2c3ffa9..7cd6dfc 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -13,9 +13,9 @@ platform = espressif32
 board = nodemcu-32s
 framework = arduino
 monitor_speed = 115200
-monitor_port = COM3
+monitor_port = /dev/ttyACM0
 monitor_filters = time
-upload_port = COM3
+upload_port = /dev/ttyACM0
 lib_deps =
     knolleary/PubSubClient @ 2.8
     adafruit/Adafruit GFX Library @ 1.11.3
@@ -23,7 +23,7 @@ lib_deps =
     ;adafruit/Adafruit BusIO @ 1.7.2
 
 build_flags =
-    -DSCAN=32
+    -DSCAN=16
     
 
 [env:debug]     ; Entwicklungssystem
diff --git a/src/main.cpp b/src/main.cpp
index 5bb3dd3..abe3654 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -25,7 +25,8 @@
 #define P_B 23
 #define P_C 18
 #define P_D 5
-#define P_E 15
+//#define P_E 15
+#define P_E -1
 #define P_OE 16
 hw_timer_t * timer = NULL;
 portMUX_TYPE timerMux = portMUX_INITIALIZER_UNLOCKED;
@@ -71,8 +72,8 @@ PubSubClient client(espClient);
 uint8_t display_draw_time=10; //30-70 is usually fine
 
 //PxMATRIX display(32,16,P_LAT, P_OE,P_A,P_B,P_C);
-//PxMATRIX display(64,32,P_LAT, P_OE,P_A,P_B,P_C,P_D);
-PxMATRIX display(64,64,P_LAT, P_OE,P_A,P_B,P_C,P_D,P_E);
+PxMATRIX display(64,32,P_LAT, P_OE,P_A,P_B,P_C,P_D);
+//PxMATRIX display(64,64,P_LAT, P_OE,P_A,P_B,P_C,P_D,P_E);
 
 // Some standard colors
 uint16_t myRED = display.color565(255, 0, 0);