diff --git a/README.md b/README.md
index 80f450d..187faab 100644
--- a/README.md
+++ b/README.md
@@ -35,23 +35,23 @@ You have to short-circuit `R0` on the RS485 boards to enable the termination res
 
 ![Circuit diagram](/assets/circuit/diagram.svg)
 
-| GPIO | Usage          |
-| ---- | -------------- |
-| GND  | GND to others  |
-| 3,5V | VIN on RS485   |
-| 5V   | VIN on W5500   |
-| 0    | Onboard Button |
-| 5    | Ext. Button    |
-| 7    | Ext. LED       |
-| 15   | Onboard LED    |
-| 17   | U1TXD          |
-| 18   | U1RXD          |
-| 21   | U0TXD          |
-| 33   | U0RXD          |
-| 34   | SPI CS         |
-| 35   | SPI MOS        |
-| 36   | SPI SCK        |
-| 37   | SPI MISO       |
+| GPIO    | Usage          |
+| ------- | -------------- |
+| GND     | GND to others  |
+| 3,3V    | VIN on RS485   |
+| 5V/VBUS | VIN on W5500   |
+| 0       | Onboard Button |
+| 5       | Ext. Button    |
+| 7       | Ext. LED       |
+| 15      | Onboard LED    |
+| 17      | U1TXD          |
+| 18      | U1RXD          |
+| 21      | U0TXD          |
+| 33      | U0RXD          |
+| 34      | SPI CS         |
+| 35      | SPI MOS        |
+| 36      | SPI SCK        |
+| 37      | SPI MISO       |
 
 ---
 
diff --git a/src/main.cpp b/src/main.cpp
index 08cd9e6..c782905 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -26,8 +26,6 @@
 #include "routes/networks.h"
 #include "routes/status.h"
 
-// DMXESPSerial dmx1;
-// DMXESPSerial dmx2;
 dmx_port_t dmx1 = DMX_NUM_0; // for esp32s2
 dmx_port_t dmx2 = DMX_NUM_1;
 byte dmx1_data[DMX_PACKET_SIZE];
@@ -197,15 +195,8 @@ void setup()
     direction1 = static_cast<Direction>(config.getUInt("direction-1", DEFAULT_DIRECTION1));
     direction2 = static_cast<Direction>(config.getUInt("direction-2", DEFAULT_DIRECTION2));
 
-    Serial.print("Port A: Universe ");
-    Serial.print(universe1);
-    Serial.print(" ");
-    Serial.println((direction1 == Input) ? "DMX -> Art-Net" : "Art-Net -> DMX");
-
-    Serial.print("Port B: Universe ");
-    Serial.print(universe2);
-    Serial.print(" ");
-    Serial.println((direction2 == Input) ? "DMX -> Art-Net" : "Art-Net -> DMX");
+    Serial.printf("Port A: Universe %d %s\n", universe1, (direction1 == Input) ? "DMX -> Art-Net" : "Art-Net -> DMX");
+    Serial.printf("Port B: Universe %d %s\n", universe2, (direction2 == Input) ? "DMX -> Art-Net" : "Art-Net -> DMX");
 
     Connection connection = static_cast<Connection>(config.getUInt("connection", DEFAULT_CONNECTION));
     IpMethod ipMethod = static_cast<IpMethod>(config.getUInt("ip-method"), DEFAULT_IP_METHOD);
@@ -323,44 +314,21 @@ void setup()
     Serial.println("Initialize DMX...");
 
 #ifdef CONFIG_IDF_TARGET_ESP32S2
-    // dmx1.init(21, 33, Serial0);
-    // dmx2.init(17, 18, Serial1);
-
-    Serial.print("DMX driver 1 installed: ");
-    Serial.println(dmx_driver_is_installed(dmx1));
-
-    Serial.print("DMX driver 2 installed: ");
-    Serial.println(dmx_driver_is_installed(dmx2));
 
     dmx_config_t dmx_config = DMX_CONFIG_DEFAULT;
-
     dmx_personality_t personalities[] = {};
-    /*dmx_personality_t personalities[] = {
-        {1, "Default Personality"}
-    };*/
-    /*int personality_count = 1;*/
     int personality_count = 0;
+
     dmx_driver_install(dmx1, &dmx_config, personalities, personality_count);
     dmx_set_pin(dmx1, 21, 33, -1);
     dmx_driver_install(dmx2, &dmx_config, personalities, personality_count);
     dmx_set_pin(dmx2, 17, 18, -1);
 
-    Serial.print("DMX driver 1 installed: ");
-    Serial.println(dmx_driver_is_installed(dmx1));
+    Serial.printf("DMX driver 1 installed: %d\n", dmx_driver_is_installed(dmx1));
+    Serial.printf("DMX driver 2 installed: %d\n", dmx_driver_is_installed(dmx2));
 
-    Serial.print("DMX driver 2 installed: ");
-    Serial.println(dmx_driver_is_installed(dmx2));
-
-    Serial.print("DMX driver 1 enabled: ");
-    Serial.println(dmx_driver_is_enabled(dmx1));
-
-    Serial.print("DMX driver 2 enabled: ");
-    Serial.println(dmx_driver_is_enabled(dmx2));
-
-    // TX/RX Pins und Serial0/Serial1 ausgeben
-
-    /* Now set the DMX hardware pins to the pins that we want to use and setup
-      will be complete! */
+    Serial.printf("DMX driver 1 enabled: %d\n", dmx_driver_is_enabled(dmx1));
+    Serial.printf("DMX driver 2 enabled: %d\n", dmx_driver_is_enabled(dmx2));
 
 #else
     dmx1.init(21, 33, Serial1);
@@ -374,7 +342,6 @@ void setup()
     // if Artnet packet comes to this universe, this function is called
     if (direction1 == Output)
     {
-        Serial.println("DMX1 as out");
         artnet.subscribeArtDmxUniverse(universe1, [&](const uint8_t *data, uint16_t size, const ArtDmxMetadata &metadata, const ArtNetRemoteInfo &remote)
                                        {
             dmx_write_offset(dmx1, 1, data, size);
@@ -384,7 +351,6 @@ void setup()
 
     if (direction2 == Output)
     {
-        Serial.println("DMX2 as out");
         artnet.subscribeArtDmxUniverse(universe2, [&](const uint8_t *data, uint16_t size, const ArtDmxMetadata &metadata, const ArtNetRemoteInfo &remote)
                                        {
             dmx_write_offset(dmx2, 1, data, size);
@@ -392,9 +358,6 @@ void setup()
             dmx_wait_sent(dmx2, DMX_TIMEOUT_TICK); });
     }
 
-    // if Artnet packet comes, this function is called to every universe
-    // artnet.subscribeArtDmx([&](const uint8_t *data, uint16_t size, const ArtDmxMetadata &metadata, const ArtNetRemoteInfo &remote) {});
-
     if (!LittleFS.begin(true))
     {
         Serial.println("An Error has occurred while mounting LittleFS");