we found that the i2c pins of the master was swapped

docs/readme.md

@@ -5,8 +5,8 @@
 ![ESP32S3 Pinout](./images/esp32c3_pinout.png "Text to show on mouseover")
 
 ```
-    SDA_PIN = 6
-    SCL_PIN = 7
+    SDA_PIN = 7
+    SCL_PIN = 6
 ```
 
 ## ESP32S3 (Slaves) Connection

src/game/code/code.ino

@@ -1,4 +1,4 @@
-// MAster
+// Master
 
 #include  "dice.h"        // Dice Function
 #include  "header.h"      // Player Data Types

src/game/i2c_master_test/i2c_master_test.ino

@@ -0,0 +1,43 @@
+  #include <Wire.h>
+
+  // Custom I2C pins for ESP32C3
+  #define I2C_SDA_PIN 7
+  #define I2C_SCL_PIN 6
+
+  void setup() {
+    Serial.begin(115200);
+    Wire.setPins(I2C_SDA_PIN, I2C_SCL_PIN);
+    Wire.begin();
+    Serial.println("Master ready. Scanning for slaves...");
+    scanI2C();
+  }
+
+  void loop() {
+    if (Serial.available()) {
+      int value = Serial.parseInt();
+      if (value >= 0 && value <= 255) {
+        Serial.print("Sending value: ");
+        Serial.println(value);
+        Wire.beginTransmission(0x10); // Change to 0x20 for the second slave
+        Wire.write(value);
+        Wire.endTransmission();
+      }
+    }
+  }
+
+  void scanI2C() {
+    byte error, address;
+    int nDevices = 0;
+    Serial.println("Scanning I2C bus...");
+    for(address = 1; address < 127; address++) {
+      Wire.beginTransmission(address);
+      error = Wire.endTransmission();
+      if (error == 0) {
+        Serial.print("I2C device found at address 0x");
+        Serial.println(address, HEX);
+        nDevices++;
+      }
+    }
+    if (nDevices == 0)
+      Serial.println("No I2C devices found");
+  }

src/joystic/i2c_blue_joystic/i2c_blue_joystic.ino

@@ -0,0 +1,28 @@
+  #include <Wire.h>
+
+  // Custom I2C pins for ESP32-S3
+  #define I2C_SDA_PIN 5
+  #define I2C_SCL_PIN 4
+  #define SLAVE_ADDR  0x20  // Use 0x20 for the second slave
+
+  uint8_t receivedValue = 0;
+
+  void setup() {
+    Serial.begin(115200);
+    Wire.setPins(I2C_SDA_PIN, I2C_SCL_PIN);
+    Wire.begin(SLAVE_ADDR);
+    Wire.onReceive(receiveEvent);
+    Serial.print("Slave ready at address 0x20");
+  }
+
+  void loop() {
+    // Nothing to do here; all logic is in callbacks
+  }
+
+  void receiveEvent(int numBytes) {
+    if (Wire.available()) {
+      receivedValue = Wire.read();
+      Serial.print("Received value: ");
+      Serial.println(receivedValue);
+    }
+  }

src/joystic/i2c_red_joystic/i2c_red_joystic.ino

@@ -0,0 +1,28 @@
+  #include <Wire.h>
+
+  // Custom I2C pins for ESP32-S3
+  #define I2C_SDA_PIN 5
+  #define I2C_SCL_PIN 4
+  #define SLAVE_ADDR  0x10  // Use 0x20 for the second slave
+
+  uint8_t receivedValue = 0;
+
+  void setup() {
+    Serial.begin(115200);
+    Wire.setPins(I2C_SDA_PIN, I2C_SCL_PIN);
+    Wire.begin(SLAVE_ADDR);
+    Wire.onReceive(receiveEvent);
+    Serial.print("Slave ready at address 0x10");
+  }
+
+  void loop() {
+    // Nothing to do here; all logic is in callbacks
+  }
+
+  void receiveEvent(int numBytes) {
+    if (Wire.available()) {
+      receivedValue = Wire.read();
+      Serial.print("Received value: ");
+      Serial.println(receivedValue);
+    }
+  }