diff --git a/variants/esp32s3/rak3312/pins_arduino.h b/variants/esp32s3/rak3312/pins_arduino.h
index 15a26e991..dc5d30d61 100644
--- a/variants/esp32s3/rak3312/pins_arduino.h
+++ b/variants/esp32s3/rak3312/pins_arduino.h
@@ -17,6 +17,8 @@ static const uint8_t MOSI = 11;
 static const uint8_t MISO = 10;
 static const uint8_t SCK = 13;
 
+#define SPI_INTERFACES_COUNT 1
+
 #define SPI_MOSI (11)
 #define SPI_SCK (13)
 #define SPI_MISO (10)
@@ -25,4 +27,51 @@ static const uint8_t SCK = 13;
 // LEDs
 #define LED_BUILTIN LED_GREEN
 
+#ifdef _VARIANT_RAK3112_
+/*
+ * Serial interfaces
+ */
+// TXD1 RXD1 on Base Board
+#define PIN_SERIAL1_RX (44)
+#define PIN_SERIAL1_TX (43)
+
+/*
+ * Internal SPI to LoRa transceiver
+ */
+#define LORA_SX126X_SCK 5
+#define LORA_SX126X_MISO 3
+#define LORA_SX126X_MOSI 6
+
+/*
+ * Analog pins
+ */
+#define PIN_A0 (21)
+#define PIN_A1 (14)
+
+/*
+ * Wire Interfaces
+ */
+#define WIRE_INTERFACES_COUNT 2
+
+#define PIN_WIRE1_SDA (17)
+#define PIN_WIRE1_SCL (18)
+
+/*
+ * GPIO's
+ */
+#define WB_IO1 21
+#define WB_IO2 2
+// #define WB_IO2 14
+#define WB_IO3 41
+#define WB_IO4 42
+#define WB_IO5 38
+#define WB_IO6 39
+// #define WB_SW1 35 NC
+#define WB_A0 1
+#define WB_A1 2
+#define WB_CS 12
+#define WB_LED1 46
+#define WB_LED2 45
+#endif
+
 #endif /* Pins_Arduino_h */
diff --git a/variants/esp32s3/rak3312/platformio.ini b/variants/esp32s3/rak3312/platformio.ini
index 65eba93e6..1f95c3b73 100644
--- a/variants/esp32s3/rak3312/platformio.ini
+++ b/variants/esp32s3/rak3312/platformio.ini
@@ -9,3 +9,16 @@ build_flags =
   ${esp32s3_base.build_flags}
   -D RAK3312
   -I variants/esp32s3/rak3312
+
+[env:rak3112]
+extends = esp32s3_base
+board = wiscore_rak3312
+board_level = pr
+board_check = true
+upload_protocol = esptool
+
+build_flags =
+  ${esp32_base.build_flags}
+  -D RAK3312 
+  -D _VARIANT_RAK3112_
+  -I variants/esp32s3/rak3312
diff --git a/variants/esp32s3/rak3312/variant.h b/variants/esp32s3/rak3312/variant.h
index dfdf4de71..1f8eb9e39 100644
--- a/variants/esp32s3/rak3312/variant.h
+++ b/variants/esp32s3/rak3312/variant.h
@@ -18,11 +18,6 @@
 #define SX126X_DIO3_TCXO_VOLTAGE 1.8
 #endif
 
-#define SX126X_POWER_EN (4)
-
-#define PIN_POWER_EN PIN_3V3_EN
-#define PIN_3V3_EN (14)
-
 #define LED_GREEN 46
 #define LED_BLUE 45
 
@@ -35,10 +30,30 @@
 
 #define LED_STATE_ON 1 // State when LED is litted
 
+#define BATTERY_PIN 1
+#define ADC_CHANNEL ADC1_GPIO1_CHANNEL
+
+#ifdef _VARIANT_RAK3112_ //  Modular variant (stamp)
+#define ADC_MULTIPLIER 2.11
+
+#define BUTTON_NEED_PULLUP
+
+#define HAS_SDCARD
+#define SDCARD_USE_SPI1
+#define SDCARD_CS SPI_CS
+
+#define I2C_SDA1 PIN_WIRE1_SDA
+#define I2C_SCL1 PIN_WIRE1_SCL
+#else // Generic 3312 variant (40-pin standard connector)
+#define ADC_MULTIPLIER 1.667
+
+#define SX126X_POWER_EN (4)
+
+#define PIN_POWER_EN PIN_3V3_EN
+#define PIN_3V3_EN (14)
+
 #define HAS_GPS 1
 #define GPS_TX_PIN 43
 #define GPS_RX_PIN 44
 
-#define BATTERY_PIN 1
-#define ADC_CHANNEL ADC1_GPIO1_CHANNEL
-#define ADC_MULTIPLIER 1.667
\ No newline at end of file
+#endif
\ No newline at end of file