diff --git a/main/DS4432U.c b/main/DS4432U.c
index 23232f048..8432e57c1 100644
--- a/main/DS4432U.c
+++ b/main/DS4432U.c
@@ -3,13 +3,7 @@
 #include "esp_log.h"
 #include "driver/i2c.h"
 
-#define I2C_MASTER_SCL_IO 48        /*!< GPIO number used for I2C master clock */
-#define I2C_MASTER_SDA_IO 47        /*!< GPIO number used for I2C master data  */
-#define I2C_MASTER_NUM 0            /*!< I2C master i2c port number, the number of i2c peripheral interfaces available will depend on the chip */
-#define I2C_MASTER_FREQ_HZ 400000   /*!< I2C master clock frequency */
-#define I2C_MASTER_TX_BUF_DISABLE 0 /*!< I2C master doesn't need buffer */
-#define I2C_MASTER_RX_BUF_DISABLE 0 /*!< I2C master doesn't need buffer */
-#define I2C_MASTER_TIMEOUT_MS 1000
+#include "DS4432U.h"
 
 // DS4432U+ -- Adjustable current DAC for use with the TPS40305 voltage regulator
 // address: 0x90
@@ -142,4 +136,4 @@ bool DS4432U_set_vcore(float core_voltage)
     DS4432U_set(reg_setting); /// eek!
 
     return true;
-}
\ No newline at end of file
+}
diff --git a/main/DS4432U.h b/main/DS4432U.h
index 668ed3dda..4f682b451 100644
--- a/main/DS4432U.h
+++ b/main/DS4432U.h
@@ -3,10 +3,12 @@
 
 #include "driver/i2c.h"
 
+#include "i2c_params.h"
+
 esp_err_t i2c_master_init(void);
 esp_err_t i2c_master_delete(void);
 void DS4432U_read(void);
 bool DS4432U_test(void);
 bool DS4432U_set_vcore(float);
 
-#endif /* DS4432U_H_ */
\ No newline at end of file
+#endif /* DS4432U_H_ */
diff --git a/main/EMC2101.c b/main/EMC2101.c
index 3aabf99c7..620d0529f 100644
--- a/main/EMC2101.c
+++ b/main/EMC2101.c
@@ -4,15 +4,6 @@
 
 #include "EMC2101.h"
 
-#define I2C_MASTER_SCL_IO 48 /*!< GPIO number used for I2C master clock */
-#define I2C_MASTER_SDA_IO 47 /*!< GPIO number used for I2C master data  */
-#define I2C_MASTER_NUM                                                                                                             \
-    0 /*!< I2C master i2c port number, the number of i2c peripheral interfaces available will depend on the chip */
-#define I2C_MASTER_FREQ_HZ 400000   /*!< I2C master clock frequency */
-#define I2C_MASTER_TX_BUF_DISABLE 0 /*!< I2C master doesn't need buffer */
-#define I2C_MASTER_RX_BUF_DISABLE 0 /*!< I2C master doesn't need buffer */
-#define I2C_MASTER_TIMEOUT_MS 1000
-
 // static const char *TAG = "EMC2101.c";
 
 /**
diff --git a/main/EMC2101.h b/main/EMC2101.h
index bc9623513..c15b855e1 100644
--- a/main/EMC2101.h
+++ b/main/EMC2101.h
@@ -1,6 +1,8 @@
 #ifndef EMC2101_H_
 #define EMC2101_H_
 
+#include "i2c_params.h"
+
 #define EMC2101_I2CADDR_DEFAULT 0x4C ///< EMC2101 default i2c address
 #define EMC2101_CHIP_ID 0x16         ///< EMC2101 default device id from part id
 #define EMC2101_ALT_CHIP_ID 0x28     ///< EMC2101 alternate device id from part id
@@ -87,4 +89,4 @@ uint16_t EMC2101_get_fan_speed(void);
 void EMC2101_init(bool);
 float EMC2101_get_external_temp(void);
 uint8_t EMC2101_get_internal_temp(void);
-#endif /* EMC2101_H_ */
\ No newline at end of file
+#endif /* EMC2101_H_ */
diff --git a/main/INA260.c b/main/INA260.c
index 68d223268..22bd4ddfb 100644
--- a/main/INA260.c
+++ b/main/INA260.c
@@ -4,14 +4,6 @@
 
 #include "INA260.h"
 
-#define I2C_MASTER_SCL_IO 48        /*!< GPIO number used for I2C master clock */
-#define I2C_MASTER_SDA_IO 47        /*!< GPIO number used for I2C master data  */
-#define I2C_MASTER_NUM 0            /*!< I2C master i2c port number, the number of i2c peripheral interfaces available will depend on the chip */
-#define I2C_MASTER_FREQ_HZ 400000   /*!< I2C master clock frequency */
-#define I2C_MASTER_TX_BUF_DISABLE 0 /*!< I2C master doesn't need buffer */
-#define I2C_MASTER_RX_BUF_DISABLE 0 /*!< I2C master doesn't need buffer */
-#define I2C_MASTER_TIMEOUT_MS 1000
-
 // static const char *TAG = "INA260.c";
 
 /**
@@ -67,4 +59,4 @@ float INA260_read_power(void)
     // ESP_LOGI(TAG, "Raw Power = %02X %02X", data[1], data[0]);
 
     return (data[1] | (data[0] << 8)) * 10;
-}
\ No newline at end of file
+}
diff --git a/main/INA260.h b/main/INA260.h
index 574164d3c..45cba1d9e 100644
--- a/main/INA260.h
+++ b/main/INA260.h
@@ -1,6 +1,8 @@
 #ifndef INA260_H_
 #define INA260_H_
 
+#include "i2c_params.h"
+
 #define INA260_I2CADDR_DEFAULT 0x40 ///< INA260 default i2c address
 #define INA260_REG_CONFIG 0x00      ///< Configuration register
 #define INA260_REG_CURRENT 0x01     ///< Current measurement register (signed) in mA
@@ -107,4 +109,4 @@ float INA260_read_current(void);
 float INA260_read_voltage(void);
 float INA260_read_power(void);
 
-#endif /* INA260_H_ */
\ No newline at end of file
+#endif /* INA260_H_ */
diff --git a/main/i2c_params.h b/main/i2c_params.h
new file mode 100644
index 000000000..3237213c7
--- /dev/null
+++ b/main/i2c_params.h
@@ -0,0 +1,12 @@
+#ifndef I2C_PARAMS_H_
+#define I2C_PARAMS_H_
+
+#define I2C_MASTER_SCL_IO 48        /*!< GPIO number used for I2C master clock */
+#define I2C_MASTER_SDA_IO 47        /*!< GPIO number used for I2C master data  */
+#define I2C_MASTER_NUM 0            /*!< I2C master i2c port number, the number of i2c peripheral interfaces available will depend on the chip */
+#define I2C_MASTER_FREQ_HZ 400000   /*!< I2C master clock frequency */
+#define I2C_MASTER_TX_BUF_DISABLE 0 /*!< I2C master doesn't need buffer */
+#define I2C_MASTER_RX_BUF_DISABLE 0 /*!< I2C master doesn't need buffer */
+#define I2C_MASTER_TIMEOUT_MS 1000
+
+#endif /* I2C_PARAMS_H_ */