diff --git a/main/DS4432U.c b/main/DS4432U.c
index 450c794..0b3a961 100644
--- a/main/DS4432U.c
+++ b/main/DS4432U.c
@@ -87,7 +87,7 @@ esp_err_t i2c_master_delete(void) {
  * @brief Read a sequence of I2C bytes
  */
 static esp_err_t register_read(uint8_t reg_addr, uint8_t *data, size_t len) {
-    return i2c_master_write_read_device(I2C_MASTER_NUM, DS4432U_SENSOR_ADDR, &reg_addr, 1, data, len, I2C_MASTER_TIMEOUT_MS / portTICK_RATE_MS);
+    return i2c_master_write_read_device(I2C_MASTER_NUM, DS4432U_SENSOR_ADDR, &reg_addr, 1, data, len, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
 }
 
 /**
@@ -97,7 +97,7 @@ static esp_err_t register_write_byte(uint8_t reg_addr, uint8_t data) {
     int ret;
     uint8_t write_buf[2] = {reg_addr, data};
 
-    ret = i2c_master_write_to_device(I2C_MASTER_NUM, DS4432U_SENSOR_ADDR, write_buf, sizeof(write_buf), I2C_MASTER_TIMEOUT_MS / portTICK_RATE_MS);
+    ret = i2c_master_write_to_device(I2C_MASTER_NUM, DS4432U_SENSOR_ADDR, write_buf, sizeof(write_buf), I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
 
     return ret;
 }
diff --git a/main/EMC2101.c b/main/EMC2101.c
index 08b0d54..da620c0 100644
--- a/main/EMC2101.c
+++ b/main/EMC2101.c
@@ -18,7 +18,7 @@ static const char *TAG = "EMC2101.c";
  * @brief Read a sequence of I2C bytes
  */
 static esp_err_t register_read(uint8_t reg_addr, uint8_t *data, size_t len) {
-    return i2c_master_write_read_device(I2C_MASTER_NUM, EMC2101_I2CADDR_DEFAULT, &reg_addr, 1, data, len, I2C_MASTER_TIMEOUT_MS / portTICK_RATE_MS);
+    return i2c_master_write_read_device(I2C_MASTER_NUM, EMC2101_I2CADDR_DEFAULT, &reg_addr, 1, data, len, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
 }
 
 /**
@@ -28,7 +28,7 @@ static esp_err_t register_write_byte(uint8_t reg_addr, uint8_t data) {
     int ret;
     uint8_t write_buf[2] = {reg_addr, data};
 
-    ret = i2c_master_write_to_device(I2C_MASTER_NUM, EMC2101_I2CADDR_DEFAULT, write_buf, sizeof(write_buf), I2C_MASTER_TIMEOUT_MS / portTICK_RATE_MS);
+    ret = i2c_master_write_to_device(I2C_MASTER_NUM, EMC2101_I2CADDR_DEFAULT, write_buf, sizeof(write_buf), I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
 
     return ret;
 }
diff --git a/main/INA260.c b/main/INA260.c
index 44ede35..f079eaa 100644
--- a/main/INA260.c
+++ b/main/INA260.c
@@ -18,7 +18,7 @@ static const char *TAG = "INA260.c";
  * @brief Read a sequence of I2C bytes
  */
 static esp_err_t register_read(uint8_t reg_addr, uint8_t *data, size_t len) {
-    return i2c_master_write_read_device(I2C_MASTER_NUM, INA260_I2CADDR_DEFAULT, &reg_addr, 1, data, len, I2C_MASTER_TIMEOUT_MS / portTICK_RATE_MS);
+    return i2c_master_write_read_device(I2C_MASTER_NUM, INA260_I2CADDR_DEFAULT, &reg_addr, 1, data, len, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
 }
 
 /**
@@ -28,7 +28,7 @@ static esp_err_t register_write_byte(uint8_t reg_addr, uint8_t data) {
     int ret;
     uint8_t write_buf[2] = {reg_addr, data};
 
-    ret = i2c_master_write_to_device(I2C_MASTER_NUM, INA260_I2CADDR_DEFAULT, write_buf, sizeof(write_buf), I2C_MASTER_TIMEOUT_MS / portTICK_RATE_MS);
+    ret = i2c_master_write_to_device(I2C_MASTER_NUM, INA260_I2CADDR_DEFAULT, write_buf, sizeof(write_buf), I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
 
     return ret;
 }
diff --git a/main/oled.c b/main/oled.c
index 680c1bc..368bd7a 100644
--- a/main/oled.c
+++ b/main/oled.c
@@ -289,7 +289,7 @@ bool OLED_status(void) {
 static esp_err_t write(uint8_t *data, uint8_t len) {
     int ret;
 
-    ret = i2c_master_write_to_device(I2C_MASTER_NUM, 0x3C, data, len, 1000 / portTICK_RATE_MS);
+    ret = i2c_master_write_to_device(I2C_MASTER_NUM, 0x3C, data, len, 1000 / portTICK_PERIOD_MS);
 
     return ret;
 }
\ No newline at end of file
diff --git a/main/system.c b/main/system.c
index acd2654..7a804ff 100644
--- a/main/system.c
+++ b/main/system.c
@@ -34,12 +34,12 @@ void init_system(void) {
     ADC_init();
 
     //DS4432U tests
-    DS4432U_set_vcore(1.4);
+    DS4432U_set_vcore(1.2);
     
     //Fan Tests
     EMC2101_init();
-    EMC2101_set_fan_speed(0.75);
-    vTaskDelay(500 / portTICK_RATE_MS);
+    EMC2101_set_fan_speed(0);
+    vTaskDelay(500 / portTICK_PERIOD_MS);
 
     //oled
     #ifdef USE_OLED
@@ -99,6 +99,6 @@ void SysTask(void *arg) {
 
     while(1){
         get_stats();
-        vTaskDelay(5000 / portTICK_RATE_MS);
+        vTaskDelay(5000 / portTICK_PERIOD_MS);
     }
 }
\ No newline at end of file