diff --git a/Core/Src/main.cpp b/Core/Src/main.cpp
index 6eedf3a..5c2a04a 100644
--- a/Core/Src/main.cpp
+++ b/Core/Src/main.cpp
@@ -24,6 +24,7 @@ extern "C" {
 /* USER CODE BEGIN Includes */
 //#include <stdio.h>
 } // end extern "C"
+#include <cstdint>
 #include <cstdio>
 #include <cstring>
 /* USER CODE END Includes */
@@ -37,14 +38,6 @@ extern "C" {
 /* USER CODE BEGIN PD */
 #define Print2UART1 int __io_putchar(int data) // prints to serial monitor
 
-int duty;
-/*
- * We are going to set this value repeatedly as such:
- *            CCR
- * DC(%) = ----------- * 100
- *           ARR + 1
- */
-
 /* USER CODE END PD */
 
 /* Private macro -------------------------------------------------------------*/
@@ -61,7 +54,16 @@ UART_HandleTypeDef huart1;
 
 /* USER CODE BEGIN PV */
 uint16_t rawValue;
+float val;
 float volts;
+float duty;
+/*
+ * We are going to set this value repeatedly as such:
+ *            CCR
+ * DC(%) = ----------- * 100
+ *           ARR + 1
+ */
+
 
 /* USER CODE END PV */
 
@@ -128,21 +130,30 @@ main(void)
     rawValue = HAL_ADC_GetValue(&hadc1);
     printf("ADC raw value: %hu\r\n", rawValue);
 
-    HAL_Delay(500);
+    val = (float)rawValue;
+    printf("ADC float value: %f\r\n", val);
 
-    volts = ((float)rawValue / 4096) * 3; // convert to voltage from 0 to 3.0
+    //HAL_Delay(500);
+
+    //volts = (float)(((float)rawValue / 4096) * 3); // convert to voltage from 0 to 3.0
+    volts = (val/4096)*3;
     printf("Voltage: %fV\r\n", volts);
 
-    HAL_Delay(500);
+    //HAL_Delay(500);
 
-    duty = ((float)rawValue / 4096) * 65534;
+    //duty = (((float)rawValue / 4096) * 65534);
+    duty = (val/4096)*65534;
+    printf("Duty: %f\r\n", duty);
 
     __HAL_TIM_SET_COMPARE(&htim1, TIM_CHANNEL_1, duty); 
 
-    HAL_Delay(500);
+    //printf("\r\n");
+
+    HAL_Delay(1000);
     /* USER CODE END WHILE */
 
     /* USER CODE BEGIN 3 */
+    printf("\x1B[2J\x1B[H"); // ANSI: clear tty
   }
   /* USER CODE END 3 */
 }
diff --git a/Makefile b/Makefile
index 33d717d..7bf3681 100644
--- a/Makefile
+++ b/Makefile
@@ -158,7 +158,7 @@ LDSCRIPT = STM32F429XX_FLASH.ld
 # libraries
 LIBS = -lc -lm -lnosys 
 LIBDIR = 
-LDFLAGS = $(MCU) -specs=nano.specs -T$(LDSCRIPT) $(LIBDIR) $(LIBS) -Wl,-Map=$(BUILD_DIR)/$(TARGET).map,--cref -Wl,--gc-sections
+LDFLAGS = $(MCU) -specs=nano.specs -u _printf_float -T$(LDSCRIPT) $(LIBDIR) $(LIBS) -Wl,-Map=$(BUILD_DIR)/$(TARGET).map,--cref -Wl,--gc-sections
 
 # default action: build all
 all: $(BUILD_DIR)/$(TARGET).elf $(BUILD_DIR)/$(TARGET).hex $(BUILD_DIR)/$(TARGET).bin