diff --git a/src/pwmout.c b/src/pwmout.c
--- a/src/pwmout.c
+++ b/src/pwmout.c
@@ -2,10 +2,13 @@
 // PWM Out: generate PWM waveform to control factory
 //
 
+#include "stm32f3xx_hal.h"
 #include "pwmout.h"
 #include "gpio.h"
 #include "flash.h"
+#include "error.h"
 
+TIM_HandleTypeDef htim17;
 
 static uint32_t last_ssr_on = 0;
 
@@ -13,14 +16,69 @@ static uint32_t last_ssr_on = 0;
 void pwmout_init(void)
 {
 	GPIO_InitTypeDef GPIO_InitStruct;
+    __HAL_RCC_TIM17_CLK_ENABLE();
+    __HAL_RCC_GPIOB_CLK_ENABLE();
 
 	// Configure LED GPIO pins
 	GPIO_InitStruct.Pin = SSR_PIN;
-	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; //GPIO_MODE_AF_PP;
 	GPIO_InitStruct.Pull = GPIO_NOPULL;
 	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+//    GPIO_InitStruct.Alternate = GPIO_AF1_TIM17;
 	HAL_GPIO_Init(SSR_GPIO_Port, &GPIO_InitStruct);
 
+
+	TIM_OC_InitTypeDef sConfigOC;
+	TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig;
+
+	htim17.Instance = TIM17;
+	htim17.Init.Prescaler = 6000;
+	htim17.Init.CounterMode = TIM_COUNTERMODE_UP;
+	htim17.Init.Period = 1000;
+	htim17.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
+	htim17.Init.RepetitionCounter = 0;
+	if (HAL_TIM_Base_Init(&htim17) != HAL_OK)
+	{
+		error_assert(ERR_PERIPHINIT);
+	}
+
+	if (HAL_TIM_OC_Init(&htim17) != HAL_OK)
+	{
+		error_assert(ERR_PERIPHINIT);
+	}
+
+	sConfigOC.OCMode = TIM_OCMODE_TOGGLE; //TIM_OCMODE_PWM1;
+	sConfigOC.Pulse = 200;
+	sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
+	sConfigOC.OCNPolarity = TIM_OCNPOLARITY_LOW;
+	sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
+	sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
+	sConfigOC.OCNIdleState = TIM_OCIDLESTATE_SET;
+	if (HAL_TIM_OC_ConfigChannel(&htim17, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
+	{
+		error_assert(ERR_PERIPHINIT);
+	}
+
+	sBreakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE;
+	sBreakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE;
+	sBreakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF;
+	sBreakDeadTimeConfig.DeadTime = 0;
+	sBreakDeadTimeConfig.BreakState = TIM_BREAK_DISABLE;
+	sBreakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_HIGH;
+	sBreakDeadTimeConfig.BreakFilter = 0;
+	sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE;
+	if (HAL_TIMEx_ConfigBreakDeadTime(&htim17, &sBreakDeadTimeConfig) != HAL_OK)
+	{
+		error_assert(ERR_PERIPHINIT);
+	}
+
+    HAL_NVIC_SetPriority(TIM1_TRG_COM_TIM17_IRQn, 0, 0);
+    HAL_NVIC_EnableIRQ(TIM1_TRG_COM_TIM17_IRQn);
+
+
+	HAL_TIM_OC_Start_IT(&htim17, TIM_CHANNEL_1);
+    __HAL_TIM_ENABLE_IT(&htim17, TIM_IT_UPDATE);
+
 }
 
 
@@ -28,36 +86,42 @@ void pwmout_init(void)
 // functionality. this is a problem.
 
 // also duty cycling isn't working correctly...
-void pwmout_process(float duty)
+void pwmout_process(uint16_t duty)
 {
 
-	uint32_t ssr_output = duty; // meh
-
-	// Kill SSR once the desired on-time has elapsed
-	if(flash_getsettings()->val.control_mode == MODE_PID && ((HAL_GetTick() - last_ssr_on > ssr_output) || ssr_output <= 0))
-	{
-		HAL_GPIO_WritePin(SSR, 0);
-		HAL_GPIO_WritePin(LED, 0);
-	}
-
+	htim17.Instance->CCR1 = duty;
+//	HAL_GPIO_TogglePin(SSR_GPIO_Port, SSR_PIN);
 
-	// Every 200ms, set the SSR on unless output is 0
-	if(flash_getsettings()->val.control_mode == MODE_PID && HAL_GetTick() - last_ssr_on > SSR_PERIOD)
-	{
-		// Heat or cool, if we need to
-		if(ssr_output > 0)
-		{
-			HAL_GPIO_WritePin(SSR, 1);
-			HAL_GPIO_WritePin(LED, 1);
-			last_ssr_on = HAL_GetTick();
-		}
-		else {
-			// Make sure everything is off
-			HAL_GPIO_WritePin(SSR, 0);
-			HAL_GPIO_WritePin(LED, 0);
-		}
-
-	}
+//	uint32_t ssr_output = duty; // meh
+//
+//	// Kill SSR once the desired on-time has elapsed
+//	if(flash_getsettings()->val.control_mode == MODE_PID && ((HAL_GetTick() - last_ssr_on > ssr_output) || ssr_output <= 0))
+//	{
+//		HAL_GPIO_WritePin(SSR, 0);
+//		HAL_GPIO_WritePin(LED, 0);
+//	}
+//
+//
+//	// Every 200ms, set the SSR on unless output is 0
+//	if(flash_getsettings()->val.control_mode == MODE_PID && HAL_GetTick() - last_ssr_on > SSR_PERIOD)
+//	{
+//		// Heat or cool, if we need to
+//		if(ssr_output > 0)
+//		{
+//			HAL_GPIO_WritePin(SSR, 1);
+//			HAL_GPIO_WritePin(LED, 1);
+//			last_ssr_on = HAL_GetTick();
+//		}
+//		else {
+//			// Make sure everything is off
+//			HAL_GPIO_WritePin(SSR, 0);
+//			HAL_GPIO_WritePin(LED, 0);
+//		}
+//
+//	}
 }
 
-
+TIM_HandleTypeDef* pwmout_get_tim(void)
+{
+	return &htim17;
+}