diff --git a/src/pwmout.c b/src/pwmout.c
new file mode 100644
--- /dev/null
+++ b/src/pwmout.c
@@ -0,0 +1,49 @@
+//
+// PWM Out: generate PWM waveform to control factory
+//
+
+#include "pwmout.h"
+#include "flash.h"
+
+
+static uint32_t last_ssr_on = 0;
+static uint32_t last_vcp_tx = 0;
+static uint32_t last_led = 0;
+
+
+void pwmout_init(void)
+{
+
+}
+
+void pwmout_process(float duty)
+{
+
+	//        // Kill SSR once the desired on-time has elapsed
+	//        if(set.val.control_mode == MODE_PID && (HAL_GetTick() - last_ssr_on > ssr_output || ssr_output <= 0))
+	//        {
+	//            HAL_GPIO_WritePin(SSR_PIN, 0);
+	//            HAL_GPIO_WritePin(LED_POWER, 0);
+	//        }
+	//
+	//
+	//        // Every 200ms, set the SSR on unless output is 0
+	//        if(set.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_PIN, 1);
+	//                HAL_GPIO_WritePin(LED_POWER, 1);
+	//                last_ssr_on = HAL_GetTick();
+	//            }
+	//            else {
+	//                // Make sure everything is off
+	//                HAL_GPIO_WritePin(SSR_PIN, 0);
+	//                HAL_GPIO_WritePin(LED_POWER, 0);
+	//            }
+	//
+	//        }
+}
+
+