diff --git a/config.h b/config.h
--- a/config.h
+++ b/config.h
@@ -1,7 +1,7 @@
 #ifndef CONFIG_H
 #define CONFIG_H
 
-
+#define VCP_TX_FREQ 1000
 #define SSR_PERIOD 200
 
 #define LED_POWER GPIOF,GPIO_PIN_0