diff --git a/src/keyer.cpp b/src/keyer.cpp
index 785b805..07e8b6b 100644
--- a/src/keyer.cpp
+++ b/src/keyer.cpp
@@ -8,6 +8,7 @@
 extern const uint LED_PIN;
 extern const uint LEFT_PADDLE_PIN;
 extern const uint RIGHT_PADDLE_PIN;
+extern const uint CW_OUT_PIN;
 
 const uint SIDETONE_FREQ = 622;
 
@@ -69,6 +70,7 @@ void Keyer::run()
             m_currentlyKeying = true;
             m_keying_until = make_timeout_time_us(m_elementDuration);
             gpio_put(LED_PIN, 1);
+            gpio_put(CW_OUT_PIN, 1);
             m_Sidetone.on(SIDETONE_FREQ);
         } else {
             // If right paddle üressed -> note for Iambic B
@@ -80,6 +82,7 @@ void Keyer::run()
             if (absolute_time_diff_us(timestamp, m_keying_until) <= 0) {
                 m_currentlyKeying = false;
                 gpio_put(LED_PIN, 0);
+                gpio_put(CW_OUT_PIN, 0);
                 m_Sidetone.off();
                 m_previousState = State::Dit;
                 m_state = State::DitPause;
@@ -91,6 +94,7 @@ void Keyer::run()
             m_currentlyKeying = true;
             m_keying_until = make_timeout_time_us(m_elementDuration * 3);
             gpio_put(LED_PIN, 1);
+            gpio_put(CW_OUT_PIN, 1);
             m_Sidetone.on(SIDETONE_FREQ);
         } else {
             // If left paddle pressed -> Note for Iambic B
@@ -102,6 +106,7 @@ void Keyer::run()
             if (absolute_time_diff_us(timestamp, m_keying_until) <= 0) {
                 m_currentlyKeying = false;
                 gpio_put(LED_PIN, 0);
+                gpio_put(CW_OUT_PIN, 0);
                 m_Sidetone.off();
                 m_previousState = State::Dah;
                 m_state = State::DahPause;
@@ -150,6 +155,7 @@ void Keyer::run()
         break;
     case State::Abort:
         gpio_put(LED_PIN, 0);
+        gpio_put(CW_OUT_PIN, 0);
         m_Sidetone.off();
         m_keyNextIambicB = false;
         m_currentlyPausing = false;
diff --git a/src/raspi_keyer.cpp b/src/raspi_keyer.cpp
index 6ecd4c1..d672787 100644
--- a/src/raspi_keyer.cpp
+++ b/src/raspi_keyer.cpp
@@ -16,6 +16,7 @@ extern const uint LED_PIN = PICO_DEFAULT_LED_PIN;
 extern const uint LEFT_PADDLE_PIN = 14;
 extern const uint RIGHT_PADDLE_PIN = 15;
 extern const uint BUZZER_PIN = 18;
+extern const uint CW_OUT_PIN = 17;
 
 // Stuff for communicating between cores
 enum class KeyerQueueCommand {
@@ -46,8 +47,9 @@ void setup()
     gpio_init(RIGHT_PADDLE_PIN);
     gpio_set_dir(RIGHT_PADDLE_PIN, GPIO_IN);
     gpio_pull_up(RIGHT_PADDLE_PIN);
-
-    // sleep_ms(1000);
+    gpio_init(CW_OUT_PIN);
+    gpio_set_dir(CW_OUT_PIN, GPIO_OUT);
+    gpio_put(CW_OUT_PIN, 0);
 }
 
 /* Let's do all the keying stuff in the second core, so there are no timing problems. */