diff --git a/platformio.ini b/platformio.ini
index a926263..1a18b7a 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -8,16 +8,17 @@
 ; Please visit documentation for the other options and examples
 ; https://docs.platformio.org/page/projectconf.html
 
-[env:pico]
+[env:debug]
 platform = https://github.com/maxgerhardt/platform-raspberrypi.git
 board = pico
 framework = arduino
 board_build.core = earlephilhower
 debug_tool = cmsis-dap
 
-[env:picow]
+[env:release]
 platform = https://github.com/maxgerhardt/platform-raspberrypi.git
-board = rpipicow
+board = pico
 framework = arduino
 board_build.core = earlephilhower
 debug_tool = cmsis-dap
+build_flags = -DNDEBUG
diff --git a/src/main.cpp b/src/main.cpp
index 36e4416..6af868a 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -130,7 +130,7 @@ static void reflect_state(NxamfGamepadState *state)
     async_led_on_for_100ms();
 
     mutex_enter_blocking(&d_mutex);
-    
+
     d.report.y = (uint8_t)state->y;
     d.report.b = (uint8_t)state->b;
     d.report.a = (uint8_t)state->a;
@@ -293,6 +293,20 @@ void setup()
 
     pinMode(LED_BUILTIN, OUTPUT);
     digitalWrite(LED_BUILTIN, LOW);
+
+    // Blink if the setup routine succeeded.
+    digitalWrite(LED_BUILTIN, HIGH);
+    delay(200);
+    digitalWrite(LED_BUILTIN, LOW);
+    delay(200);
+    digitalWrite(LED_BUILTIN, HIGH);
+    delay(200);
+    digitalWrite(LED_BUILTIN, LOW);
+    delay(200);
+    digitalWrite(LED_BUILTIN, HIGH);
+    delay(200);
+    digitalWrite(LED_BUILTIN, LOW);
+    delay(200);
 }
 
 void loop()