diff --git a/examples/rp2/pio_1hz.py b/examples/rp2/pio_1hz.py
index 4b6fe95bb..84d761fa1 100644
--- a/examples/rp2/pio_1hz.py
+++ b/examples/rp2/pio_1hz.py
@@ -1,4 +1,5 @@
 # Example using PIO to blink an LED and raise an IRQ at 1Hz.
+# Note: this does not work on Pico W because it uses Pin(25) for LED output.
 
 import time
 from machine import Pin
diff --git a/examples/rp2/pio_exec.py b/examples/rp2/pio_exec.py
index 86018a93a..ce39f2df8 100644
--- a/examples/rp2/pio_exec.py
+++ b/examples/rp2/pio_exec.py
@@ -1,4 +1,5 @@
 # Example using PIO to turn on an LED via an explicit exec.
+# Note: this does not work on Pico W because it uses Pin(25) for LED output.
 #
 # Demonstrates:
 #   - using set_init and set_base
diff --git a/examples/rp2/pwm_fade.py b/examples/rp2/pwm_fade.py
index 7264edaa2..5b7089c6b 100644
--- a/examples/rp2/pwm_fade.py
+++ b/examples/rp2/pwm_fade.py
@@ -1,4 +1,5 @@
 # Example using PWM to fade an LED.
+# Note: this does not work on Pico W because it uses Pin(25) for LED output.
 
 import time
 from machine import Pin, PWM