diff --git a/Add-own-functionality.md b/Add-own-functionality.md
index e9656c7..923887e 100644
--- a/Add-own-functionality.md
+++ b/Add-own-functionality.md
@@ -22,4 +22,21 @@ col[1] | byte (0-255) | Green color value
 col[2] | byte (0-255) | Blue color value
 white | byte (0-255) | White color value
 
-After updating the color, you must call the `colorUpdated(int)` method. If you want to send a notification with the new color to other ESPs, use `colorUpdated(1)`, otherwise `colorUpdated(5)`.
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+After updating the color, you must call the `colorUpdated(int)` method. If you want to send a notification with the new color to other ESPs, use `colorUpdated(1)`, otherwise `colorUpdated(5)`.
+
+### Timing
+
+If you'd just like a simple modification that requires timing (like sending a request every 2 seconds), please **never** use the `delay()` function in your `userLoop()`! It will block everything else and WLED will become unresponsive and effects won't work! Instead, try this instead:
+```
+long lastTime;
+int delayMs = 2000; //we want to do something every 2 seconds
+
+void userLoop()
+{
+  if (millis()-lastTime > delayMs)
+  {
+    lastTime = millis();
+    //do something you want to do every 2 seconds
+  }
+}
+```
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