diff --git a/README.md b/README.md
index 78d3fd7..468ebd9 100644
--- a/README.md
+++ b/README.md
@@ -72,7 +72,7 @@ datasheet: https://www.vishay.com/docs/82459/tsop48.pdf
 ### Pi Pico pin:
 
 - pin 16 - IR RX
-- pin 17 - IR TX
+- pin 17 - IR TX - 22R - IR LED OSRAM SFH4544
 
 - pin 18 - button
 - pin 19 - button