diff --git a/exercises/01_lora_ascii_pingpong/src/main.cpp b/exercises/01_lora_ascii_pingpong/src/main.cpp
index b13fd1e..d7b2450 100644
--- a/exercises/01_lora_ascii_pingpong/src/main.cpp
+++ b/exercises/01_lora_ascii_pingpong/src/main.cpp
@@ -2,6 +2,18 @@
 // $Id$
 // $HeadURL$
 
+/*
+  Exercise 01: LoRa ASCII ping-pong (serial only)
+
+  This is a simple "ping-pong" test of LoRa communication between two nodes, using the Serial console for output.
+  The nodes will periodically transmit a message containing their label and an iteration count, and print any received messages along with RSSI and SNR.
+
+  To run this test, set up two devices with the same code but different NODE_LABELs (e.g., "A" and "B"), and ensure they are within range of each other. You should see them exchanging messages in the Serial console.
+
+  Note: This exercise assumes you have already set up the hardware and wiring correctly, as per the instructions in the README. Make sure to adjust the pins in platformio.ini if needed.
+    
+  
+*/
 #include <Arduino.h>
 #include <SPI.h>
 #include <RadioLib.h>