diff --git a/main_+lcd.py b/main_+lcd.py
index e46a824..dc01ee4 100644
--- a/main_+lcd.py
+++ b/main_+lcd.py
@@ -18,12 +18,17 @@ def lora_pingpong_resp():
     import lora_pingpong
     lora_pingpong.run_lcd_resp()
     gc.collect()
+def led_test_run():
+    import led_test
+    led_test.run()  # run the led blink test (blink twice)
+    gc.collect()
 
 programs = {
     "simplereceiver": lora_receiver_run,
     "simplesender": lora_sender_run,
     "pingpong_init": lora_pingpong_init,
     "pingpong_resp": lora_pingpong_resp,
+    "led_test": led_test_run,
     }
 
 pc = ProgramChooser(programs, 7, 8, debug=True)
diff --git a/main_-lcd.py b/main_-lcd.py
index 364b15b..df781ea 100644
--- a/main_-lcd.py
+++ b/main_-lcd.py
@@ -1,8 +1,12 @@
 from simplelora import sender, receiver
+import led_test
 import lora_pingpong
 
 to_run = 0  # 0: ping-pong as responder | 1: ping-pong as initializer | 2: sender | 3: receiver
 
+
+led_test.run()  # run the led blink test (blink twice)
+
 if to_run == 0:
     lora_pingpong.run_wo_lcd_resp()
 if to_run == 1: