diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index cae3133a..0a78bad8 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -18,7 +18,7 @@
 // This code is an Arduino sketch for the Raspberry Pi Pico
 // based on the Raspberry Pi Code
 
-//#define PICO_0V1 // define for Pico v0.1 hardware
+#define PICO_0V1 // define for Pico v0.1 hardware
 
 #include "cubesatsim.h"
 #include "DumbTXSWS.h"
@@ -83,7 +83,7 @@ void setup() {
 	
 // otherwise, run CubeSatSim Pico code
   
-  Serial.println("CubeSatSim Pico v0.21 starting...\n");
+  Serial.println("CubeSatSim Pico v0.15 starting...\n");
 	
   config_gpio();