diff --git a/cubesatsim/cubesatsim.ino b/cubesatsim/cubesatsim.ino
index 4b147341..ad094d99 100644
--- a/cubesatsim/cubesatsim.ino
+++ b/cubesatsim/cubesatsim.ino
@@ -147,7 +147,6 @@ void setup() {
 
   camera_detected = false; // start_camera();	
 
-  start_isr();
 //  start_pwm();
 	
 /**/
@@ -160,6 +159,8 @@ void setup() {
 	
   config_telem();	
 	
+  start_isr();	
+	
 // setup radio depending on mode 
   config_radio();