diff --git a/crop-farm/startup.lua b/crop-farm/startup.lua
index 1e2d1ae..d41eed8 100644
--- a/crop-farm/startup.lua
+++ b/crop-farm/startup.lua
@@ -3,6 +3,12 @@ print("Hold Crtl+T to cancel")
 sleep(15)
 
 while true do
+  if not redstone.getInput("back") then
+    print("Awaiting redstone signal")
+  end
+  while not redstone.getInput("back") do
+    sleep(1)
+  end
   shell.run("farm")
   
   for i = 10, 1, -1 do