I would put serial print statements at the beginning and ending of all your functions: "1s", "1e", "2s" etc - the last item that shows up when it locks up is then the point you can put even more serial print statements...
I would put serial print statements at the beginning and ending of all your functions: "1s", "1e", "2s" etc - the last item that shows up when it locks up is then the point you can put even more serial print statements...