The teenager managed to just scrape a place into the final in which he could only clock a time of 30.94s.
"The aim was to make the final and I did that. It was good, there were a few little blips but that is racing for you," said Carter.
"Overall I am happy. It was a personal best and I made the final at my first time of asking at a Paralympics. Being at home is the best way to make a Paralympic debut.
"I have experienced the crowd out there now and it is not going to be a big shock when I get back out there. I have got the 100m on Saturday and will go back and rest and get ready for that. The aim of the Games was to make both finals and if I do that I will be happy."