In 1834, he went to the Exhibition of Industry to exhibit his dot alphabet

In 1834, Louis Braille decided to bring his code to the Exhibition of Industry, which is one of the most interesting facts about Louis Braille. All inventions should be shown here for the whole public to see. He practiced his alphabet by taking notes during conversations. Then, he was able to read them back. The French king observed Louis' innovation when he was at the exhibition, but he decided against making it the official language for the blind. The dot alphabet books weren't going to cost the monarch any money, either.

Louis was disappointed that his innovation wouldn't be made available to other blind people when he got home from the Paris Industrial Exhibition. He had had intermittent fatigue during the past few years. He occasionally also experienced a fever and a nasty cough. He got worse. His physician diagnosed him with consumption, or what is now known as tuberculosis. Rest and fresh air were the only treatments available at the time for this illness.

Louis gave fewer lectures and spent more time outside. He kept enhancing the dot alphabet. He added the letter "w" so that English could be written using his code. He also toiled at producing math books for blind students.