I’ve altered my arduino code to read RFID tags from two different reads. This has caused some major problems. At first they refused to work and after some research and tinkering I discovered that if the readers are too close to each other they bug out and will not read anything. The distance that they will both work at is around 15cm which is an issue. I need three of them to work within 2cm of each other.
My first idea to solve this was to provide some shielding between them. Tests ranged from metal, tinfoil and anti-static bags. I even tried a slightly crazy method of diluted salt water. None of these worked and turning the readers on one after another did not work either.
I came to the conclusion that I could waste a lot of my Make Mark One time trying to get this method to work or I could alter my design to accommodate just one reader. I went with the latter.