Hi there;

Had all my code working on the weekend, but now it alternately passes and fails the nano.check function, and sometimes comes up with an unknown error; as below:
8.478 -> Bad CRC
19:21:28.478 -> nano check failed
19:21:30.438 -> nano.check Suceeded
19:21:30.438 -> Unknown errornano check failed
19:21:32.453 -> nano.check Suceeded
19:21:32.453 -> Unknown errornano check failed
19:21:34.422 -> nano.check Suceeded
19:21:34.422 -> Unknown errornano check failed
19:21:36.438 -> nano.check Suceeded
19:21:36.438 -> Bad CRC

Sometimes it does work, but often will detect "bad CRC" when there are no tags nearby, and often when a tag is at readable range.

Using Bluno (Arduino Uno) to communicate. Seems to only work now at 115200 baud; other baud rates don't seem to communicate properly any more.

What could be causing these problems? Please help! Need this working for a University project :(

Reading multiple RFID tags.docx