Sometime ago I started working on the Make Magazine Charlie's Bear for my son. I had to put it on hold while I focused on some projects at work and having another son. Well I'm back at the project and now and having some issues. When i put the project on hold I had the code done and on the Arduino Uno, wave shield, and RFID antenna attached and working. Now I can not get the RFID reader to pickup any tags. I have checked all connects and used sample codes from around the net and I can not get any feedback from the parallax.
any ideas on why it would just stop working?