Quote Originally Posted by oneohthree View Post
I find that sometimes when I connect by wire it doesn't work. Sometimes my wireless connection works if I first connect the wire remove it and then I reconnect my wireless connection it works again. I'm not sure if the serout is not working correctly or the serin is not working correctly.
Sounds like a goofy ground wire/connection somewhere, induced capacitance, missing pullup or pulldown, etc., maybe a sloppy PCB.
Are you working on a solderless breadboard?