Comments on: Sr. Design: RFID

By: Dennis

Dennis — Wed, 02 Nov 2011 04:41:17 +0000

Besides… what would be the fun of designing if I were to simply “hand-over” the source. You gotta’ work for it, man!

By: Dennis

Dennis — Fri, 31 Jul 2009 21:24:16 +0000

See the Manchester Decoding section of our code? Now, what fun would THAT be? For our purposes, we didn’t do the decoding on the Arduino. We thought about it, but decided to offload that work to a separate application we wrote using Processing… which is the basis for the Arduino’s java-like code.

The first step is getting the BIG picture on how to decode Manchester. In code, it is a finite state machine and even hobbyist should be able to understand that concept. In fact, if you can sketch a finite state diagram that mimics Manchester Decoding, then you are WELL on your way to make it work. In the end, Manchester Decoding is a bit of a bugger, so I am not surprised that you are having some difficulty.

By: suby

suby — Wed, 29 Jul 2009 22:48:04 +0000

I’m trying to start an Arduino-based RFID reader with this EM4095. At the moment, it is just a hobby.

My main problem is that I cannot get a good frame from it: sometimes there are aliasing problems (because of the Arduino functions) or software problems inside the Arduino.

Can you let me have a look at the Manchester Decoding section of your code?

My e-mail is mailto:sammarcoarmengol@gmail.com.

Thanks!