Research all aspect of RFID design pertaining to the project
Create a preliminary design
preliminary design complete
Acquire all parts necessary for project
parts acquired, including: Atmel CPU, EM4095 RFID Front-End, 18F452 (prototype #1)
Build a working RFID access control system with the Parallax hardware
Used test-bed to capture EM4100 RFID card data
Data analyzed (100% certain of Manchester encoding)
Build a custom one-off RFID reader that can read the Parallax RFID cards
Design reads EM4100 family card data
Reads Manchester encoded data using a known header (start of data)
Design the firmware for the custom reader, to run on a PIC microcontroller
Design captures RFID data
Design PC software to interface with our custom reader and store raw data
software will not only read our captured data, but read RFID tag files encoded for a particular RFID tag.
Build a custom one-off RFID writer to send back the raw data to the Parallax system, to simulate the RFID card that the data was captured from
Arduino (Atmega168) code is full-functiona: reads and writes Parallax RFID cards.
Test system with RFID cards and readers in Seamens Center (assuming the building uses 125 KHz system)
Initial data confirms 125kHz system
Initial data implies (2 to 4) 125kHz cycles per bit period.
Research implies 84 data bits for the HID RFID cards (Prox II)
Current Arduino software reads the HID cards. Data rate is rather high, which is causing a buffer-overflow in the current Arduino (Atmega168) code. Currently re-arranging code to reduce issues with the high data-rate.
Modify hardware, PIC firmware, and PC software to optimize system stability and performance
Package system into a finished product
Prototype #1 is complete
Prototype #2 will incorporate bread-board design of Prototype #1, but with an actual PC Board. The PC Board will not be built until kinks are worked out with the Arduino (Atmega168). The PC Board is complete and will be built and tested over the weekend of May 2, 2008.
Prototype #3 will incorporate modifications of Prototype #2. No modifications are needed. The PC board is solid.
Prototype #3 is now considered the final draft of the RFID project. Schematic is being finalized and should be sent to the Engineering Shop by the end of April 2008. NOTE! Schematic is complete, with the PC board sent to the Engineering Shop the last week of April.
If time permits, add functionality to interface with 13.56 MHz systems as well
Concept abandoned due to time-constraints.
Will focus on fully realized design
Showcase system to customer
Currently looking for a final demonstration the second week of May.
Short demonstration has already been completed before Dave Quackenbush (the Teaching Assistant for Senior Design). Dave had little to add, other than looking forward to our final presentation.