RF74xxID: A passive RFID tag built entirely with 74xx logic chips. The tag supports the setting of any ID by means of DIP switches, can send data using two encoding schemes and has configurable baud rate.
The tag is powered by the EM field from the RFID reader. No batteries are needed.
Check out the video below.
Build something that uses or abuses a logic chip and get amazing boards, tools, and other swag. The Open 7400 Logic Competition promotes awareness of the basic building blocks of modern circuits. Devious geeks ignited the computer revolution with discrete logic computers, what can you do? Details and entry form here.
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