Search results for: “avrfid”
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AVRFID 1.1 Firmware
I don’t normally write bloggy posts on every version of every source file I check in, but every so often an older project sees some more activity, and I love the opportunity to revisit software I wrote years ago. Sometimes I wonder why I wrote such-and-such thing that way and oh my god what an…
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AVR RFID, Optimized and Ported to C
Way back in 2008, I posted a writeup about using an AVR microcontroller as an RFID tag. Since then, it’s been great to see many people pick up this code and build their own DIY RFID tags. In my original project, I was just interested in using an AVR as a way of emulating any…
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Duct tape RFID tag #1
This is just a messy first prototype, but I recently tried making an AVRFID tag on a substrate of duct tape. The first attempt involved: An upside-down strip of duct tape, as the base for everything else to stick atop 100 turns of AWG 40 magnet wire around a ~66mm diameter form, which I then…
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Using an AVR as an RFID tag
Experiments in RFID, continued… Last time, I posted an ultra-simple “from scratch” RFID reader, which uses no application-specific components: just a Propeller microcontroller and a few passive components. This time, I tried the opposite: building an RFID tag using no application-specific parts. Well, my solution is full of dirty tricks, but the results aren’t half…