App note: Transponder coils in an RFID system

A short application note from Coilcraft about transponder coils. Link here (PDF) Radio Frequency Identification (RFID) is the system of using radio signals to send information identifying a particular situation or item. It can be used to track and locate any item including material, people and animals. The RFID transponder coil is part of the […]

Tutorial: RFID tags with the NXP NFC controller PN7120 and Eclipse

Erich Styger writes: Playing with RFID and NFC is definitely fun?, and they are everywhere! For a research project I’m exploring different RFID tags and solutions. I several types around for a long time, but never found the time to actually work on it, so last nightI thought I give it a try, and I […]

Arduino RFID login

Luke has published a new build: I wanted a simple way of quickly logging on to my computer without having to typing my password in and did not want to have no security either. There are various products on the market that would solve this problem from fingerprint readers to proximity dongles but i decided […]

Automatic feeder mod makes cat work for food

Here’s a cool automatic feeder for your cat that dispense food in exchange for a wiffle ball by Benjamin Millam.  He wrote a post on his blog detailing its assembly: I used an Adafruit RFID reader to detect RFID tags embedded in the wiffle balls: the balls are cut slightly, enough to slip in an […]

A stand-alone access control with RFID

Boris of Open Electronics wrote an article on his stand-alone access control with RFID project: RFID Tags are increasingly used for many applications such as identifying objects by means of a code or access control. In logistics RFIDs allows asset tracking, or monitoring conveyor belts; in shops tags are often used as anti theft. RFIDs are […]

Ambient Backscatter – Wireless power and communication with no batteries

Ambient Backscatter – Wireless power and communication with no batteries Ambient Backscatter transforms existing wireless signals into both a source of power and a communication medium. It enables two battery-free devices to communicate by backscattering existing wireless signals. Backscatter communication is orders of magnitude more power-efficient than traditional radio communication. Further, since it leverages the […]

OpenBeacon – An open source active RFID project

OpenBeacon is a comprehensive open source platform for active RFID applications operating in the license free 2.4GHz ISM band. The project involves base station hardware, as well as active tag hardware. OpenBeacon is based on Open Source software and a very flexible and reprogrammable lowcost Open Source RFmodule. The firmware sources and hardware schematics are […]

Read and write 13.56 MHz RFID cards

Read and write 13.56 MHz RFID cards with OpenPCD: OpenPCD is a free hardware design for Proximity Coupling Devices (PCD) based on 13,56MHz communication. This device is able to screen informations from Proximity Integrated Circuit Cards (PICC) conforming to vendor-independent standards such as ISO 14443, ISO 15693 as well as proprietary protocols such as Mifare […]

Logic Sniffer: Hacking cheap RFID readers

Aaron decided to hack a cheap USB RFID reader, by using the Logic Sniffer to figure out the internal IC protocol. To make it useful for his projects he decided to hijack the internal bus that has the initial RFID decoding. After some poking around he was able to find the UART TX transmitting pin. […]

nRF24LE1 low power single chip wireless data

The nRF24LE1 is a single chip radio that can be used with a microcontroller for low power wireless stuff.  It has lots of extras like an ultra low power analog comparator for voltage level system wake-up. Nordic Semiconductor provides an RF protocol stack and applications for microcontrollers. Via MDFLY.