SparkFun RFID Qwiic Reader

The SparkFun RFID Qwiic Reader is a straightforward I²C based RFID breakout board compatible with the ID-3LA, ID-12LA, and ID-20LA readers. This device allows you to easily scan 125kHz ID tags, displaying the unique 32-bit ID on the screen. The reader is equipped with a read LED and buzzer, with a jumper option to disable the buzzer if desired. The device uses the Qwiic system for easy, solder-free connection to your system, but also includes 2.54mm-spaced pins for breadboard use.

The Qwiic RFID, powered by an onboard ATtiny84A, adds a timestamp to the six-byte ID tag of your 125kHz RFID card and stores it on a stack that can hold up to 20 unique RFID scans. This data can be conveniently accessed via simple I²C commands.

Please note that the I²C address of the RFID Reader is 0x7D and can be jumper-selected to 0x7C (software-configurable to any address). To communicate with multiple SHTC3 sensors on a single bus, a multiplexer/Mux is necessary. If you plan to use more than one RFID Reader sensor, consider using the Qwiic Mux Breakout.

The SparkFun Qwiic Connect System is a robust ecosystem of I²C sensors, actuators, shields, and cables designed to make prototyping quicker and less error-prone. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector, which minimizes required PCB space and ensures correct, polarized connections.

Keep in mind that this product does not come with the RFID reader. Please check for compatible readers.

For guidance on how to get started with the SparkFun RFID Qwiic, refer to the SparkFun RFID Qwiic Guide. You can also access the product's schematic, Eagle Files, Hookup Guide, Arduino Library, Python Package, and GitHub from the provided links.