open-source

Qwiic RFID reader carrier

An ATtiny84A turns a separately purchased ID-LA 125 kHz RFID reader module into an I²C interface with scan buffering, interrupts and audible feedback.

Remix this board → View source on GitHub ↗

License: CC BY-SA 4.0
Source revision: v1.0 · REVISION A · SEN-15191
Last mirror: Sep 10, 2026
Git commit: 78989e5954a6

About Qwiic RFID reader carrier

An ATtiny84A turns a separately purchased ID-LA 125 kHz RFID reader module into an I²C interface with scan buffering, interrupts and audible feedback. Original two-layer design for adaptation to ViaGrid; rerouting and testing are required.

Published design files

Wireless & connected · two copper layers
Open source (CC BY-SA 4.0) · Elias Santistevan / SparkFun Electronics
Mirrored at 78989e5954a6

Canonical source stays in the upstream git repository (and in WalGit after a successful mirror push). Generated renders and 3D models use artifacts/viagrid/qwiic-rfid-reader/78989e5954a674eb3848a7ec43b353622003aab9/3046f865572e5847 on the artifact CDN and are not checked into git.