Tiny Code Reader (TCR): A $7 Surprise
2025-07-23
The Tiny Code Reader (TCR) is a miniature QR code reader module costing just $7. Utilizing an RP2040 microcontroller and an Arducam image sensor, it connects easily via I²C. Testing revealed fast decoding, but a narrow field of view (approx. 10mm) limits its application. Despite this, its low cost and ease of use make it a compelling development platform, especially for desktop manufacturing and similar applications.
Read more
Hardware
QR code reader