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Tags: electronics* + diy* + image* + qr code*

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1. Tiny Code Reader: a $7 QR code sensor

   A review of the Tiny Code Reader, a $7 QR code sensor, detailing its setup, functionality with I2CDriver, limitations (tight centering requirement), and internal components (RP2040 microcontroller and Arducam image sensor).

   2025-07-26 Tags: qr code, sensor, tiny code reader, rp2040, i2cdriver, electronics, diy, hardware, image, sensors, qwiic, stemma, grove by klotz

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