SparkFun

Useful Sensors Tiny Code Reader

Name: Useful Sensors Tiny Code Reader
Brand: SparkFun
SKU: SF-SEN-23352
Price: 18.6 AUD
Availability: InStock

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QR codes are a great way for users to communicate with microcontrollers, whether it’s passing WiFi credentials to set up connectivity or sending personal inf...

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QR codes are a great way for users to communicate with microcontrollers, whether it’s passing WiFi credentials to set up connectivity or sending personal information to fill out a digital badge. Reading them from a maker project didn’t used to be easy though. You’d either needed a large and relatively expensive standalone module, or your own software solution on a board with a camera.

The Tiny Code Reader from Useful Sensors is smaller than a quarter, very low cost, and connects through Qwiic. This makes it the perfect add-on for all kinds of projects that could benefit from text input, but don’t have a keyboard or touch screen. Since QR codes are also easy to share over email, text, or even paper, they can also be used as passwords for access control on security-minded products.

It comes with a comprehensive developer guide, which includes example code for popular systems like Arduino, Raspberry Pi, Pico W, CircuitPython, and MicroPython, along with complete project tutorials for Wifi provisioning, keyboard input, and display updating.

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Videos

Jargon buster

Plain-language definitions for the technical terms used above.

CircuitPython: A beginner-friendly version of Python designed to run directly on microcontroller boards. If a product supports CircuitPython, you can often program it by copying code files onto the board rather than setting up a more complex toolchain.
MicroPython: A version of the Python programming language made to run on microcontrollers. It matters because it lets beginners write readable code to control LEDs, sensors, motors and displays without needing to start with lower-level languages.
Qwiic: Qwiic is a plug-in connector system for I2C devices that uses small 4-pin cables, so you can connect compatible sensors without soldering. It matters because your controller or adapter also needs Qwiic, or you will need a cable or breakout to wire it up.