Useful Sensors Tiny Code Reader

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.