> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Useful Sensors Tiny Code Reader

**Type:** Product page · **SKU:** SEN-23352 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/useful-sensors-tiny-code-reader.html ([markdown](https://core-electronics.com.au/useful-sensors-tiny-code-reader.html.md))

The Tiny Code Reader from Useful Sensors is smaller than a quarter, very low cost, and connects through Qwiic...

## Pricing

- **Price:** $15.30 (inc GST) — $13.91 AUD, exc GST
- **Quantity discounts:** 5+ $13.49 (exc GST) · 25+ $13.22 (exc GST) · 100+ $12.65 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 31 and Sep 07.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN-23352:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
- **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/SEN-23352:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.)
- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

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](https://github.com/usefulsensors/tiny_code_reader_docs/blob/main/README.md), 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.

### Documents

- [Developer Guide](https://usfl.ink/tcr_dev)
- [Datasheet](https://usfl.ink/tcr_ds)
- [Demo Video](https://youtu.be/huM_E0uhmwA)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/S/E/SEN-23352-1.jpg)