> **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 # Ultra-Slim Round Fingerprint Sensor and 6-pin Cable **Type:** Product page · **SKU:** ADA4750 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia) **Page:** https://core-electronics.com.au/ultra-slim-round-fingerprint-sensor-and-6-pin-cable.html ([markdown](https://core-electronics.com.au/ultra-slim-round-fingerprint-sensor-and-6-pin-cable.html.md)) Secure your project with biometrics - this adorably tiny, all-in-one, optical fingerprint sensor will make adding fingerprint detection and verification super simple. It's extremely slim, with a plastic casing that can be glued or panel mounted into any enclosure! There are some embedded blue LEDs that light up the outer casing when the sensor is waiting for finger touches. ## Pricing - **Price:** $34.20 (inc GST) — $31.09 AUD, exc GST - **Quantity discounts:** 10+ $30.15 (exc GST) · 50+ $29.54 (exc GST) ## Availability & dispatch - Out of stock — the product page offers email notification when it returns. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=ADA4750:1` (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/ADA4750:1.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 Secure your project with biometrics - this adorably tiny, all-in-one, optical fingerprint sensor will make adding fingerprint detection and verification super simple. It's extremely slim, with a plastic casing that can be glued or panel mounted into any enclosure! There are some embedded blue LEDs that light up the outer casing when the sensor is waiting for finger touches. These modules are typically used in safes - there's a high powered DSP chip that does the image rendering, calculation, feature-finding, and searching. Connect to any microcontroller or system with TTL serial, and send packets of data to take photos, detect prints, hash, and search. You can also enroll new fingers directly - **up to 80 fingerprints** can be stored in the onboard FLASH memory. It also comes with a 6-pin Molex-style 1mm pitch connector, which you can easily cut off and solder directly to the wires. You can solder and heatshrink the included tinned pigtails, or crimp them with 0.1" housings like [those from Pololu's range](https://core-electronics.com.au/connectors-sockets/crimp-connector-housings.html) But, of course, Adafruit wouldn't leave you a manual and a "good luck!" - Adafruit have written both an [**Arduino library**](https://github.com/adafruit/Adafruit-Fingerprint-Sensor-Library) and [**CircuitPython library**](https://github.com/adafruit/Adafruit_CircuitPython_Fingerprint) so that you can get running in under 10 minutes. The library can enroll and search so it's perfect for any project. [Adafruit have also written a detailed tutorial on wiring and use of these types fingerprint sensors](https://learn.adafruit.com/adafruit-optical-fingerprint-sensor). Use this pin-out to connect to your microcontroller, and then use Adafruit's library to interface over UART pins. **This sensor now uses 57600 baud but some older versions were set to 115200 baud rather than the 'standard' 57600 used by many other sensors,** so you may need to update the examples to 115200 baud for the sensor to respond (just try both!) - Black to GND - Yellow to Microcontroller TX (data *out* from microcontroller) - Green to Microcontroller RX (data *in* from microcontroller) - Red to 3.3V VIN - White to IRQ (can leave disconnected) - Blue to 3.3V VCC (can leave disconnected) ## Technical Details [Datasheets, software, wiring examples and more all in the Learning System guide](https://learn.adafruit.com/adafruit-optical-fingerprint-sensor/downloads) - Sensor diameter: 20.8mm - Cable assembly length: ~100mm **Revision History:** - **As of May 21, 2021** - the sensor has been changed to 57600 baud instead of 115200 baud default ## Guides for this product - [Fingerprint Scanner with Raspberry Pi Single Board Computer - Unlock with Biometrics!](https://core-electronics.com.au/guides/raspberry-pi/fingerprint-scanner-raspberry-pi/) ## Videos for this product - [Fingerprint Scanner with Raspberry Pi Single Board Computer - Unlock with Biometrics!](https://core-electronics.com.au/videos/fingerprint-scanner-with-raspberry-pi-single-board-computer-unlock-with-biometrics) ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/4/7/4750-02.jpg)