# QR Code Scanner Pi

**URL:** <https://forum.core-electronics.com.au/t/qr-code-scanner-pi/13611>\
**Category:** Raspberry Pi\
**Created:** [30 March 2022 01:44 UTC](https://forum.core-electronics.com.au/t/qr-code-scanner-pi/13611 "2022-03-30T01:44:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Brian47128](https://yyz2.discourse-cdn.com/flex028/user_avatar/forum.core-electronics.com.au/brian47128/32/6499_2.png) [@Brian47128](https://forum.core-electronics.com.au/u/Brian47128)\
**Post date:** [30 March 2022 01:44 UTC](https://forum.core-electronics.com.au/t/qr-code-scanner-pi/13611/1 "2022-03-30T01:44:03Z")

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I’m looking at making a device to link QR codes to and RFID tag. I’ve seen 4 different readers that all look capable, I’m looking for advice to decide between them (I’d rather not buy one of each and try them all out).

> **[Gravity: Ring 2D QR Code Scanner](https://core-electronics.com.au/gravity-ring-2d-qr-code-scanner.html)**
>
> This highly-integrated QR code scanner with excellent performance can recognize common 1D codes and 2D codes. Operating at 3.3V/5V, the scanner is...

> **[SparkFun 2D Barcode Scanner Breakout](https://core-electronics.com.au/sparkfun-2d-barcode-scanner-breakout.html)**
>
> The SparkFun 2D Barcode Scanner Breakout is a nifty little breakout board featuring the DE2120 barcode scanner module from DYScan. The DE2120 reads 20 different .. read more

> **[CM65 QR & Barcode Scanner Module](https://core-electronics.com.au/cm65-qr-barcode-scanner-module.html)**
>
> This CM65 code scanner module can accurately read the barcode or QR code on paper or screen at high speed (about 1s) even in the poorly-lit environment. By using .. read more

> **[GM77 Barcode and QR Code Scanning Module](https://core-electronics.com.au/gm77-barcode-and-qr-code-scanning-module.html)**
>
> This scanning module reads bar codes or 2D codes with scan speed of 15m/min. With small size and high-efficiency recognition, it is easy to be integrated...

I’ll be using the device to scan 2d barcodes outside in sunlight, as well as darker locations inside.  
I intend to interface the unit with a raspberry pi (probably the zero w) using TTL serial.

Has anyone had any experience with these scanners?

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**Author:** ![Liam](https://yyz2.discourse-cdn.com/flex028/user_avatar/forum.core-electronics.com.au/liam/32/3562_2.png) [@Liam](https://forum.core-electronics.com.au/u/Liam)\
**Post date:** [6 April 2022 07:00 UTC](https://forum.core-electronics.com.au/t/qr-code-scanner-pi/13611/2 "2022-04-06T07:00:06Z")

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Hi Brian,

Welcome to the forum, very sorry about the delay!

Personally I dont have any experience with these camera’s but if you have specific questions then we’re more than happy to jump in and do some research!

A few of them seem to have an ambient light spec in the description which will be relevant for your ever changing environment!

Liam