QR code

Thermal printer technology has revolutionised receipt printing in retail, healthcare, and IoT projects. This comprehensive ESP32 thermal printer tutorial covers how to interface popular thermal printers, such as the PNP-500, with ESP32 and Arduino microcontrollers. Whether you're building an ESP32 receipt printer, barcode printer, or QR code printing system,…

​QR codes have become essential in our daily lives, from making UPI payments to sharing social media handles QR codes can now be found in almost every shop and business today. Integrating QR code scanning into our projects is a useful and practical feature that enables us to build many exciting projects like smart shopping cart projects, Vending machine projects etc. However, using traditional…

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Over the past years we at CircuitDigest have built a ton of electronics projects and tutorials to help our community to learn and build electronics with ease. Recently we have noticed a huge interest from readers on our ESP32-CAM Projects, especially the ones involving image recognition and object detection. Since the board is capable of taking images and…

QR code (Quick Response code) is a type of matrix barcode that contains information about the item to which it is attached, like location data, identifier, or a tracker that identifies a website or app, etc. It is a machine-readable optical label in the form of a 2D image with a unique pattern. To learn more about QR codes and how to generate a QR code, follow our previous…

The "Quick Response" code or abbreviated as QR code has become an essential part of our digital lives, chances are that you're already subconsciously familiar with them by now you've probably been roaming around your local grocery store, or maybe you are reading through your favourite book, or even possibly you are making an online payment with Google Pay, PhonePe or Paytm,…