In the 19th century, Linus Yale Jr.’s cylinder lock transformed home security, creating a mass-market solution so durable that millions still use it today. For decades, not much changed. A lock was ...

You can open the imposing Alfred DB2S smart lock with a PIN, an RFID card, the Alfred app, or a key. So, why leave out ...

This paper introduces an Arduino-based color-sorting conveyor belt system that automates object sorting by color. Employing a TCS3200 color sensor, an Arduino microcontroller detects red, green, and ...

Learn how to interface ESP32 thermal printer with complete tutorial. Includes PNP-500 wiring, Arduino code, circuit diagrams, and projects for receipt printing, barcodes, and QR codes. Perfect for ...

This project implements a password-protected door lock system using an Arduino microcontroller. The system utilizes a 4x4 matrix keypad for password input and an electronic lock mechanism controlled ...

A new unlock system on select Cricket devices has the unfortunate side effect of blocking Developer Options.

Pull requests help you collaborate on code with other people. As pull requests are created, they’ll appear here in a searchable and filterable list. To get started, you should create a pull request ...