Keypad phones, believe it or not, are still in use, and there is a surprising amount of variety to choose from. Some of the phones include 4G connectivity, cameras, and are built to last. If you ...

Based on the Arduino Pro Micro, this hand-wired pad is unique in that a single press of any of its 16 keys can virtually “type” out multiple lines of text. In this case, it’s a capability ...

1.与Arduino共用生态，降低学习门槛，简化开发过程。 2.关键部分使用了 寄存器+宏 的优化方式，减少函数调用开销，提升运行效率。 3.简化的Arduino框架，相对stm32duino与HAL库，拥有更小的代码体积、更快的编译和执行速度。

This project aims to empower users to lead a healthier and safer lifestyle.

The LNL-CK lenel command keypad integrates a 32 backlit LCD display with a 16 position keypad and reader port. The command keypad serves as a command reader - a reader from which user commands can be ...