The PCF8574_LH library provides a simple interface for controlling the PCF8574 I/O expander using the I2C communication protocol. It allows you to read and write values to the PCF8574's registers, ...

Let’s see how it works in-depth. Arduino connects to the WiFi Hotspot - First of all, Arduino makes it connect to the existing WiFi network using wifi credentials. So that Arduino is able to ...

This project includes a 12-button keypad interfaced with a host MCU via I2C or UART, designed to serve as a mini keyboard for embedded systems. The STM32L010K4T6 handles debouncing and key scanning, ...