IntroductionIn today's fast-paced technological landscape, the demand for portable devices is at an all-time high. From smartphones to wearable technology, users expect longer battery life without compromising performance. One of the key components that can significantly influence battery longevity

What is the PCF8574 LCD Module?The PCF8574 is an I/O expander that connects to microcontrollers via the I2C protocol. It allows you to control multiple devices with just two wires, significantly reducing the number of pins needed on your Arduino board. This feature makes it ideal for projects where