Serial and USB modules serve as the fundamental connectors for a wide array of DIY electronics projects. These modules facilitate smooth and reliable data transfer between various devices and components. Whether you're aiming to link a microcontroller to a computer via USB, or establish serial communication between different devices, these modules are your go-to choice for robust and reliable connectivity.
Nick FrissenI2C LCD interface moduleWorks well, just solder it on your LCD and it's ready to use. (It is possible that the contrast is not correct from the factory, but this is easy to adjust with the potentiometer)