At the heart of modern electronics lies what is known as Analogue to Digital Conversion (ADC). This blog post will cover the general concepts of analogue and digital signals, the fundamentals of ADC and move on to the technicalities of using a Microcontroller Unit (MCU) to perform a conversion. Finally, some sample code will be provided to demonstrate a specific application. No previous knowledge of electronics is assumed for the first few sections, however, the difficulty will increase gradually as we look at the intricacies of ADC and dive into embedded logic.