And our Arduino boards can control them all. Here is a nice introductory video from NXP:Īs there are literally thousands of components that use the I2C interface. This reduced the number of wires to two (SDA – data, and SCL – clock). In the late 1970s, Philips’ semiconductor division (now NXP) saw the need for simplifying and standardising the data lines that travel between various integrated circuits in their products. I2C is an acronym for “Inter-Integrated Circuit”. Furthermore it would be in your interest to have an understanding of the binary, binary-coded decimal and hexadecimal number systems. In this article we will learn the necessary theory, and then apply it by controlling a variety of devices. The I2C bus can be a complex interface to master, so we will do my best to simplify it for you. In this first of several tutorials we are going to investigate the I2C data bus, and how we can control devices using it with our Arduino systems.
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