If you’ve ever been laying out a network I2C devices inside a project box or throughout your robot’s body, you’ll probably know that I2C is not without its pitfalls. But for many of those pitfalls, ...

I2C is a two-wire communication protocol known for its simplicity. Despite this reputation, I2C does have its challenges: a limited number of bits for a unique address can create address conflicts, or ...

In my last column [LJ, December 2003], we discussed how I2C bus drivers and I2C algorithm drivers work. We also described how to make a tiny dummy I2C bus driver. This month, we discuss how an I2C ...

The I2C (Inter-Integrated Circuit) Bus invented in 1980 by Philips Semiconductors (NXP Semiconductors today) was a massive step forward in simplifying communications in embedded systems. It is a ...

Many readers will be familiar with interfacing I2C peripherals. A serial line joins a string of individual I2C devices, and each of the devices has its own address on that line. In most cases when ...

The objective of the I2C-Tiny-USB project is to provide a cheap and generic I2C interface to be attached to the USB. The hardware of the I2C-Tiny-USB interface consists of the Atmel AVR ATtiny45 CPU ...

An Inter-IC bus is often used to communicate across circuit-board distances. Here’s a primer on the protocol. At the low end of the spectrum of communication options for “inside the box” communication ...

A new open source controller has been created called the I²CDriver by Excamera Labs, specifically designed to provide easy control over I²C devices. Watch the demonstration video below for a overview ...

The circuit shown can be used to interface multiple serial devices to the I2C bus, even if they lack the extended-addressing capability required. Information transfer be-tween I2C devices connected to ...

In the June and August 2003 issues of Linux Journal, my column covered the Linux kernel driver model, and the I2C subsystem was used as an example. This month, we discuss what the I2C subsystem does ...