Electrical Engineering News, Resources, and Community | EEWeb Electronics Lab - Home Welcome - Fritzing t r o n i x s t u f f Practical Arduino: News How to Connect Multiple Arduino Microcontrollers with I2C Use I2c to connect several Arduinos together to combine their power. I2C stands for the Inter Integrated Circuits and is one of the best Multi Master Serial Computer Bus technologies used in different systems to connect the peripherals of low speed data transmission. The technology was invented by Philips for TVs but is used in all sorts of applications including our Wiimote and Arduino tutorial. The I2C circuits follow a standard operational procedure where only two bi-directional lines, a serial clock, and a serial data systems are used.  There are recently improved versions of I2Cs available on the market which can hold a higher number of nodes and can perform faster than the rest. Don’t miss: Top 40 Arduino Projects of the Web You can use I2C then you will be able to connect more than one Arduino to a robot or other application and you can easily establish a network of sensors. How To Set Up Your I2C
Introduction to I2C In this article Grinan Barrett introduces us to I2C. Grinan explains how I2C works, provides many useful links to information related to I2C and example Arduino code for a robot project where multiple Arduino boards are used for sensing and control. Grinan submitted this article to uCHobby as part of the uCHobby Giveaway program. What is I2C? I²C uses only two bidirectional open-drain lines, Serial Data (SDA) and Serial Clock (SCL), pulled up with resistors. The I²C reference design has a 7-bit address space with 16 reserved addresses, so a maximum of 112 nodes can communicate on the same bus. The maximum number of nodes is limited by the address space, and also by the total bus capacitance of 400 pF, which restricts practical communication distances to a few meters. Wikipedia Definition What exactly does the I2C protocol and usage mean to the average robot builder? A simple I2C network setup Setting up and using i2c · Two or more Arduino · The latest Arduino IDE · 2 – 1.5k pull up resistors
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