#20 Tutorial: Multiple Devices on One Arduino I2C Bus

This tutorial shows how you can connect many devices (sensors and displays) to one Arduino using the I2C bus. It starts with a simple hommade bus, shows how to find out the addresses of the different devices and ends with a demo of a system with three devices connected to an Arduino Uno: A BMP085 pressure sensor, a MPR121 touch sensor, and a SSD1306 OLED display.

The tutorial applies also for Attiny, ESP8266 and STM32 boards like the Maple Mini

Links:

Level Shifters: http://www.aliexpress.com/item/10pcs-lot-IIC-I2C-level-conversion-module-5V-to-3V-System-Compatible-Module-Dedicated-Free-Shipping/1368899581.html

I2C Scanner http://forum.arduino.cc/index.php?topic=197360

Example Sketch: https://github.com/SensorsIot/I2C_1-Video

Видео #20 Tutorial: Multiple Devices on One Arduino I2C Bus канала Andreas Spiess