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Arduino I2C Modules

Hans-Jürgen Dinges edited this page Sep 18, 2017 · 1 revision

Arduino I2C-Bus Modules

Prerequisites

Note: Gateways can be used separately. Follow this Link for a quick overview about all Modules and possible Combinations.

Tested Modules for the I2C-Bus Addon:

Module Purpose Where to Buy (examples) Additional Library
BME280 Temperature, Humidity and Pressure Aliexpress, Adafruit, Sparkfun SparkFun BME280 library
BH1750 Light / Ambience Aliexpress

Hardware setup

Connect the following pins:

I2C Module Arduino Uno
Vcc 5V
GND GND
SCL A5
SDA A4
ADD N/C (Not Connected)

Before connecting the Power Pins check the voltage that your sensor can accept (5V or 3,3V) and connect it to the corresponding power supply pin

Addon_I2C-Bus

Software setup

Uncomment the wiring for I2C wiring and comment the other wiring

#define I2C_Wiring

//#define Classic_Wiring

in user_config.h

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