This articles describes how you can use I2C (TWI) communication, Arduino and temperature sensors to measure 3 different temperatures. It can be very helpful when you want to measure the outside, ...

[Johngineer] found himself in need of an I2C sniffer, but didn’t have one available. Necessity is the mother of invention, so he put together this I2C sniffer sketch for Arduino. The arduino ...

PN532 NFC RFID Module (v3) * NFC Tag Quick Test Code v1 * Based on an example code from PN532 Arduino Library * Tailored for I2C & Arduino Uno * Remember to set mode switch of PN532 module to I2C! * T ...

Since the ST24C04 512-byte device in question has an I 2 C bus it’s a straightforward add-on for an Arduino Mega ... and some sample code. It’s not the most complex of projects, but it ...