Seamless Arduino‑Raspberry Pi 2 I2C Integration for IoT Sensor Projects
In many IoT projects, Arduino shines as the ideal platform for sensor interfacing, thanks to its vast library ecosystem and straightforward hardware setup. While the Raspberry Pi offers a richer operating system and broader connectivity options, combining the two can deliver the best of both worlds: Arduino handles the low‑level sensor communication, and the Pi manages data processing, storage, and network communication.
Overview
Arduino’s ready‑to‑go libraries, such as the DHT library available on GitHub, simplify sensor integration. The Raspberry Pi’s comprehensive OS and native support for I2C make it an excellent intermediary for higher‑level tasks. This guide walks through a simple I2C link between an Arduino and a Raspberry Pi 2, enabling you to offload sensor handling to the Arduino while using the Pi for data aggregation and cloud connectivity.
The hardware connection is straightforward: connect the ground (GND) pins together, link SDA to SDA, and SCL to SCL. Refer to the schematic below and the accompanying Fritzing file for a visual reference.
For detailed instructions, consult the full article: Arduino I2C communication with Raspi 2 WIOT.
Manufacturing process
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