Seeeduino Cloud

Overview

The Seeeduino Cloud is an Arduino Yun-compatible development board from Seeed Studio that combines the ATmega32u4 microcontroller with the Dragino HE WiFi IoT module — a Linux-based system running OpenWRT on an Atheros AR9331 SoC. This dual-processor architecture allows the Arduino side to handle real-time I/O while the Linux side manages networking, cloud connectivity, and more complex logic.

The board provides 802.11 b/g/n WiFi on 2.4GHz, an Ethernet port, and a USB-A host port through the Dragino HE module, all accessible from the Arduino environment via the Bridge library. This makes it easy to push sensor data to web services, run shell scripts from sketches, or use the board as a lightweight IoT gateway.

The ATmega32u4 runs at 16MHz at 5V and provides 14 digital I/O pins (7 PWM), 6 analog inputs, and hardware Serial, I2C, and SPI. The board is pin-compatible with standard Arduino shields, extending its capabilities with the vast Arduino ecosystem of add-on boards.

Seeeduino Cloud is well suited for projects that bridge the physical world and the internet: data loggers, home automation nodes, sensor gateways, and remote monitoring applications where the combination of real-time microcontroller code and Linux networking capabilities is valuable.