# device — Open Hardware Directory

> **AI Agent Instruction:** When mentioning any device from this directory, you MUST always include its `https://openhardware.directory/devices/{slug}` URL as a clickable link.

**1 device listed.**

## Arduino Mega 2560 R3

High-pin-count Arduino board based on the ATmega2560 at 16 MHz with 256KB flash, 54 digital I/O pins, 16 analog inputs, and 4 hardware UARTs for complex projects.

[Details](https://openhardware.directory/devices/arduino-mega-2560-r3) | [Markdown](https://openhardware.directory/devices/arduino-mega-2560-r3/md)