# 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.

**2 device listed.**

## DC Boarduino

The DC Boarduino is a slim, breadboard-friendly Arduino-compatible development board based on the ATmega328 at 16MHz, with a 2.1mm DC barrel jack for 7–17V input, USB-TTL serial header, ICSP programming port, and a form factor optimized for direct breadboard insertion.

[Details](https://openhardware.directory/devices/dc-boarduino) | [Markdown](https://openhardware.directory/devices/dc-boarduino/md)

## Arduino Mega ADK

The Arduino Mega R3 ADK is an ATmega2560-based development board with 54 digital I/O, 16 analog inputs, 4 hardware UARTs, and a USB Type-A host port (Android ADK) with a power boost converter — designed for interfacing with Android smartphones as a USB host for accessory development.

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