안드로이드 연동 하드웨어 개발플래폼 IOIO OTG보드입니다.
일명 요요라고 발음함. 안드로이드폰 만으로도 엄청난 가능성이 있지만 주변 하드웨어와 연동되면 그 가능성은 무한해 집니다.

안내.  일반 핀홀간의 핀간격(pitch)은 2.54mm 이며,   전원연결용 2핀 JST 소켓의 내부핀간격은 2mm입니다. 편리한 전원연결을 위해 관련상품인 DC Jack 케이블을 참고하시기 바랍니다. JST커넥터에 전원을 연결하실 경우엔 5V보다 좀더 높은 전압원(가령 9V)을 사용하시기 바랍니다.  정전압 5V 전원을 사용하실경우엔 내장 레귤레이터에 의한 전압강하로 정상 인식이 안될 수 있으므로 JST커넥터 대신 5V 핀홀에 적절한 헤더 등을 납땜하여 연결하시기 바랍니다.

안드로이드 요요 보드(유사 모델) 사용법 한국어 안내문 링크

IOIO 활용 프로젝트 갤러리 

주의사항. 아래에 링크된 영문 자료들을 주의깊게 읽어보신 후 시작하시기 바랍니다. 

Description: Are you a Java developer looking to add advanced hardware I/O capabilities to your Android or PC application? Well then the IOIO-OTG is for you! The IOIO-OTG (pronounced “yo-yo-O-T-G”) is a development board specially designed to do just that. It features a PIC microcontroller which acts like a bridge that connects an app on your PC or Android device to low-level peripherals like GPIO, PWM, ADC, I2C, SPI, and UART. An app-level library helps you write control code for these low level peripherals in the same way you'd write any other Java app!

What separates the IOIO-OTG from previous IOIO boards is the ability to leverage the USB On-The-Go specification to connect as a host or an accessory. There are several ways to connect the IOIO to your Java app. If the app is running on your Android device, the IOIO-OTG will act as a USB host and supply charging current to your device (meaning the IOIO-OTG will need its own power source). If your app is running on a Windows, Linux or OSX machine, the IOIO-OTG will assume device mode and present itself as a virtual serial port. When in device mode, the IOIO-OTG can be powered by the host! Connecting a USB Bluetooth dongle will cause the IOIO-OTG to show up as a Bluetooth serial connection so you can go wireless!

A switch on the board can be used to force the IOIO-OTG into host mode, but most of the time the board can be left in 'auto' mode and it will detect its role in the connection. We're now shipping the IOIO-OTG board loaded with the V4.00 bootloader and the V3.30 application firmware. New application firmware is frequently released, and can be upgraded without needing a programmer using the IOIODude application.

The board includes a JST connector for attaching a LiPo battery and there are several pin headers broken out for voltage and ground access. A trimpot on the board allows you to adjust the charge current used when the IOIO-OTG is acting as a host. A USB-A to micro-A OTG cable is included which will let you connect your android device to the micro-USB port on the board using the cable that came with your android device.

Note: This product is a collaboration with Ytai Ben-Tsvi, who has elected to forfeit his product royalties to reduce the retail price. Thanks Ytai!

Includes:

• IOIO-OTG Development Board
• USB Female-A to Micro-A Cable

Documents:

• Schematic
• Eagle Files
• Application Note (Operating Modes)
• Beginner's Guide
• IOIO-OTG Wiki Home
• IOIODude Application
• IOIO Project Gallery
• IOIO OTG 보드 하드웨어 기본지식