This compatibility is maintained on a software level as well – all necessary code changes are performed using conditional compilation preprocessor directives.Ĩ、USB connector has been moved to the opposite side of the board. Standard size boards, such as Duemilanove, UNO, as well as clones with classic connector layout, are also compatible with this revision of the shield. Android Open Accessory support overcomes this limitation and allows you to build accessories that can interact with an assortment of Android-powered devices by allowing the accessory to initiate the connection.Īrduino ADK Shield For Android V2.3 with Arduino Mega2560ġ、Supports Android Mobile Phone：G1, Nexus One, Nexus S, Motorola Droid X with Android v2.3.4 and above devicesĢ、Arduino Mega 2560、Arduino Uno 328、Arduino Diecimila/Duemilanove 328 CompatibleĦ、Support USB HOST mode，support HUB protocolħ、The SPI interface has been moved to ICSP header making shield compatible out of the box with “big” Arduinos – Mega and 2560. Many previously released Android-powered devices are only capable of acting as a USB device and cannot initiate connections with external USB devices. Accessories must also provide 500mA at 5V for charging power. When an Android-powered powered device is in accessory mode, the connected accessory acts as the USB host (powers the bus and enumerates devices) and the Android-powered device acts as the device.Īndroid USB accessories are specifically designed to attach to Android-powered devices and adhere to a simple protocol (Android accessory protocol) that allows them to detect Android-powered devices that support accessory mode. The Android 3.1 platform (also backported to Android 2.3.4) introduces Android Open Accessory support, which allows external USB hardware (an Android USB accessory) to interact with an Android-powered device in a special 'accessory' mode.

Official arduino usb host shield