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The newest Arduino USB Host Shield from ALSRobot allows you to connect a USB device to your Arduino board.The Arduino USB Host Shield is based on the MAX3421E,which is a USB peripheral/host controller containing the digital logic and analog circuitry necessary to implement a full-speed USB peripheral or a full-/low-speed host compliant to USB specification rev 2.0. The shield is TinkerKit compatible,which means you can quickly create projects by plugging TinkerKit modules onto the board.The following device classes are supported by the shield: HID devices, such as keyboards, mice, joysticks, etc.


  • Operating Voltage:5V
  • USB Controller:MAX3421E
  • Max Current:500mA when Arduino is powered by a suitable power supply connected to the Arduino power jack
  • Max Current:400mA when Arduino is powered by its USB port
  • Input and Output:This shield has a FEMALE USB port where you can attach your USB device.The shield features several TinkerKit input/output and communication interfaces. Connecting TinkerKit modules can simplify the creation of a project or a prototype. The on-board connectors are:2 TinkerKit Inputs: IN2 and IN3 (in white), these connectors are routed to the Arduino A2 and A3 analog input pins.2 TinkerKit Outputs: OUT5 and OUT6 (in orange), these connectors are routed to the Arduino PWM outputs on pins 5 and 6.2 TinkerKit TWI: these connectors (4-pin in green) are routed on the Arduino TWI interface. Both connect to the same TWI interface to allow you to create a chain of TWI devices.


The maximum length and width of the Motor Shield PCB are 2.7 and 2.1 inches respectively. Four screw holes allow the board to be attached to a surface or case. Note that the distance between digital pins 7 and 8 is 160 mil (0.16"), not an even multiple of the 100 mil spacing of the other pins.

Following device classes are supported by the shield:​

  • HID devices: keyboards, mice, joysticks, etc.
  • Game controllers: Sony PS3, Nintendo Wii, Xbox360.
  • USB to serial converters: FTDI, PL-2303, ACM, as well as certain cell phones and GPS receivers.
  • ADK-capable Android phones and tables.
  • Digital cameras: Canon EOS, Powershot, Nikon DSLRs and P&S, as well as generic PTP.
  • Mass storage devices: USB sticks, memory card readers, external hard drives, etc.
  • Bluetooth dongles.


EAGLE files:arduino-usb-host-shield-reference-design.zip

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