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| Arduino Robot US Plug OverviewThe Arduino Robot is the first official Arduino on wheels. The robot has two processors, one on each of its two boards. The?Motor Board?controls the motors, and the?Control Board?reads sensors and decides how to operate. Each of the boards is a full Arduino board programmable using the Arduino IDE. Both Motor and Control boards are microcontroller boards based on the?ATmega32u4?(datasheet). The Robot has many of its pins mapped to on-board sensors and actuators. Programming the robot is similar to the process with the Arduino Leonardo. Both processors have built-in USB communication, eliminating the need for a secondary processor. This allows the Robot to appear to a connected computer as a virtual (CDC) serial / COM port. As always with Arduino, every element of the platform ? hardware, software and documentation ? is freely available and open-source. This means you can learn exactly how it's made and use its design as the starting point for your own robots. The Arduino Robot is the result of the collective effort from an international team looking at how science can be made fun to learn. Arduino is now on wheels, come ride with us! Control Board Summary
 Motor Board Summary
  Schematic & Reference DesignEAGLE files for control and motor boards:?arduino-robot-reference-design.zip PowerThe Arduino Robot can be powered via the USB connection or with 4 AA batteries. The power source is selected automatically. The battery holder holds 4 rechargeable?NiMh?AA batteries. NB : Do not use non-rechargeable batteries with the robot For safety purposes, the motors are disabled when the robot is powered from the USB connection. The robot has an on-board battery charger that requires 9V external power coming from an AC-to-DC adapter (wall-wart). The adapter can be connected by plugging a 2.1mm center-positive plug into the Motor Board's power jack. The charger will not operate if powered by USB. The Control Board is powered by the power supply on the Motor Board. MemoryThe?ATmega32u4?has 32 KB (with 4 KB used for the bootloader). It also has 2.5 KB of SRAM and 1 KB of EEPROM (which can be read and written with the?EEPROM library). The Control Board has an extra 512 Kbit EEPROM that can be accessed via?I2C. There is an external SD card reader attached to the GTFT screen that can be accessed by the Control Board's processor for additional storage. Input and OutputThe Robot comes with a series of pre-soldered connectors. There are a number of additional spots for you to install additional parts if needed. All the connectors are labelled on the boards and mapped to named ports through the?Robot library?allowing access to standard Arduino functions. Each pin can provide or receive a maximum of 40mA at 5V. Some pins have specialized functions :
Control Board Pin Mapping
Motor Board Pin Mapping
CommunicationThe Robot has a number of facilities for communicating with a computer, another Arduino, or other microcontrollers. The?ATmega32U4?provides UART TTL (5V) serial communication, which is available on digital the 10-pin board-to-board connector. The 32U4 also allows for serial (CDC) communication over USB and appears as a virtual com port to software on the computer. The chip also acts as a full speed USB 2.0 device, using standard USB COM drivers.?On Windows, a .inf file is required. The Arduino software includes a serial monitor which allows simple textual data to be sent to and from the Robot board. The RX (LED1) and TX?LEDs?on the board will flash when data is being transmitted via the USB connection to the computer (but not for serial communication between boards). Each one of the boards has a separate USB product identifier and will show up as different ports on you IDE. Make sure you choose the right one when programming. The?ATmega32U4?also supports?I2C?(TWI) and SPI communication. The Arduino software includes a Wire library to simplify use of the?I2C?bus; see the?documentation?for details. For SPI communication, use the?SPI library. ProgrammingThe Robot can be programmed with the Arduino software (download). Select "Arduino Robot Control Board" or "Arduino Robot Motor Board" from the?Tools > Board?menu. For details, see the?getting started page?and?tutorials. The?ATmega32U4?processors on the Arduino Robot come preburned with a?bootloader?that allows you to upload new code to it without the use of an external hardware programmer. It communicates using the?AVR109?protocol. You can bypass the bootloader and program the microcontroller through the ICSP (In-Circuit Serial Programming) header; see?these instructions?for details. Automatic (Software) Reset and Bootloader InitiationRather than requiring a physical press of the reset button before an upload, the Robot is designed in a way that allows it to be reset by software running on a connected computer. The reset is triggered when the Robot's virtual (CDC) serial / COM port is opened at 1200 baud and then closed. When this happens, the processor will reset, breaking the USB connection to the computer (meaning that the virtual serial / COM port will disappear). After the processor resets, the bootloader starts, remaining active for about 8 seconds. The bootloader can also be initiated by double-pressing the reset button on the Robot. Note that when the board first powers up, it will jump straight to the user sketch, if present, rather than initiating the bootloader. Because of the way the Robot handles reset it's best to let the Arduino software try to initiate the reset before uploading, especially if you are in the habit of pressing the reset button before uploading on other boards. If the software can't reset the board you can always start the bootloader by double-pressing the reset button on the board.?A single press on the reset will restart the user sketch, a double press will initiate the bootloader. USB Overcurrent ProtectionBoth of the Robot boards have a resettable polyfuse that protects your computer's USB ports from shorts and overcurrent. Although most computers provide their own internal protection, the fuse provides an extra layer of protection. If more than 500 mA is applied to the USB port, the fuse will automatically break the connection until the short or overload is removed. Physical CharacteristicsThe Robot is 19cm in diameter. Including wheels, GTFT screen and other connectors it can be up to 10cm tall. To Learn MoreSee also:?getting started with the Arduino Robot?and?the Robot's library pages. Our warranty/ return / exchange policy is very simple. If the item we sent you is defective when you received the shipment from us (NOT AFTER USE), you can report to us by email for return / exchange / refund arrangement. Request(s) for return or exchange and report(s) of missing or damaged part(s) must be received within 30 days of your receipt of merchandise(s). We reserves the rights to entertain requests received thereafter. Items returned must be in as-new conditions with the packing slips, manuals, accessories and all other items intact in original packaging. Returned merchandise must be received from our customer before we will process and ship out any replacement. All merchandise should be returned to us by shipping carriers with safe method which provides proof of shipment (just in case your item does not reach us. so you can check with your local shipping carrier.) We will not responsible for the lost of returned merchandise in shipping. Shipping and handling charges for all orders are non-refundable, as we have paid the Post Office to send the shipment and the Post Office will NOT refund the postage cost back to us after they processed the shipment. Customer will be responsible for the return shipping cost to send return back to us. For returned merchandise that is found to be genuinely defective, we ship out replacement for free (we pay for the replacement shipping cost) and will not charge additional shipping and handling fees. We reserves the right to return merchandise to its customer and not refund money, if we in our opinion deem that the merchandise has been used, crashed, abused, misused or modified in any form, or has been damaged by water, dust, or other contaminants. *** All items are tested by manufactures to make sure they are working properly before we ship them to our customers. *** If you used / flew the product, or crashed product, no matter what the reason. We are sorry but we can not be responsible for your crash or use. Hobbypartz.com will not be responsible for incidental or consequential damages including bodily injuries and property damages arising from the use of any product(s) that it sells. Hobbypartz.com reserves the right to refuse service to anyone. Remote controlled products and accessories can be very dangerous. Please read the operating manual before use. 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