Vex Robotics EDR arm VEXnet 802.11g Cortex Microcontroller revA4 With Cable

The VEX ARM® Cortex®-based Microcontroller, specifically the revA4 with part number 276-2194, is a central component in VEX Robotics EDR (Education Robotics Design) systems. It serves as the \"brain\" of a robot, coordinating information and power flow.

Here\'s a breakdown of its key features and specifications:

Core Functionality:

• Robot Brain: It manages all electronic system components, with everything else interfacing to it.

• Wireless Communication: It has built-in bi-directional communication for wireless driving, debugging, and downloading firmware using the VEXnet wireless link (specifically and Memory:

  • Processor: STMicroelectronics ARM® Cortex® M3 user processor.

    • Speed: 90 MIPS (Million Instructions Per Second)

    • RAM: 64KB

    • Flash: 384KB program and Inputs/Outputs:

      • Motor Ports:

        • 8 standard 3-wire Motor ports.

        • 2 2-wire Motor Ports:

          • 1 I2C \"smart sensor\" port.

          • 8 Hi-res (12-bit) Analog Inputs.

            • Input range: 0.0V to 5.0V.

            • Tolerant of -0.5V to +5.5V.

            • Can only be configured as analog I/O Ports:

              • 12 fast digital I/O ports, which can also be used as interrupts.

                • Needs 0.0 to 0.6 volts for a low and 2.5 to 5.0 volts for a high.

                • Tolerant of -0.5V to +5.5V.

                • Can be configured as either inputs or Ports:

                  • 2 UART Serial Ports (commonly used for the VEX LCD Module).

                    • 0 to 3.3V logic I/O, 5V with easyC v4 or ROBOTC for VEX Robotics v4.x.

                    Important Considerations:

                    • Firmware (Master Code): VEXnet devices like this microcontroller run on special software called Firmware. This firmware is updated periodically to provide new features or fix bugs, and it\'s essential to keep it updated for full Management: It coordinates power, with specific details on current limits for motor and 5V power output pins.

                    In essence, the VEX Cortex Microcontroller is the central control unit that allows students and robotics enthusiasts to build, program, and operate their VEX EDR robots, providing the necessary connections and processing power for various sensors, motors, and communication.