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    Axon II Microcontroller

    The Axon II is a microcontroller
    designed by and for the robotics hobbyist.

    Getting Started | Purchase | Examples | FAQ | Help Forum
    Demo Videos | Bootloader | WebbotLib | Demo Code | Datasheet


      The Axon II was developed for robots that go beyond the basics. With the Axon II, you will no longer need to worry about not having enough I/O as it has 58 for you to use. You will never be wanting of UART, as there are 3 directly available, with a 4th used for a USB connection directly to your PC. A total of 16 ADC ports for all of your sensors. A bootloader is pre-installed so no hardware programmer is needed. Lastly, extensive source code and tutorials have been developed to make it easy enough for a beginner yet still powerful enough for an expert.

      More specifically, the Axon II is the best microcontroller on the market for multi-limbed robots such as bipeds, spiders, and robot arms. Unlike many other robot microcontrollers on the market, no additional messy breadboard wiring or expensive shields are required to make your robot. It's 100% plug-n-play - no external power buses required to plug in servos or sensors, literally taking minutes to set up.

      The Axon II uses the powerful ATmega640 as its processor, which has typically 4x more memory than other controllers on the market (see specifications below).

      Lastly, at 34 grams (a typical 9V battery weighs 40g), the Axon II is the smallest and lightest of any other comparable full-featured microcontroller on the market.

    Axon II Microcontroller
    No Soldering Required NO soldering or assembly required! Works right out of the box, with multiple working demo programs pre-installed.

    Full Personalized Support Full personalized support by the Axon II creator and SoR author himself! Stuck? Post a question in the robot forum and read previous Axon II questions - no question is left unresolved. I will be continually adding easy to use software to support all your favorite robot hardware. This is all included in the price. Remember to read the FAQ first before asking!!!

    SoR Scope Free access to plug-n-play SoR Scope, software that converts your Axon II into a 16 channel oscilloscope. Who wants to spend hundreds or thousands on a clunky oscilloscope anyway? No programming necessary.


      For detailed information, please refer to the Axon II Datasheet.

    • 58 I/O Total
    • 16 ADC
    • 25+ Servos
    • I2C, SPI
    • 3 UART + USB
    • Up to 8 external interrupts
    • 15 PWM Channels
    • 64KB Flash, 4KB EEPROM, 8KB SRAM
    • 16 MIPS throughput at 16 MHz
    • 6 Timers (four 16-bit, two 8-bit)
    • pre-programmed with a bootloader - no programmer required
    • numerical LED display
    • built in 3.3V, 5V, and unregulated power buses
    • external memory support (port A)
    • all software is free
    • 100% open source, large support community
    • Windows, Mac, and Linux compatible
    • and more!


      By purchasing product(s) from Society of Robots, you are thereby agreeing to not hold said website or owners and partners of said website responsible or liable for any and all harm, damage, or distress caused by said product(s).

      All disagreements must be settled outside of court.


    Axon II with USB cable and On/Off Switch


      Feature comparisons between other popular robotics microcontrollers.
      Axon Arduino $50 Robot
      speed 16MHz 20MHz 8MHz/1MHz
      I/O Available 55 17 17
      Timers 6 3 3
      analog 16 6 6
      flash 64kb 16kb 16/8kb
      RAM 8kb 1kb 1kb
      UART 4 1 1
      USB yes yes no
      Power Bus yes no yes
      Programmer Required no no yes
      Minimum Input Voltage 5.4V 7.2V 6V
      Polarity Protection yes yes no
      Noise Suppression some some some
      Price (subject to change) $86 $35* $15**

      * Does not include shipping or shield.
      ** Does not include servos, battery, and programmer for the $50 Robot.

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