USB2AX v3.2b

SKU 105990050
The USB2AX is a small interface to control Dynamixel servos like the AX-12 from a computer
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The USB2AX is a small interface to control Dynamixel servos like the AX-12 from a computer. It plugs into a USB port and has a 3-pin Dynamixel connector to be connected to the servos.

A typical use scenario is in a small mobile robot with a laptop or an embedded computer (like a Raspberry Pi) as a brain and servos to move legs, arms or claws.


  • • ŸComunication with AX and MX Dynamixel servos (with 3 wires) @ 1Mbps
  • • ŸVery small (16x36mm)
  • • ŸOptimized latency
  • • ŸProtection against ESD and short circuits
  • • ŸAdvanced functionalities: sync_read, bulk_read...
  • • ŸWindows / Linux / MacOS
  • • ŸFirmware updates
  • • ŸOpen Source Software & Hardware, programmable and hackable!

What servos can it talk to?

  • • ŸBasically, it  can talk with any device which uses a half-duplex TTL interface (3-pins connector) and the • ŸDynamixel protocol. More specifically:
  • • ŸAll of the AX servos (AX-12/AX-12+/AX-12A, AX-12W, AX-18F/AX-18A).
  • • ŸThe "T" versions of the MX servos (MX-28T, MX-64T, MX-106T).
  • • ŸXL-320 with an adapter cable (different connectors and power but compatible communication).

What can't it do?

  • • ŸThe USB2AX can not communicate with the Dynamixel servos using the RS485 interface (the one with 4 pins).
  • • ŸNeither can it control any sort of hobby/RC servos or other brand of robot servos.
  • • ŸCompared to the USB2Dynamixel, it also lacks the RS232 port (with its big DB9 connector) used to • Ÿprogram some controllers from Robotis like the CM-510.
  • • ŸIt can not supply power to the servos.
  • • ŸIt is not a generic USB to Serial (even though it can be modified to be one) and has very different capabilities than the LN-101.


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Questions and Answers
Does the "Ink"Color Bag have silver tone hardware? (Chain)? It is hard to tell in photo
on Aug 5, 2014
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I bought the black one and the chain is gold color. Not sure of the ink bag.
on Aug 5, 2014
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You need a WiFi Internet connection, and a smartphone or tablet for the Echo App. That's it. It is easy to set up, but it may take you a while to figure out all of the little things that the Echo App can do.
on Aug 5, 2014
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BEWARE this is NOT STEREO and it is NOT MONO. This is only one channel. You will not hear part's of songs (recorded in stereo) that are only played through the left channel. Kinda ridiculous. Still it is a decent sounding speaker.
on Aug 5, 2014
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★★★★★ Great bag
Purchased this for my 23 year old daughter in the butterscotch color. Great versatile color. She loves the size -- perfect for day or going out at night. Chain can be double to shorten for nighttime and left long to wear as a crossbody during the day.
September 2, 2013 by
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