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Dynamixel AX-12A Actuator

Product Code: AX-12A
Excl. VAT: £36.15 Incl. VAT: £43.38
You will earn 36 Robo Points for buying this product

The Dynamixel AX-12 is an inexpensive powerful servo that designed for the rigors of robotic applications.The AX-12 can report real-time position, voltage, speed, load, and temperature using an openly published instruction/status packet protocol.

The servos shuts down in the event of overheating, out of range voltage, or several other user configurable alerts.

  • 1,000,000 bps 1/2 duplex multi-drop serial bus.

  • Programable serial communication from 2400 to 1Mpbs

  • Position, speed, load, voltage and temperature feedback

  • 300 degree movement in 1024 increments

  • Full control over speed and torque in 1024 increments
  • Built in LED status indicator
  • User configured automatic shutdown based on voltage, load or temperature
  • Single cable network connection
  • Programmable servo position range
  • Complete with hardware, brackets, and 3 wire AX-12+ network cable


AX-12 Packets is an openly published instruction/status (send and receive) packet protocol. Instruction packets are sent from a controller to the Dynamixel AX-12 network. Response packets are sent from the Dynamixel network back to the controller. Since every Dynamixel AX-12 has a unique ID, only the AX-12 addressed in the instruction packet will execute the instruction. The Dynamixel communication protocol can be found in the Dynamixel AX-12A manual starting on page 9. Instruction Packet Examples

An AX-12 will shut shutdown in the event of overheating, over loading or out of range voltage levels. A standard off-the-shelf RC servo will simply fail or burn up which increases overall maintenance costs. Secondly, servo communication is unidirectional. Servos receive an analog PWM signal then move to the requested position. There is no way to determine if the servo actually completed the move.



AX-12 Max Normal Min
Operating Voltage 10.0V 9.6V 7.0V
Holding Torque 228 oz-in
222 oz-in
165 oz-in
Operating Torque 148 oz-in
10.7 kg.cm
144 oz-in
10.4 kg.cm
107 oz-in
7.8 kg.cm
No-load Speed 0.196sec/60° 0.196sec/60° 0.269sec/60°
NB. 360° Rotation Mode - 1024 selectable speeds (10bit resolution)
AX-12+ Specifications
Reduction Ratio 1/254
Operating Angle 300°
Current (max) 900mA
Operating Temp. -5°C ~ 85°C
Size 50 x 32 x 38 mm
Weight 55g
Command Signal Digital Packet
Protocol Half Duplex Async Serial (8bit, 1stop, No parity)
Link TTL (Tx & Rx multiplexed on single core)
Number of modules 254 - valid addresses 0 to 253
Comm Speed 7343bps ~ 1Mbps
Position Feedback Yes
Temperature Feedback Yes
Load Voltage Feedback Yes
Input Voltage Feedback Yes
Compliance Driving settings Yes
Material Engineering Plastic Gears and Body
Motor Maxon: Cored Motor

Whenever possible, items which are in stock are dispatched the same day, or the next working day.

Large and/or heavy items are dispatched by UPS courier service and these orders must be placed before 15:00hrs (GMT) to ensure same day dispatch.

Small items are normally sent using a Royal Mail service for UK orders, and International Airmail or UPS for overseas orders

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Dynamixel AX-12A Actuator

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