EZQUADSERVO Servo Motor Control+Driver

Servo Motor Controllers & Drives

The EZQUAD Servo was designed to allow the rapid implementation of multi axis servo motor solutions in products requiring automation.

Measuring only 2.25" x 2.25" X 1.0" (57mm x 57mm X 25mm), the fully intelligent servo motor Controller + Drivers runs 4 fully independent Brushed or BLDC servo motors (see wiring diagram). Operating from a 7V to 40V supply the controller regulates to any motor voltage via software command (Eg 3V motor can be run with 24V supply). Commands can be issued from any serial terminal program (such as HyperTerminal) or from the EZServo Windows application.

The EZQuad servo will drive 4 motors at 2.5 Amps each with a setting of move current m=50 %. However with careful selection of motors and/or improved cooling and/or low move time duty cycle it is possible to run motors at 5 Amps at m=100%. See Command Set for details.

The Commands are intuitive and simple. For example, the command A10000 will move the servo motor to Absolute position 10000. This communications protocol is compatible with devices that use the Cavro DT or OEM protocol.

The EZQuad servo is also capable of stand-alone operation with no connection to a PC. It can be set to execute a preset string of commands upon power up (i.e., only power is required in this mode). The Commands include nested loops and execution halt pending a switch closure, which is useful in stand-alone applications.

Using our starter kits, a first time user is able to make a BLDC (or brush DC) servo motor move intelligently in less than half an hour (see wiring diagram).

The EZQuad Servo Motor Controller will typically work with any motor that is 3" or smaller (size 23 or smaller). Our Starter Kits enable a first time user to make servo motors move intelligently in less than half an hour (see wiring diagram).


Contact the factory for volume pricing

Type Voltage
Motor # of
Feedback Built-in Interface
EZQUADSERVO Controller + Driver 7 - 40 5 Servo 4 Encoder RS485
CAN bus

* RS232 interface available when used with a RS485 Converter.

  • Full featured 4-axis position controller with power drivers
  • Fully programmable ramps and speeds
  • Four independent 5 Amp BLDC or brush DC drives
  • Quadrature encoder based feedback
  • Operates from 7V to 40V
  • RS232, RS485, USB or CAN BUS based communications
  • Direct USB, RS485, and CAN BUS connection built-in
  • On-board EEPROM for user program storage
  • Stand alone operation with no connection to a PC
  • Execution Halt/Branch pending switch closure
  • Pre-wired for OptoSwitch inputs (see wiring diagram)
  • Industry standard communications protocol
  • Homes to an Opto or Encoder Index with a single command
  • 16 analog inputs,and 16 power On/Off drivers included
  • Switch selectable device address
  • Independent parameters for all axes (acceleration, velocity, currents, etc)
  • Branch halt on ADC value
  • Daisy-chainable with other AllMotion products on a single 4 wire bus

Stepper Motor Controller Addressing


H Command

Home Function

Encoder Feedback