Spindle DAC
Universal PWM Controller
4-axis Digital to Analog Converter
Universal Stepper Controller
Brushless PWM Servo Amplifier
(b) PWM Servo Amplifier
Gecko Interface
Copley Interface
Digital Input/Output Board

Buy CNC Retrofit Spindle Control Circuit Board

Browse our comprehensive selection of CNC retrofit spindle control circuit boards designed for precision motion control. From digital-to-analog converters and PWM servo amplifiers to universal stepper controllers, our boards integrate seamlessly with LinuxCNC systems. Engineered for reliable performance in industrial automation, CNC machine retrofits, and servo control applications with expert technical support.

Our Range of Products
Spindle DAC

Spindle DAC

  • Jumper-selectable output voltage
  • Includes connection cable
  • 0.5 lbs lightweight design
Universal PWM Controller

Universal PWM Controller

  • 10 MHz encoder counting per axis
  • 25 ns PWM granularity precision
  • 16 optoisolated digital inputs
4-axis Digital to Analog Converter

4-axis Digital to Analog Converter

  • 16-bit resolution accuracy
  • Integrated watchdog and E-stop
  • Compatible with velocity servos
Universal Stepper Controller

Universal Stepper Controller

  • 250K steps/sec per axis rate
  • Daisy-chain for multiple axes
  • 15 opto-isolated inputs
Brushless PWM Servo Amplifier

Brushless PWM Servo Amplifier

  • 120V 20A brushless motor control
  • Built-in E-stop functionality
  • Resistor peak current control
(b) PWM Servo Amplifier

(b) PWM Servo Amplifier

  • 120V 20A output capacity
  • Resistor-selectable peak current
  • Fixed fault detection circuit

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Frequently Asked Questions

What is the difference between a DAC and PWM controller for CNC spindle control?

DACs output analog voltage signals for servo amplifiers, while PWM controllers generate digital pulse-width modulation signals. DACs offer 16-bit precision for smooth analog servo control; PWM controllers provide high-frequency digital control for both stepper and servo motors.

Are these spindle control boards compatible with LinuxCNC software?

Can I use multiple controller boards together for additional axes?

What voltage and current ratings do the servo amplifiers support?

Do these boards include safety features like E-stop functionality?

What is the maximum step rate for stepper motor control?

How do I select the right spindle control board for my CNC retrofit project?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

CNC Machine Tool Manufacturing

CNC Machine Tool Manufacturing

Precision control boards enable accurate spindle speed control and multi-axis coordination for mills, lathes, and routers.

Industrial Automation

Industrial Automation

Interface boards and servo amplifiers provide reliable motion control for automated production lines and robotic systems.

Machine Retrofit & Modernization

Machine Retrofit & Modernization

Retrofit control boards upgrade legacy CNC equipment with modern LinuxCNC-compatible digital control systems.

Precision Motion Control Systems

Precision Motion Control Systems

High-resolution DACs and PWM controllers deliver precise positioning for advanced motion control applications.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

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Universal Stepper Controller | CNC Retrofit Control Board for Sale Online

CNC Retrofit Control Board for Sale Online

Browse our complete line of CNC retrofit control boards designed for precision motion control and machine automation. These boards support stepper and servo motors, offering solutions for multi-axis control, PWM generation, encoder feedback, and signal conversion. Compatible with LinuxCNC and other control systems, our retrofit boards enable seamless integration with existing CNC machinery, delivering reliable performance for industrial automation applications.
Copley Interface | Buy CNC Servo Interface Board for Retrofit Systems

Buy CNC Servo Interface Board for Retrofit Systems

Browse our complete selection of CNC servo interface boards designed for retrofit systems. These specialized boards enable seamless integration between motion controllers, servo amplifiers, and encoders. Engineered for industrial automation, our interface solutions support LinuxCNC, PPMC systems, and various analog/digital servo drives with reliable signal conversion and fault protection.

Why CNC Machine Builders Choose Pico Systems

LinuxCNC Integration Expertise

Specialized motion control interfaces designed specifically for LinuxCNC systems with proven compatibility across servo and stepper applications for seamless retrofit integration.

Comprehensive Product Range

Complete selection of DACs, PWM controllers, interface boards, and servo amplifiers providing end-to-end solutions for industrial automation and CNC machine control systems.

Technical Support & Documentation

Expert technical guidance with detailed documentation for every product, ensuring successful implementation and optimal performance in your motion control applications.

Get Expert Guidance on CNC Retrofit Control Boards

Connect with our motion control specialists to discuss your retrofit requirements. Receive personalized product recommendations and technical support within 24 hours.

Contact Us Today

For immediate assistance, feel free to give us a direct call at +1 314-965-5523 You can also send us a quick email at elson@pico-systems.com