Streamline feedback and control system design

Stabilize even the most sensitive systems with the Moku:Pro PID Controller. With fast feedback and embedded filtering, rest assured knowing that we'll take care of error correction and monitoring.


Performance and versatility to advance discovery

The Moku:Pro PID Controller integrates crucial functionality for open- and closed-loop tuning while also working alongside additional instruments for advanced applications. Combine Lock-in Amplifiers, Digital Filter Boxes, and more to create a fully contained lab in a single device.

Low latency

Utilize up to four fully configurable PID controllers with sub-microsecond latency for applications such as laser and phase stabilization.

Compact footprint

Combine four instruments at once in Multi-instrument Mode for ultimate efficiency in a space-constrained lab.

Real-time plant control

Customize nearly every step in the signal processing chain. Upgrade from DIY solutions and limiting simulation environments for enhanced research.
HubSpot Video

Visualize your signal configuration

Design your control system's frequency response in real time using the interactive Bode plot, embedded within the Moku PID Controller. Customize proportional (P), integral (I), differential (D), double-integral (I+), integral saturation (IS), and differential saturation (DS) gain profiles. Download the software for free to explore demo mode.



With Moku:Pro, you have access to multiple pieces of advanced control systems instrumentation in one device. Deployed standalone, in Multi-instrument Mode, or embedded in other instruments like the Laser Lock Box, the PID Controller covers applications such as:

• Feedback and control systems design
• Laser frequency stabilization
• Pressure, force, flow rate, and other controls

• Scan heads/sample stage positioning
• Temperature regulation

HubSpot Video

We've got you covered

System setup at Intel Labs

Using Moku:Pro for photonics IC control system research at Intel Labs

Learn how researchers at Intel Labs are using dual Lock-in Amplifiers and dual PID Controllers in Multi-instrument mode for exploratory photonics integrated circuit (PIC) testing while saving time and reducing experimental complexity.

University of Münster setup

Phase stabilization at the University of Münster

Discover how Ph.D. students at the University of Münster are using the PID Controller for highly sensitive phase stabilization setups where low-latency feedback and digital filtering have saved time, money, and lab space.

Beijing University of Posts and Telecommunications setup

Vision-based control with Moku:Go

Learn how students at Beijing University of Posts and Telecommunications combined computer vision solutions with the PID Controller for two-dimensional target tracking.


Take us for a spin

Download our Controls Workshop to test our solution in a hands-on setting. Fill out the form to get started.

Access the Controls Workshop

Compare hardware platforms

Explore the Moku:Pro, Moku:Lab, and Moku:Go PID Controller options. Compare the instrument specs to choose the right device for your application.



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About Liquid Instruments

Liquid Instruments delivers modern, software-defined test and measurement solutions that provide advanced capabilities, a great user experience, and custom programmability for maximum flexibility and performance in a range of applications.