μSMU - Open-Source Measure Unit

μSMU: The Ultra-Compact Source Measure Unit for Precision Testing

The μSMU is an ultra-compact Source Measure Unit (SMU) designed for precision measurement and control in an affordable package. Whether you're a hobbyist, engineer, or researcher, the μSMU provides lab-grade performance in a form factor that fits in the palm of your hand.

Key Features:

• Versatile Functionality: Combines a precise voltage source and current measurement in one device, ideal for prototyping, testing, and characterisation of electronic components, semiconductors, solar cells and more.
• Compact Design: At just 70 x 43 mm, the μSMU is portable and perfect for on-the-go measurements or space-constrained workbenches.
• High Precision: Enjoy accurate, reliable measurements with fine-grain control, even at low current levels below 1 μA.
• USB Connectivity: Plug-and-play USB interface for easy integration with your PC or laptop.
• Open-Source Flexibility: Fully open-source firmware and hardware, allowing for community-driven improvements and customisations.
• Online I-V Tracer software: Use of the Undalogic I-V trace software, allowing measurements to be made from the browser with no software setup

Perfect For:

• Testing semiconductors like diodes, transistors, LEDs and solar cells.
• Characterising resistive and capacitive components.
• Performing I-V sweeps for research and development projects.
• Makers, educators and researchers looking for an affordable yet powerful SMU solution.

Why Choose the μSMU?

Designed with precision, affordability, and simplicity in mind, the μSMU bridges the gap between professional-grade SMUs and DIY solutions. With its open-source ecosystem, you can tailor it to your specific needs, making it an invaluable tool for any electronics enthusiast or researcher.

What's included?

• μSMU circuit board, assembled and calibrated against a precision 7-digit source-measure unit
• Enclosure with acrylic window
• 10cm USB-A to USB-C power & data cable
• BNC-to-Alligator test leads

Source Code available here