0x23/MicroManipulatorStepper: A sub-micrometer 3D motion control plattform. ·
This project contains an open source low-cost, easy-to-build motorized XYZ Micro-Manipulator motion control platform achieving submicron precision. It's designed for applications such as optical alignment, probing electronic components, and microscopy. Check out the YouTube video for more information about the device and how it is built: An Open Source Motorized XYZ Micro-Manipulator - Affordable sub µm Motion Control Thanks to its parallel kinematic structure and miniature ball joints, it achieves good mechanical stiffness and a large range of motion. The motors are off the shelf stepper motors driven by a 30 kHz closed loop controller and a very precise PWM signal. A 'magnetic gearing' approach increases the resolution of the low-cost magnetic rotary encoders by a factor of 30 allowing for steps down to 50nm (Please mind the difference between resolution and accuracy. The absolute accuracy is significantly worse. The device can be controlled via simple G-Code commands over a USB ser