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esp32c3_tmc2209_dcdc

Overview

I picked up rubbish and made a workbench electron microscope.

Composed of VGA industrial camera and 0745 lens

In order to make the up and down adjustment and magnification adjustment more convenient and precise, a board was designed using esp32-c3 to drive two stepper motors through the tmc2209 module.

Responsible for adjusting up and down (focusing) and rotating the lens (magnification adjustment) respectively

At the same time, an OLED display screen is added to display the status, and a PS2 joystick is added to control the up and down movement and rotation adjustment of the lens.

The last extra GPIO is used to switch the lighting ring in front of the lens.

The open source link of the program is here. It has been tested and has been used for a long time.

The bill of materials is in the attachment

The video will be added in the future, because some friends are in urgent need of it

planevina/esp32-stepper-controller: Homemade dual-channel stepper motor control program based on esp32-c3 (used to control the lifting and focusing of self-assembled electron microscopes) (github.com)

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-05-12 09:14:44

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