A stepper motor's coils need more current than a GPIO pin can supply directly. The ULN2003 board sits between the ESP32-S3 and the motor, amplifying 4 weak digital signals (IN1 – IN4) into the ...
If you grew up playing with LOGO on an old 8-bit computer, you’re probably familiar with the concept of a drawbot. It’s a simple robot that drags a pen around to draw on paper. [Tim] decided to build ...
It’s a common ritual: whipping out those calipers or similar measuring devices to measure part of a physical object that we’re trying to transfer into a digital model in an application like FreeCAD.
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