Drum and base

Stepper motor and drum

To do some testing on a Stepper Motor evaluation kit from Trinamic, I’ve been building a test rig. The idea is that the motor will drive a slider and I’ll check the position of that to determine the repeatability of

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Clock Electronics Current

Clock Electronics Current

The initial design for the Topsy Turvy Clock had all of the circuits being driven through the regulator on the microcontroller. This is a MIC5219 regulator and is rated at 500mA but also has a very low dropout voltage. The

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More small steppers

More small steppers

The output of my stepper motor feeds into a gearbox which I’ve been told has a ratio of approximatly 64:1. During the research of this project I came across a discussion about why the gear ratios were not exact nice

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Small stepper motors

Small stepper motors

For my clock project I needed to control the position of the hands. My options were continuously rotating servos or stepper motors. I found some small 28BYJ-48 stepper motors and gearbox with ULN2003 driver boards on the internet so I

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X-Y Plotter revisited

X-Y Plotter revisited

Back in 1986 for my GCSE in “Craft Design and Technology” I had the idea of building an X-Y Plotter for my project. I recently found a couple of photos of the project so I though I’d revisit the project

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Stepperhead

Stepperhead

The stepperhead is a sophisticated multi-mode machine made by Alan Jackson. In other words, it’s both a lathe and a milling machine but it can also perform some functions not available on either. The video below shows one of these

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