Re: Dreaming of a Static Motor Arrangement and Less Vitamins May 08, 2013 08:54PM |
Registered: 11 years ago Posts: 381 |
Re: Dreaming of a Static Motor Arrangement and Less Vitamins May 14, 2013 12:35PM |
Admin Registered: 13 years ago Posts: 730 |
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from the video
Now it's always interesting to see if it works, because relays aren't designed to switch on and off at five thousand times a second. It can jam... occasionally. I wanted to make this video before it burned out entirely.
Re: Dreaming of a Static Motor Arrangement and Less Vitamins May 14, 2013 05:59PM |
Registered: 12 years ago Posts: 17 |
Re: Dreaming of a Static Motor Arrangement and Less Vitamins May 21, 2013 01:02AM |
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Re: Dreaming of a Static Motor Arrangement and Less Vitamins June 11, 2013 06:31PM |
Admin Registered: 13 years ago Posts: 730 |
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Chris Fenton
It (the 1895 book "The Mechanism of Weaving") also made me think Charles Babbage must have been a huge jerk to not be able to get his machine working, since power-loom engineers were definitely building things nearly as complicated just for making rugs quickly...
Re: Dreaming of a Static Motor Arrangement and Less Vitamins June 17, 2013 01:24PM |
Registered: 16 years ago Posts: 174 |
Re: Dreaming of a Static Motor Arrangement and Less Vitamins June 26, 2013 10:41PM |
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Re: Dreaming of a Static Motor Arrangement and Less Vitamins June 27, 2013 10:10AM |
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Re: Dreaming of a Static Motor Arrangement and Less Vitamins July 07, 2013 09:23AM |
Re: Dreaming of a Static Motor Arrangement and Less Vitamins July 07, 2013 10:37AM |
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Re: Dreaming of a Static Motor Arrangement and Less Vitamins July 26, 2013 09:42AM |
Registered: 11 years ago Posts: 248 |
Re: Dreaming of a Static Motor Arrangement and Less Vitamins August 01, 2013 11:43AM |
Re: Dreaming of a Static Motor Arrangement and Less Vitamins January 29, 2016 07:30PM |
Registered: 12 years ago Posts: 17 |
Re: Dreaming of a Static Motor Arrangement and Less Vitamins January 30, 2016 12:55PM |
Admin Registered: 13 years ago Posts: 730 |
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WillStevens
Here's a video of a stepper motor controller made from relays:
[www.youtube.com]
I'll post the circuit diagram later.
Re: Dreaming of a Static Motor Arrangement and Less Vitamins January 30, 2016 02:08PM |
Registered: 11 years ago Posts: 5,780 |
Re: Dreaming of a Static Motor Arrangement and Less Vitamins January 30, 2016 04:11PM |
Admin Registered: 13 years ago Posts: 730 |
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the_digital_dentist
in what sense is using a handful of $5 relays ... any improvement over using a $5 single-chip?
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WillStevens
There is the practical goal of making a cheap, autonomous, and versatile personal manufacturing system. If that is the objective then the number of vitamin parts and the complexity of the machine and its control system are irrelevant unless they affect the price and performance of the machine, and the range of people who have access to it.
The self-replicating or closed-cycle manufacturing system goal is a separate one (but with some overlaps in the realisation), which may or may not turn out to be feasible or useful, but I find it interesting from a pure science perspective regardless of whether it is useful or not. For this goal, the number of vitamin parts, and the complexity of construction of both the mechanical part of the machine and the control system are fundamental considerations. There are reprappers who are interested in one or the other or both of these goals (I'm interested in both).
Re: Dreaming of a Static Motor Arrangement and Less Vitamins January 30, 2016 04:45PM |
Registered: 12 years ago Posts: 17 |
Re: Dreaming of a Static Motor Arrangement and Less Vitamins February 06, 2016 01:56PM |
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Re: Dreaming of a Static Motor Arrangement and Less Vitamins February 08, 2016 02:01AM |
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Re: Dreaming of a Static Motor Arrangement and Less Vitamins February 08, 2016 02:26AM |
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Re: Dreaming of a Static Motor Arrangement and Less Vitamins February 08, 2016 02:36PM |
Admin Registered: 13 years ago Posts: 730 |
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WillStevens
It uses 14 relays for the stepper motor driver, 15 for the 2-bit divider stage and 2 for the clock. The clock timing is determined by two capacitors made from sodium-bicarbonate solution and aluminium foil (in the glass beakers).
Re: Dreaming of a Static Motor Arrangement and Less Vitamins February 09, 2016 06:37PM |
Registered: 12 years ago Posts: 17 |
Re: Dreaming of a Static Motor Arrangement and Less Vitamins February 14, 2016 06:38PM |
Registered: 12 years ago Posts: 17 |
Re: Dreaming of a Static Motor Arrangement and Less Vitamins March 10, 2016 01:34AM |
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Re: Dreaming of a Static Motor Arrangement and Less Vitamins March 13, 2016 03:04PM |
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Re: Dreaming of a Static Motor Arrangement and Less Vitamins May 01, 2016 12:44PM |
Admin Registered: 13 years ago Posts: 730 |
Re: Dreaming of a Static Motor Arrangement and Less Vitamins May 02, 2016 06:06PM |
Registered: 12 years ago Posts: 17 |
Re: Dreaming of a Static Motor Arrangement and Less Vitamins May 03, 2016 03:58PM |
Admin Registered: 13 years ago Posts: 730 |
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WillStevens
It needs more work to increase the available torque - the diameter of the toothed wheel could be increased.
I expect that the solenoid/electromagnet actuator can also be improved. It consumes about 7W when switched on.
Re: Dreaming of a Static Motor Arrangement and Less Vitamins May 07, 2016 02:57PM |
Registered: 9 years ago Posts: 96 |
Re: Dreaming of a Static Motor Arrangement and Less Vitamins May 07, 2016 04:44PM |
Registered: 12 years ago Posts: 1,236 |
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Douglas Adams
Slartibartfast: “Perhaps I'm old and tired, but I think that the chances of finding out what's actually going on are so absurdly remote that the only thing to do is to say, "Hang the sense of it," and keep yourself busy. I'd much rather be happy than right any day.”
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Arthur Dent: "And are you [happy]?
Slartibartfast:"Ah, no. Well, that's where it all falls down, of course.