van de graaff

Posts Tagged ‘van de graaff’

$2 Van de Graaff Generator

Van de Graaff generator from found parts and a $2 M&M'S candy tin

Van de Graaff generator from found parts and a $2 M&M’S candy tin

When I was a little boy I was fascinated with static electricity and played a lot with sparks and attracting little pieces of paper to a plastic comb brushed through my hair. The comb was later replaced by an ebonite rod, also brushed through my hair, which my mother, a school physics teacher, brought home. It was great fun but brushing one’s hair gets old quick and, perhaps more importantly, some 30 years later it’s become crystal clear to me that human hair won’t always be so readily available for my static electricity experiments. Unless someone else volunteers theirs. And so it has become obvious: I needed to break my dependence on human hair as the source of high voltage energy! :)

Robert Jemison Van de Graaff to the rescue! His ingenious generator, developed in 1929, appeared to be a perfect replacement of the hair/comb generation technology, and it looks super cool doing it, too, with its tall column and a shiny metal sphere at the top! So, finally, some 30 years after I first read about Van de Graaff, I decided to take action and here is what came out … Read the rest of this entry »

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  • CHAARI: need an eagle file for the control of a stepper motor with easy drive or a microstepping driver
  • admin: Awesome! Thank you very much for sharing, Dani!
  • Dani: Here is my version, not perfect but I learned a lot. http://youtu.be/yrOzLo7bk_E
  • Dani: Thanks for your reply! :)
  • Andreas Carmblad: Thanks for answer :) I use easydriver yes. The problem is solved though. I thought I was supposed...
  • admin: Hi Andreas, You did not specify which stepper motor controller you are using and it is an important bit of...
  • Andreas Carmblad: I would really need some help with this. I can’t get it to work. The axel of the motor is...
  • jordan: whoops just realised the error in my previous post, 250mW is the output but has nothing to do with the input...
  • jordan: hi, i managed to get my hands on two laser diodes and was a little too eager with the first one (it blew out)...
  • admin: I think you are correct, LinuxCNC should be able to control it using a more widely available CNC servo...
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