Blogging about the development of my laser harp, tesla coils, theremins and other electronic oddities.

Owner: Hobley

Listed in: Science

Language: English

Tags: Laser Harp, Theremin, Pixart, Dalek, Arduino

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Latest Blog Posts for This week, I have been mostly working on

  • …still messing with forces I don’t understand – the formula.
    on Mar 2, 2011 in Electronics
    I’ve done more trials since I posted about the etching solution yesterday. Some of them have failed, so I thought it best to present the recipe as a movie – so you get to see how the chemical process should work. [OMG, he's not going to m...
  • …messing with forces I don’t understand.
    on Mar 1, 2011 in Electronics
    If you’re anything like me, you like to etch PCBs at home. Quite often you’ll get the urge, but find that you’ve just run out of Ferret Chloride*, or Bureaucratic Acid* So what can you do? I know little about chemistry, but that doe...
  • MIDI Camera – gesture control for Ableton (and just about anything else!)
    on Feb 26, 2011 in Electronics MIDI and Music
    Way back in 2008 I did quite a bit of work with the Pixart camera taken from a Wiimote. There are no official specifications or data sheet available, so everything has been gleaned by reverse-engineering the chip itself. Over the last couple of years...
  • Space Invaders!
    on Feb 25, 2011 in Everything Else
    …coasters! I just got these fantabulous Space Invader coasters from my brother-in-law – they’re actually made right here in Indianapolis by Cameron Oehler – check out the guy’s site: They seem to be ass...
  • …quite possibly the best birthday present. Ever.
    on Feb 22, 2011 in Electronics
    I realise that I’m very late to the party on this one – but my wife just bought me Lego Mindstorms for my 41st birthday. I’m seriously impressed with this kit – it uses a graphical programming language (something old-schooler&...
  • Laser bounce mirrors on the cheap…
    on Feb 20, 2011 in Electronics Lasers
    I was looking around for a way to quickly put together some adjustable bounce mirrors and came up with the following. I already had some 1″ square front surface mirrors, so I went out and bought some brass hinges and magnets from a local superm...
  • …introducing the Arduino FlipShield
    on Feb 16, 2011 in Electronics
    Even if I do say it myself, I’m getting pretty good at making printed circuit boards at home. Even down to adding a silk screen layer on top. Nearly everything I do is single sided though – and this can present a problem when it comes to...
  • …a sinewave generator using PWM
    on Feb 9, 2011 in Everything Else
    I was reading up on filter design when I came across an article on the Lab3 site…. The results were impressive, using just Pulse Width Modulation generate an accurate 8-bit sine wave. The key is a good low pass filter – most of the time I...
  • Very short video of the DRSSTC Tesla coil
    on Feb 8, 2011 in Everything Else
    I’ve had this coil running for a while, but never shot any footage of it. The movie ends a bit quickly, because I got too close with the camera, and it went a bit mental…...
  • Controlling an LCD with just 3 pins…
    on Feb 7, 2011 in Electronics
    How do you know when you’ve had a really good idea? It’s when you go online and realize that a bunch of other people have all done the same thing. I use often use LCD panels in my projects – they’re cool to look at, and can re...
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