Andrew S. Harmon http://andrewsharmon.com Design and Engineering Sun, 07 Aug 2011 22:18:11 +0000 http://wordpress.org/?v=2.9.1 en hourly 1 Wire Frame Table http://andrewsharmon.com/2011/08/wire-frame-table/ http://andrewsharmon.com/2011/08/wire-frame-table/#comments Sun, 07 Aug 2011 22:18:11 +0000 admin http://andrewsharmon.com/?p=266 Wire frame table
Wire frame table Wire frame table Part of the top surface constructed Wireframe table, uprights added Top surface completed, Wire frame table Start of a Wire frame table

I want to make a dining room table that is reminiscent of a wire frame model (think a computer graphics mesh). I decided to start small and make this side table. From this small version I learned that I should use copper clad welding rod instead of stainless (because even though they make stainless solder and flux, it is not as strong or easy to use as normal solder). Also the table used way more welding rod than I thought. So for a full size dining room table I will probably need 20-40 lbs of welding rod. I also plan to put a frosted glass top on it.

]]> http://andrewsharmon.com/2011/08/wire-frame-table/feed/ 0 Simple high speed motor http://andrewsharmon.com/2011/06/simple-high-speed-motor/ http://andrewsharmon.com/2011/06/simple-high-speed-motor/#comments Sun, 05 Jun 2011 02:58:02 +0000 admin http://andrewsharmon.com/?p=232

This is a quick motor I made using a single phase brushless motor controller IC (AH5798-yg) a coil of wire (100 turns of 38 awg)  and a magnetic sphere (Neodymium Iron Boron, N42). Based on the sound (via my FFT app on my iphone)  it is spinning at either 74400 or 37200 rpm.

]]> http://andrewsharmon.com/2011/06/simple-high-speed-motor/feed/ 0 Solid state retrofit http://andrewsharmon.com/2011/06/solid-state-retrofit/ http://andrewsharmon.com/2011/06/solid-state-retrofit/#comments Sun, 05 Jun 2011 02:20:11 +0000 admin http://andrewsharmon.com/?p=227 For my senior design II project I designed a LED light fixture to replace the standard fluorescent ones in the campus apartments.  This is my final report.

LED retrofit fixture Final report

16 Cree Mx6 leds on heat spreader

]]> http://andrewsharmon.com/2011/06/solid-state-retrofit/feed/ 0 LEDs! and some other projects http://andrewsharmon.com/2010/12/leds-and-some-other-projects/ http://andrewsharmon.com/2010/12/leds-and-some-other-projects/#comments Tue, 21 Dec 2010 02:40:05 +0000 admin http://andrewsharmon.com/?p=206 I would recommend checking out my flickr page for more of my projects (I’m a little busy right now). But I have been making some custom PCBs, playing with some interactive video, and dabbling in ultracapacitors.

1.5A buck board and cree xp-g led

400+ lumen Cree xp-g flashlight 2.1A 25V boost converter 25 V 260 Farad cap bank Reactivision +quartz Touch screen with a projector Feedback with thresholding and gain

]]> http://andrewsharmon.com/2010/12/leds-and-some-other-projects/feed/ 3 Bubbles Display http://andrewsharmon.com/2010/10/bubbles-display/ http://andrewsharmon.com/2010/10/bubbles-display/#comments Sat, 09 Oct 2010 16:28:13 +0000 admin http://andrewsharmon.com/?p=199 This bubble display uses glycerine and air to produce pattens and text.  This version is 8 pixels wide.  The concept can be scaled up in a modular fashion to enable large installations (ie an entire wall in a restaurant or bar, or a free standing divider in a lobby or office).  Control is implemented using an arduino micro controller board. Future additions will include a streaming interface (to upload text and commands on the fly), and a more refined modular design.  This prototype is on display at Momentum Tulsa 2010.

Bubbles

]]> http://andrewsharmon.com/2010/10/bubbles-display/feed/ 2