]]> I added some new pics to the ezdac Builders Gallery. JR from Arizona built the DAC utilizing a transformer-powered ezdual as a PSU, instead of an external AC wall wart. Nice job, JR! I think I will do it this way on my next build. http://www2.kumc.edu/students/ezamir/rss/2007-04-06-1.html Fri, 06 Apr 2007 15:26:00 CST JR (aka cyclebrain) on the EZDAC Builders Group made some preliminary measurements for the EZDAC. http://www2.kumc.edu/students/ezamir/rss/2007-04-09-1.html Mon, 09 Apr 2007 10:57:00 CST I recently ordered a batch of new boards from ExpressPCB made with their Standard production service. These boards are finished with tin-lead reflow, which makes for a very cool shiny surface. I have replaced the old pics of the PCB boards for both ezdual and ezdac in their respective Image sections. http://www2.kumc.edu/students/ezamir/rss/2007-04-11-ezdacIV-sim.html Wed, 11 Apr 2007 16:35:00 CST I made a SPICE simulation for the I/V (current-to-voltage) section of the ezdac using TINA-TI (which you can freely download from their website). It's called ezdacIV.TSC. Click on the title for more info... http://www2.kumc.edu/students/ezamir/rss/2007-04-12-BOM_NOW_SET_FOR_STANDARD_OUTPUT.html Thu, 12 Apr 2007 11:23:00 CST BOMs now set for standard output. Click on title for more... http://www2.kumc.edu/students/ezamir/diy.html#update_052407 Thu, 24 May 2007 11:29:00 CST With my time being more precious these days, I've decided to look into the art of toaster oven soldering]]> of smt components. I bought the Oster convection toaster oven, and will try to make this work over the summer. What does this mean? Well, I may eventually be able to sell "half-kits", or boards with most of the difficult smt parts pre-soldered (but probably not through-hole). I've had inquiries about selling assembled boards, but it takes me several hours to build a single board. At this point in my life, I simply don't really have the time to do this, unless I could charge hundreds of dollars. However, if I could figure out how to utilize the toaster oven approach, maybe the process of building would be much faster. Keep your fingers crossed for me. http://www2.kumc.edu/students/ezamir/diy.html#update_060807 Fri, 08 Jun 2007 12:07:00 CST Another builder, Hao-Wu from Taiwan, has finished the e_zdac]]>! He did it quickly, too, only a couple of days after receiving the board. Hao-Wu has made some measurements, which I will put up soon... http://www2.kumc.edu/students/ezamir/googlemap.aspx Mon, 11 Jun 2007 10:59:00 CST Inspired by the Twisted Pear Audio website, who recently posted a Google map showing the locations of every buyer, I thought this was such a good idea, that I just did the same thing. Check it out by clicking on the title link. http://www2.kumc.edu/students/ezamir/diy.html#update_061107 Mon, 11 Jun 2007 11:18:00 CST Rich from the UK has kindly created a EuroBOM]]> using Farnell and Rapid as suppliers. Thanks, Rich! http://ezdiyaudio.informe.com Tue, 12 Jun 2007 13:24:00 CST The ezdiyaudio forum has been moved to a new, spiffier web hosting service (informe.com)! To be honest, I really don't think anyone will miss the Google Group. http://www.ezdiyaudio.com Tue, 10 Jul 2007 10:14:00 CST I've changed the name of my website - ShinyMetal. The url for the website and forum will stay the same for now. Hope you like the new logo. http://www2.kumc.edu/students/ezamir/diy.html#TedS Tue, 13 Jul 2007 9:41:00 CST Ted S. from Virginia has contributed pics of his recent ezdac build. Congrats, Ted! I know you had a little rough patch, but now you can sit back and enjoy the fruits of your labor (and wallet). http://www2.kumc.edu/students/ezamir/diy.html#Ray Tue, 21 Aug 2007 2:54:00 CST Ray, from the Netherlands, writes, "Here's some pictures of my EzDAC project, as promised. It's nearly finished now, the empty space in the case is for a Flea board I'm waiting for to arrive. The thin white wire that runs from under the DAC board is the miniature coax the Flea is going to be hooked up to. I use two small toroidals to feed three regulator boards that provide +9V and +/-15V to the DAC board. The other supply (with the black tranny) is for The Flea." http://www2.kumc.edu/students/ezamir/diy.html#update_101907 Fri, 19 Oct 2007 9:44:00 CST I have ordered a new batch of boards for ezDAC v.1.5! The new PCB drawings are in the schematics section. Changes to the board include shorter, more direct traces where possible, addition of (optional) current regulating diodes (CRD) in the output section, option to use very low jitter surface mount oscillator, more decoupling caps at the IC's, jumperable power rails which will allow for easier mods to the regulator section, and last but certainly not least, the addition of soldermask/silkscreen layers! Thanks, to all those who provided such valuable input on the design of the new board.