I have an assortment of old cutting edge home brew projects that were pretty neat in their time but essentially junk now. The significant thing being that they were built and that they did work! A variable speed drill motor control was pretty exciting when SCR's were young. The PC board was masked with masking tape, what else? The Frequency counter was built from plans in QST utilizing mail order pc boards and Ne2 neons as indicators in each decade. Over 100 noise generating neons in the same box as title logic led to some "iffy" but usable conditions. But it did work! Even if a Home Brew project only "kinda works" I am inclined to withhold criticism. As far as the "next Iteration" of a project is concerned, one should always expect it to be held to a higher standard. John Ferrell W8CCW "Life is easier if you learn to plow around the stumps" http://DixieNC.US ----- Original Message ----- From: "Brian B. Riley" To: "Microcontroller discussion list - Public." Sent: Friday, February 08, 2008 3:19 PM Subject: Re: [PIC] Build a short range personal radar with an 18F452 > Its always easy to see the project and see who to do it better when > you have the benefit of the man's existing work ... I could sure use > one of them with the 1-5.5 meter sensor for backing up to my pickup to > the woodshed with the back piled 4-5 feet high with wood!!!!! > > I am going to try to duplicate that with an ATmeag168 under > Arduino ... shouldn't be too hard ... > > > On Feb 8, 2008, at 2:58 PM, Jinx wrote: > >>>> http://www.pyroelectro.com/projects/ir_radar/index.html >>> >>> Infrared distance sensor, no "radar" at all. :( >> >> I think "radar" suits it. The sensor is swept by a servo and the >> result is position and distance. infra-red radar. Possibly iRadar >> (don't tell Jobs) >> >> Could do with a re-design though. 40 LEDs, PIR sensor, PIC, >> logic, 7805 and motor runing on a ..... 9V battery. I want to be >> that man's battery supplier ;-) > > > > -- > cheers ... 73 de brian riley, n1bq , underhill center, vermont > Tech Blog > > Home of the > K107 Serial LCD Controller Kit FT817 Power Conditioner Kit > Tab Robot Laser Tag Kit MSP430 Chips and Connectors > Propeller Robot Controller SX48 "Tech Board" Kit > PICAXE chips and accessories Freeduino systems > > > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist