Michael, I hope he and many others will build a lot more projects using off the shelf coils and other parts. I have reached the ripe old age of 80 and am starting to slowdown and I am soon puting a site up with that type of parts. I have over 1,500,000 new Resistors, caps, Inductors and semiconductors of all types. At this time most are not smd. Will sell them later.=20 So you see why I said keep buying. Plus Tubes (valves) and things like that. Derward Myrick KD5WWI PE ----- Original Message -----=20 From: "Michael Watterson" To: "Microcontroller discussion list - Public." Sent: Tuesday, October 04, 2011 10:08 AM Subject: Re: [EE] Homemade GPS > On 04/10/2011 15:26, RussellMc wrote: >> I went to look at this one not believing it would be a low level >> creation and feeling it was a waste of time regardless. >> >> While from almost any practical point of view it IS a waste of time >> and of vast amounts of effort, it is utterly utterly superb. The >> lengths he had to go to, the effort expended, the things he had to get >> right to make it work at all and more are staggering. A relatively >> simple circuit overall. More or less understandable. Even his overall >> descriptions are understandable if you don't think too too hard as you >> skim through them. An utter joy to see somebody doing something like >> this in this day and age. Somewhat akin to climbing Everest in a small >> party with a minimum of Sherpas:-) (Maybe not quite up to climbing K2 >> standard). >> >> >> >> Russell >> >=20 > Yes, nice >=20 > though he is using off the shelf coils and also an FPGA. >=20 > Why I wonder? >=20 > Because he can, like the guy making logic circuits and flip flops out=20 > out 11mA filament Russian valves (tubes). >=20 > --=20 > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .