sorry, the 'send button' got pressed inadvertently. so, i was saying that the basic circuit of minima should work without any hard to get parts. a design like TAK40, though very smart and clever, involved lucking out with some parts. that's something i'd like to avoid with the minima. - f On Mon, Mar 3, 2014 at 9:42 AM, Ashhar Farhan <farhanbox@xxxxxxxxx> wrote: > The minima will branch off with various mechanisms for tuning,etc. But the > 'standard tuning' offered with the base design needed to be something that > wouldn't req > > > On Mon, Mar 3, 2014 at 9:26 AM, Dave <dave@xxxxxxxxxx> wrote: > >> Mac: >> This was done on the TAK40 which won the QST $50 40M transceiver >> contest in 2008. The project fileis at >> <http://www.arrl.org/files/file/QST%20Binaries/QS0508Veatch.zip> >> >> Dave - WB6DHW >> <http://wb6dhw.com> >> >> >> On 3/2/2014 7:15 PM, Mac A. Cody wrote: >> >>> I think that the rotary encoder found in a scroll-wheel >>> mousewould work for this application and be relatively cheap. >>> I used one of these a few years ago on an experimental, >>> software-defined direct conversion receiver using a Cypress >>> PSoC microcontroller and an Si570 for a VFO. I gutted a >>> scroll-wheel mouse to bring the rotary encoder button >>> signals out on the PS2 cable to the microcontroller. It >>> required debouncing, as any rotary encoder does, and it >>> worked well. >>> >>> 73, >>> >>> Mac AE5PH >>> >>> >>> On 03/02/2014 08:56 PM, Sandeep Lohia wrote: >>> >>>> Sub : Rotary Encoder ( Jon Lee_firmware ) + hardware modification >>>> ---------------------------------------------------------------------------- >>>> >>>> >>>> >>>> problem with CFR_Pot is that they don't last long, & a sudden change >>>> in... >>>> nor can I afford wire-wound... but happens to have 4 extra coders in >>>> handy here >>>> >>>> rotary encoder being more economic then a good quality wire wound >>>> pot, but at the curse of availability only in Metro Cities. >>>> >>>> push buttons ( up & down ) might be another simple approach... >>>> >>>> -------------------------------------------- >>>> >>>> playing with codE >>>> just needs key-boarD >>>> >>>> but what is your extra-terrestrial setup for tuning ? >>>> with encoder Sir, that you have already done with... >>>> it might be useful for others too... (if U share) >>>> in initial stage of R&D >>>> >>>> Manhattan is not my flavor, but taste can change anytime... >>>> >>>> as in now, at least I am OK drilling holes & ready with surgical >>>> knife @ my distributed PCB >>>> but it is only going to mean slight modification to the control board >>>> or major issue??? >>>> >>>> if others too wana play with Rotary Encoder @ Adrian's designed PCB >>>> >>>> --------------------------------------------- >>>> >>>> Boards might take some time to reach you guys in British Isles >>>> I have written on it as ' FREE GIFT, HOBBY PCB, EDUCATIONAL' >>>> to a university address, from there it will be distributed locally, >>>> via domestic. >>>> >>>> so that it won't get stuck in customs. >>>> >>>> --------------------------------------------- >>>> >>>> O YAA! Software dependent RIG it is !!! >>>> >>>> >>>> >>> >>> >>> >>> >> >> >