If you add another row of pads each side of the 20pin DIP you could then use the wider 0.6 spacing chips as well. You just fit the correct socket for the chip you want to use. If you wanted to make the board able to switch between the two chip sizes, then you could use single in line sockets, but I was thinking more along the lines that you would use the board for one type of chip, and just fit whichever socket was required.
Andy On Tue, 24 Nov 2009 18:00:25 -0800 rocko <[email protected]> wrote: > AHA! so it's the spacing between pads/holes > kinda thought so. > Putting the sockets inside one another was my first thought. > > I've took your advice and re-designed my pluto board. > Added a 20 pin DIP and changed the layout a bit. > It's only slightly larger about 8.5 sq inches. > I uploaded a pic. > > On Wed, 2009-11-25 at 01:34 +0000, Andy Eskelson wrote: > > > > > > Think of veroboard 0.1 spacing. A normal 16pin dil is 4 holes across. > > The > > larger 24-40 pin chips are 7 holes across. > > > > If you are really sneaky (not to mention desperate) you can fit the > > smaller sized chip in between the socket of the larger size. (I've > > only > > come across one board that did that) > > > > Goto the main Amtel AVR site and look at their support section. You > > can > > download all sorts of tools and such like. I don't know how "free" > > they > > are, but there are usually versions that work well enough for playing > > about with. > > > > The same goes for the PIC systems. > > > > Andy > > > > On Tue, 24 Nov 2009 17:23:05 -0800 > > rocko <[email protected]> wrote: > > > > > when you say 0.3 and 0.6 do you spacing between the holes/pads? > > > Or the size of the pads themselves? > > > > > > Thanks for the tip on the AVR, i had no idea you could program > > > AVR's with basic, their seems to be a lot of supported chips too. > > > > > > I took Basic a million years ago, back when it used things like > > > GOTO,and GOSUB, but it's all pretty easy. > > > I have a couple of picaxes that uses real simple basic commands. > > > Looks like i might buy myself a couple AVR's for xmas. > > > > > > On Wed, 2009-11-25 at 00:58 +0000, Andy Eskelson wrote: > > > > > > > > > > > > Pic's come in all sizes and packages. 8, 18 24 both skinny 0.3 > > width > > > > and > > > > normal 0.6 and so on. As do AVR's > > > > > > > > I've not done any AVR programming, but there are lots of tools > > > > available, > > > > you don't need to use C. Look at Bascom which is a basic-like > > > > programming > > > > system for the AVR > > > > > > > > I use plain old machine code for the PIC, however there are C and > > > > basic > > > > systems for these as well, esp the higher end 18 series. > > > > > > > > Using 0.3 and 0.6; No, not side by side just have enough width and > > > > holes > > > > available so that the wider chip straddles the 0.3 location. > > > > > > > > x=hole, 3=0.3 6=0.6 .=no track > > > > > > > > xxxxx6x3.36xxxxx > > > > xxxxx6x3.36xxxxx > > > > xxxxx6x3.36xxxxx > > > > xxxxx6x3.36xxxxx > > > > .... > > > > > > > > and so on > > > > > > > > Andy > > > > > > > > On Tue, 24 Nov 2009 11:42:05 -0800 > > > > rocko <[email protected]> wrote: > > > > > > > > > Funny I was thinking the same thing after I was finished. > > > > > Changing to a 18 pin wouldn't increase the board size, > > > > > so my cost wouldn't go up. > > > > > Pretty sure I could fit a 20 pin, I'll have to give it a try. > > > > > As for a 28 pin that's good idea also, but I don't use > > > > > anything larger than 20 pin atm, thats more of a AVR/PIC thing. > > > > > > > > > > I always wanted to try AVR programming, but I dont know any C/C > > ++. > > > > > I do have an Arduino and it's fairly easy to program, but it's > > not > > > > > really C. More simplified version. > > > > > > > > > > Any way I just might make a 28 pin proto board for the heck of > > it, > > > > > I'm sure someone would find a use for it. > > > > > > > > > > > > > > > "If you extend the size up to 20+ pins I would also > > > > > make that area able to take both 0.3 and 0.6 spacing chips." > > > > > > > > > > I'm not sure on how to do that? > > > > > Do you mean put 2 dip modules side by side? > > > > > > > > > > > > > > > > > > > > On Tue, 2009-11-24 at 11:31 +0000, Andy Eskelson wrote: > > > > > > > > > > > > A couple of suggestions: > > > > > > > > > > > > You are limiting yourself a little by using a DIP16 > > > > > > There are many chips such as microcontrollers in larger > > packages. > > > > e.g. > > > > > > the Microchip PIC which is available in 8, 18, 20 28 pin > > packages > > > > and > > > > > > so > > > > > > on. > > > > > > > > > > > > Obviously a 40 pin package is rather large, and I doubt if you > > are > > > > > > thinking along those lines, however you would increase the > > range > > > > of > > > > > > your > > > > > > board if you made the chip area able to take larger chips. > > > > > > I would certainly increase it to 18pin dip, and if the size is > > not > > > > > > such a > > > > > > problem up to 28pin. If you extend the size up to 20+ pins I > > would > > > > > > also > > > > > > make that area able to take both 0.3 and 0.6 spacing chips. > > > > > > > > > > > > Andy > > > > > > > > > > > > On Mon, 23 Nov 2009 19:23:49 -0800 > > > > > > rocko <[email protected]> wrote: > > > > > > > > > > > > > wow, that first pic is kinda small, can't really see it too > > > > well. > > > > > > > Iv'e attached a larger pic this time. > > > > > > > > > > > > > > On Mon, 2009-11-23 at 19:06 -0800, rocko wrote: > > > > > > > > > > > > > > > > [Attachment(s) from rocko included below] > > > > > > > > I know the name is kinda lame, but I was up all night > > > > > > > > finishing my little proto board and decided to give > > > > > > > > it that name, you know lack of sleep and all. > > > > > > > > > > > > > > > > I'm always making little projects with the 4000 series > > cmos > > > > > > > > chips, mostly oscillators for mini synth/noise boxes, and > > > > needed > > > > > > > > something a little better than vero/strip board after > > > > > > breadboarding. > > > > > > > > > > > > > > > > the board is only 7.38 sq inches, BatchPCB wanst $18 for > > one > > > > > > board. > > > > > > > > But if I order from Golden Phoenix it's only about $7. > > which > > > > aint > > > > > > > > too bad. > > > > > > > > Advanced Circuits charges less than $4 per board, but I > > gotta > > > > > > order > > > > > > > > like 150 of them. > > > > > > > > Don't really need that many, I suppose i could sell what I > > > > don't > > > > > > > > use, but this isn't that useful of a board, not sure if > > anyone > > > > > > else > > > > > > > > would be interested. > > > > > > > > > > > > > > > > Any way I've attached a .png from the 3d viewer. > > > > > > > > I know it's not much, but it fulfills a need, at least for > > me. > > > > > > > > Suggestions as always. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ------------------------------------ > > > > > > > > > > > > > > Please read the Kicad FAQ in the group files section before > > > > posting > > > > > > your question. > > > > > > > Please post your bug reports here. They will be picked up by > > the > > > > > > creator of Kicad. > > > > > > > Please visit http://www.kicadlib.org for details of how to > > > > > > contribute your symbols/modules to the kicad library. > > > > > > > For building Kicad from source and other development > > questions > > > > visit > > > > > > the kicad-devel group at > > > > > > http://groups.yahoo.com/group/kicad-develYahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ------------------------------------ > > > > > > > > > > Please read the Kicad FAQ in the group files section before > > posting > > > > your question. > > > > > Please post your bug reports here. They will be picked up by the > > > > creator of Kicad. > > > > > Please visit http://www.kicadlib.org for details of how to > > > > contribute your symbols/modules to the kicad library. > > > > > For building Kicad from source and other development questions > > visit > > > > the kicad-devel group at > > > > http://groups.yahoo.com/group/kicad-develYahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ------------------------------------ > > > > > > Please read the Kicad FAQ in the group files section before posting > > your question. > > > Please post your bug reports here. They will be picked up by the > > creator of Kicad. > > > Please visit http://www.kicadlib.org for details of how to > > contribute your symbols/modules to the kicad library. > > > For building Kicad from source and other development questions visit > > the kicad-devel group at > > http://groups.yahoo.com/group/kicad-develYahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > ------------------------------------ > > Please read the Kicad FAQ in the group files section before posting your > question. > Please post your bug reports here. They will be picked up by the creator of > Kicad. > Please visit http://www.kicadlib.org for details of how to contribute your > symbols/modules to the kicad library. > For building Kicad from source and other development questions visit the > kicad-devel group at http://groups.yahoo.com/group/kicad-develYahoo! Groups > Links > > >
