[time-nuts] Divide by five

Brooke Clarke brooke at pacific.net
Fri Nov 7 18:32:35 EST 2014


I have some info on working with SMD parts at:
The key thing is to get parts with a reasonable pitch, 0.1" is a standard DIP pitch.
0.050" (1.27 or 1.25 mm) is half DIP and is easy to do with a fine tip soldering iron and small dia. solder that I 
normally use for other stuff.
The use of a stereo zoom microscope or a magnifying glass/light or 3.25 diopter reading glasses is a big help.

On eBay there are many "surface mount surfboard" that allow you to mount a SMT and then treat it like a SIP so you can 
use prototyping boards.

Another option is to make a ring counter out of transistors.
The beauty is that each transistor is toggling at 2/N of the clock frequency.

Mail_Attachment --
Have Fun,

Brooke Clarke
Chris Albertson wrote:
> On Fri, Nov 7, 2014 at 1:12 PM, Joseph Gray <jgray at zianet.com> wrote:
>> Can anyone recommend a chip that
>> is fast enough and comes in DIP?
> Some SMDs are easy to solder by hand.  Others such as ball grid array is
> impossible.
> An easy SMD prototype board can be made by sawing the edge connectors off
> some old RAM memory or PCI boards and gluing down a parallel row of them.
> Dead bug style works well with SMD also.
> We are going to have to get used to working with these.

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