AVR-Chat

Tony, as for your note about soldering them, it's not really that
difficult, do you own a cheap toaster oven?

On 6/10/05, arhodes19044 <spamiam@comcast.net> wrote:
> Good question.
> 
> One alternative already suggested is an adapter such as a "surfboard" 
> or similar.  The problem is tha amount of square inches required for 
> the conversion from smt to 0.1 spacing pins.  All those pins take up a 
> huge amount of space!!!!
> 
> I just do not see how I can reliably solder all those tiny SMT 
> connexions.  I would have to use my loupes for sure.  ALso a new iron 
> with the 1/64" tip....
> 
> What I have done for my current project is to use a Mavric development 
> board piggybacked to what will be my custom PCB which has the voltage 
> regulation and glue logic and other specific devices to interract with 
> the development board.  So, I am using the development board as a very 
> complex (expensive) adapter for the 128, so all I need to do is 
> concentrate on the application specific hardware.
> 
> Probably I will also make the power supply/regulation separate too.
> 
> However, I can see the need to use a socket for a 128 processor to cut 
> costs.  Unfortunately the support hardware for the processor is an 
> issue as well.
> 
> I may well end up using an Olimex board which is square and about 1.5" 
> on a side or so.  It has most of the support hardware for the 128. 
> (i.e. JTAG, crystals, etc.  It does not appear to have entirely 
> adequate AVCC handling from what I saw.   I do not think it has the 
> filtering recommended by Atmel.
> 
> -Tony
> 
> 
> --- In AVR-Chat@yahoogroups.com, "Alex De Lara" <alex_de_lara@y...> 
> 
> wrote:
> > I just landed on the backyard of the ATmegas and the first prototype
> > is already on my sight.. however, as experience has taught me it is
> > always good to assemble hardware prototypes in sockets.
> > It happens that these ATmegas use 64 pins on MLF and TQFP which 
> > there is no easy fit around. Needless to say that it's impossible
> > to fit this IC on a protoboard...
> > 
> > Anyone has had such a hard time like this ? 
> > 
> > Thanks.
> 
> 
> 
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