The 3 empty boards look like a structural thing. PCB is cheap and tough Matt.
On Nov 3, 4:48 pm, Joep Suijs <[email protected]> wrote: > What is the point of having 3 almost empty board and a cell? > > Joep > > 2010/11/3 funlw65(Vasi) <[email protected]>: > > > Here: > >http://jpmandon.blogspot.com/2010/11/partybot.html > > is an example of how to use Jaluino CELL in a real application. > > Warning, this is not for our PCB guru :) . > > > Vasi > > > On Nov 3, 12:05 pm, Sebastien Lelong <[email protected]> > > wrote: > >> I think you need to cut caps' wires ends after soldering :) > > >> Cheers, > >> Seb > > >> 2010/11/3 funlw65(Vasi) <[email protected]> > > >> > This is how it looks underside: > >> >http://picasaweb.google.com/funlw65/20100513#5535259872597475378 > > >> > On Nov 2, 5:56 pm, mattschinkel <[email protected]> wrote: > >> > > The actual parts are cheaper in SMD as well. > > >> > > Matt. > > >> > > On Nov 2, 5:27 am, Oliver Seitz <[email protected]> wrote: > > >> > > > > SMD versions would be cheaper to manufacturer. > > >> > > > That's true. I've once asked my PCB assembling company, and they told > >> > me how PCBs are populated: > > >> > > > 1. solder paste is applied to the top side for SMDs using a stencil > >> > > > 2. top-side SMDs are placed in the paste > >> > > > 3. top-side SMDs are soldered (infrared, hot-air or the like) > >> > > > 4. bottom-side SMDs are glued in place without solder paste > >> > > > 5. the glue is dried. This takes its time and therefore costs money > >> > > > 6. top-side THTs are placed > >> > > > 7. top-side THTs and bottom-side SMDs are soldered (possibly > >> > > > selective, > >> > wave soldering or the like) > >> > > > 8. bottom-side THTs are placed and soldered by hand. That's > >> > > > expensive, > >> > of course. > > >> > > > So, cheapest is SMD with parts on one side only. Next is THT only. > >> > > > Then > >> > come mixed SMD and THT with all parts on one side. Then SMD on both sides > >> > plus THT on top side only. The most expensive are PCBs with SMD and THT, > >> > both on both sides. > > >> > > > I'm not sure where to put "SMDs on both sides, no THTs" as it could > >> > well be that no glue is necessary then. > > >> > > > All of this only applies to automatically populated PCBs in perhaps > >> > > > 100 > >> > pieces or more. For low quantities, THT might even be cheaper as no > >> > solder-paste stencil has to be made. > > >> > > > Greets, > >> > > > Kiste > > >> > -- > >> > You received this message because you are subscribed to the Google Groups > >> > "jallib" group. > >> > To post to this group, send email to [email protected]. > >> > To unsubscribe from this group, send email to > >> > [email protected]<jallib%[email protected]> > >> > . > >> > For more options, visit this group at > >> >http://groups.google.com/group/jallib?hl=en. > > >> -- > >> Sébastien Lelonghttp://www.sirloon.nethttp://sirbot.org > > > -- > > You received this message because you are subscribed to the Google Groups > > "jallib" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > > [email protected]. > > For more options, visit this group > > athttp://groups.google.com/group/jallib?hl=en. > > -- You received this message because you are subscribed to the Google Groups "jallib" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/jallib?hl=en.
