Jon Elson wrote: > John Kasunich gives an excellent response, but didn't mention > connectors.
Actually, I did, in some detail: >> There is a minimum cost for just about any electronic "thing" made >> in small quantities. It comes from the bare PC board, cables, >> connectors, bypass capacitors, and other basic parts. >> >> For example, a quick search at Digikey says that the cheapest >> (qty 1) parport connector (25 pin D-shell) is $2.62. So the >> connector alone costs more than the PIC. And that doesn't even >> start to address the connectors on the other end - going to the >> encoder and motor or drive. You provide some good detail though - of the $97 total parts cost, only $12, or just a hair over one-eighth of the total, is the main "brain". It seems like nobody ever thinks about the other seven-eighths when these projects are being discussed. I want to see these projects succeed as much as anyone - but you MUST focus on the big ticket items. "Servo under $100" needs a clever way to reduce the "overhead" costs of board, connectors, and packaging, much more than it needs a suitable packet format. Regards, John Kasunich ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
