Hi That's certainly the conclusion the TAPR guys came to. As they have found out, you need to do a run of hundreds to make it worth doing. Having a pro do it eliminates a whole lot of constraints on parts and sources.
Bob On Dec 17, 2010, at 4:31 AM, David C. Partridge wrote: > If your spend is in that sort of region it doesn't cost a great deal more to > get a batch of boards professionally pasted, picked, placed and reflowed. > > Regards, > David Partridge > > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of Bob Camp > Sent: 16 December 2010 19:20 > To: 'Discussion of precise time and frequency measurement' > Subject: Re: [time-nuts] Frequency counter recommendation > > Hi > > Yes indeed, been there done that. Not very hard at all. > > All you need is the six layer pc board (can be bought), the FPGA (Digikey has > them), a few of these and a couple of those. Spend less than $100 and you are > in business if the PC board volume is high enough. > > In this case the next step in the business is to solder the 256 ball 1 mm > spacing BGA package down on the pc board. Not so easy without the right > tools... > > Bob > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
