On Thu, May 20, 2010 at 9:57 AM, vasile surducan <[email protected]>wrote:
> > > On Thu, May 20, 2010 at 9:24 AM, funlw65 <[email protected]> wrote: > >> Hi Vasile, >> >> I'm able to get down to 2 number of drills. As example, for Olimex >> (production files available for all guys from Europe) I prepared 4 >> drills: 0.9, 1.1, 2.1 and 3.3mm > > > This is OK, but not 1.0 and 1,016 or 0.80 and 0.81, etc > > >> counting that it is about plated holes >> and the diameter of drills are the ones from the default equipment of >> Olimex and they don't charge you extra.. >> >> For CNC Router can be smaller bits (0.7 for almost all components and >> 0.9mm for connectors and regulator - for USB connector and DC I can >> enlarge them myself). What diameters you recommend? >> > > any from 0.6mm to as large you need, there is no restriction since is using > one drill in one tool and less than 10 different tools > > >> How thin can be the traces in mil? >> > > 10 mil (0.254mm) and 5mil (0.10mm) for high density > >> >> The Gerber-274x file for bottom copper must be mirrored, or left as it >> is seen from component view? >> > nothing mirored please > >> Which romanian PCB house? >> > > CEE Timisoara [email protected] > > > > >> >> Vasi(funlw65) >> >> On May 20, 7:40 am, vasile surducan <[email protected]> wrote: >> > On Wed, May 19, 2010 at 12:02 PM, Florin Tanasa < >> [email protected]>wrote: >> > >> > >> > >> > > Hi all, >> > > I made some changes to the shield and with great difficulty I made the >> PCB >> > > design. Tracks have 0,25 mm thick. >> > > Attach some pictures of kicad. >> > > In the image snapshot8 because I do not have header with long pin I >> was >> > > thinking to put strip pin on the copper side. >> > >> > Hi Florin, >> > I'm glad to see you have understood some of my points and even applied >> them. >> > I can only guess your design is one layer, maybe I'm wrong. Use the >> largest >> > pad diameters, maybe oblong in all places where is possible. Please try >> to >> > analyze the ground plane separation or ground planes islands connections >> in >> > terms of ground impedance. >> > If a route between two ground islands is very thin, you should use >> either >> > the second ground plane layer or additional straps on component side. >> Use a >> > generous number of straps for such operation if necessary, will save you >> > from big problems. >> > If ground planes could be OK, power supply route thickness could be to >> small >> > (it is denitely too small for the power section of your design). Power >> > supply and ground routes must be treated as analog paths even for >> digital >> > designs. >> > >> > However, living in the village (and design for hobby) you should be >> proud >> > about this design, I've seen many other pour designs made by people with >> > full access to the highest technology. >> > >> > Free offer for you for manufacturing one PCB in CNC technology if you'll >> be >> > able to create the correct gerber and excellon files, meaning the >> minimum >> > number of drills (accepted less than 10) and 10 mil isolation between >> > copper and routes. The same offer still available for Vasi. >> > >> > Instead of Olimex use romanian PCB houses, the price is almost >> identical, >> > the quality is better (and this is a fact not a story). >> > >> > Vasile >> > >> > -- >> > 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 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]<jallib%[email protected]> >> . >> For more options, visit this group at >> http://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.
