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 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? How thin can be the traces in mil? The Gerber-274x file for bottom copper must be mirrored, or left as it is seen from component view? Which romanian PCB house? 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]. > 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.
