2010/8/6 funlw65 <[email protected]> > Much better now and GND shield coverage is good. > 1. - the advantage of the copper pour is that you can un-route the GND > traces and let the pour to make connections - a thing I learned from > Vasile Surducan. It does not work every time so you must check. But I > think this matter only on CNC Router, to minimize operations... >
OK > 2. - the outer diameter of via must be a little bigger than it is now > because the drilling machine can be a little uncalibrated or can be a > human operator mistake - a thing I learned from Olimex documentation > (you must check at your PCB fab. house what is the minimum hole > diameter for vias). > I use DRC rules from Seeedstudio, no error detected, but I think I can make them a little bigger without much problems. Thanks Seb > > Vasi(funlw65) > > On Aug 6, 10:30 am, Sebastien Lelong <[email protected]> > wrote: > > Hi Vasi(&le), > > > > Thanks, I forgot this ! Attached are top/bottom screenshots with GND > pane. > > You'll notice there's no more "orphan island" anymore, and autorouting > while > > 100% routed doesn't produce the weird traces I was talking about. > > > > PS: I did notice about long traces on OSC pins, I first removed them > > (internal oscillator only) then re-added as I had some remaining space. > > Maybe I could add on board Xtal + caps instead (but that's a lot of > space), > > with solder jumpers ? > > > > PPS: it wasn't that late after all :) > > > > Cheers, > > Seb > > > > 2010/8/6 funlw65 <[email protected]> > > > > > > > > > I'm tired now, but I think the entire copper pour is not GND. > > > Sebastien, you need to click-right on the edge of your rectangle and > > > choose "Name" from the menu and then rename it to GND.... > > > If you did, then sorry, skip over - it is very late now... > > > > > Vasi(funlw65) > > > > > On Aug 6, 3:19 am, vasile surducan <[email protected]> wrote: > > > > Because, Arduino like many others is a poor design. You have noticed > > > well, > > > > an orphan is asking for trouble. As the long routes (where any cm of > > > route > > > > means 0.5 to 0.7 pF parasitical capacitor) on the OSC pins with > > > > discontinuities like jumpers. > > > > Vasile > > > > > > On Thu, Aug 5, 2010 at 11:48 AM, funlw65 <[email protected]> wrote: > > > > > No, it's ok, I saw also original Arduino design have orphans... > > > > > > > Vasi(funlw65) > > > > > > > On Aug 5, 6:03 pm, Sebastien Lelong <[email protected]> > > > > > wrote: > > > > > > Hi Vasi, > > > > > > > > 2010/8/5 funlw65 <[email protected]> > > > > > > > > > Hi Sebastien, > > > > > > > > > Good job, I like it very much. Is a nice addition to an Arduino > > > board. > > > > > > > You tried to see how it looks if you remove those orphan > islands > > > from > > > > > > > the copper pour? > > > > > > > > What do you mean with these orphan islands ? Some copper is > > > automatically > > > > > > added by Eagle with Ratsness feature, this can explain those > little > > > piece > > > > > of > > > > > > copper. I may need to adjust ratsness parameters to remove them > if > > > this > > > > > is a > > > > > > problem. > > > > > > > > Cheers, > > > > > > Seb > > > > > > > > > Vasi(funlw65) > > > > > > > > > On Aug 5, 3:56 pm, Sebastien Lelong < > [email protected]> > > > > > > > wrote: > > > > > > > > Hi guys, > > > > > > > > > > I tried to design Cuckoo PCB, attached are Eagle files and > > > screenshot > > > > > for > > > > > > > > bottom and top layers. Most traces are 16mil width, sometime > > > 14mil to > > > > > > > pass > > > > > > > > between holes, and 5V/GND traces are 20mil. > > > > > > > > > > This is a double-sided PCB, aimed to be plugged upside down: > > > bottom > > > > > side, > > > > > > > > where Cuckoo drawing is visible, is the one that can be > viewed > > > when > > > > > > > plugged > > > > > > > > on Arduino. PIC, and most components will be hidden by the > board. > > > In > > > > > my > > > > > > > > "reckoning" is correct, components should fit appropriately > > > between > > > > > > > Atmega > > > > > > > > chipset, Xtal, push button and shield connectors. Maybe... > > > > > > > > > > Subsidiary question: in Eagle, I manually route traces, and > added > > > > > > > ratsness > > > > > > > > rectangle. I wanted to check if no unrouted traces were > remaining > > > (I > > > > > know > > > > > > > > there weren't but...), and Eagle started to create new > signals, > > > with > > > > > very > > > > > > > > little traces and vias. There weren't connected to any > existing > > > > > signals, > > > > > > > > it's as though it was to "cut" ratsness rectangle. I've > removed > > > them. > > > > > > > Does > > > > > > > > anyone know what's the purpose of such added traces/signals ? > > > > > > > > > > As reply to you, Sir Vasile Surducan: > > > > > > > > > > 2010/7/24 vasile surducan <[email protected]> > > > > > > > > > > > We had a looong discussion about ICSP some time ago, so > this is > > > the > > > > > > > last > > > > > > > > > time I'm opening again my mouth (by writting) about this > > > subject. > > > > > > > > > Put a 47nF... 100nF capacitor in parallel with your reset > > > switch, > > > > > in > > > > > > > that > > > > > > > > > way when turn ON the power supply, reset will be > automatically, > > > > > change > > > > > > > R1 > > > > > > > > > from 1k2 to 10k...33k and take out that diode. > > > > > > > > > See for reference (only if consider those above) this one: > > > > > > > > http://4.bp.blogspot.com/_0iJadzFlwNo/S_OgtycPtxI/AAAAAAAAAAc/vNesIW3. > > > > > > > .. > > > > > > > > > > Due to lack of space, I've removed reset switch. About reset > > > > > resistor, > > > > > > > > Arduino already has one, 10K, connected from RESET /MCLR to > +5V. > > > If I > > > > > had > > > > > > > > added another resistor on Cuckoo board, both resistors would > have > > > > > been in > > > > > > > > parallel, resulting in a "not so good value I guess". So, > I've > > > made > > > > > > > cuckoo > > > > > > > > reset resistor optional (for standalone usage, not connected > to > > > > > Arduino), > > > > > > > > and let MCLR connected to Arduino reset circuitry (that is > 10K). > > > > > > > > > > Diode was removed. > > > > > > > > > > > < > > > > >http://4.bp.blogspot.com/_0iJadzFlwNo/S_OgtycPtxI/AAAAAAAAAAc/vNesIW3.. > > > > > > > .>Switching > > > > > > > > > the clock through a switch is a very bad idea. Very long > routes > > > of > > > > > > > clock > > > > > > > > > (incuding connectors in their path) is also a bad idea. > > > > > > > > > > Connecting to Arduino Xtal is now optional. By default, > internal > > > > > clock > > > > > > > will > > > > > > > > be recommanded (16MHz, same MIPS in the end). > > > > > > > > > > > If you want to start a merchantable new arduino, imagine > the > > > puzzle > > > > > > > game > > > > > > > > > (on a surface and not a startrek spatial puzzle) and > imagine a > > > > > complete > > > > > > > > > jalluino-picolino (including "shields" ) in that way. > Picolino > > > = > > > > > very > > > > > > > small > > > > > > > > > > Sure, how do we proceed ? > > > > > > > > > > I think I'll try to build it with some cardboard, to check if > all > > > > > > > components > > > > > > > > fit well. Then I plan to order PCBs from Seeedstudio > prototyping > > > > > > > service... > > > > > > > > > > Cheers, > > > > > > > > Seb > > > > > > > > > > cuckoo_pcb_top.png > > > > > > > > 360KViewDownload > > > > > > > > > > cuckoo_pcb_bottom.png > > > > > > > > 367KViewDownload > > > > > > > > > > cuckoo.sch > > > > > > > > 228KViewDownload > > > > > > > > > > cuckoo.brd > > > > > > > > 66KViewDownload > > > > > > > > > > cuckoo_sch.png > > > > > > > > 28KViewDownload > > > > > > > > > -- > > > > > > > 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]> > <jallib%[email protected]<jallib%[email protected]> > > > > > <jallib%[email protected]<jallib%[email protected]> > <jallib%[email protected]<jallib%[email protected]> > > > > > > > > > <jallib%[email protected]<jallib%[email protected]> > <jallib%[email protected]<jallib%[email protected]> > > > > > <jallib%[email protected]<jallib%[email protected]> > <jallib%[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]<jallib%[email protected]> > <jallib%[email protected]<jallib%[email protected]> > > > > > <jallib%[email protected]<jallib%[email protected]> > <jallib%[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]<jallib%[email protected]> > <jallib%[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 > > > > cuckoo_pcb_bottom.png > > 294KViewDownload > > > > cuckoo_pcb_top.png > > 327KViewDownload > > -- > 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 Lelong http://www.sirloon.net http://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 at http://groups.google.com/group/jallib?hl=en.
