OK, when you have a definitive project send me the eagle files and I'll try to make for you one PCB. I'm in holiday right now but I'll go to my work for this job in one day. If you have patience till september I can send directly from Paris, else I'll send it from here, the airplane expedition with receive confirmation it was about 6 euro last time...
Vasile On Thu, Aug 5, 2010 at 5:56 AM, 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/vNesIW3Nvn0/s1600/fig2.jpg >> > > 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/vNesIW3Nvn0/s1600/fig2.jpg>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 > > -- > 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.
