ilovefuzz.com

morange wrote:PCB design tutorial

http://alternatezone.com/electronics/fi ... alRevA.pdf

Great read, thanks!

This is awesome, just wanted to pop in and say thank you for putting all of this info in one place.

Man, glad this one doesn't affect me, but the move of professional software to subscription based has been killing me and my wallet.

morange wrote:KiCad has been improving steadily in the past years, and now is definitely a good time for EAGLE users to consider it before signing on to the Autodesk Subscription Plan™.

Yeah, when I started in on it (a couple years ago now) my biggest complaint with KiCad was the library management.

Either I've gotten a lot better at it (arguable) or the newer version has taken great strides in terms of streamlining the process. No more do I have to counter-intuitively re-edit the library reference files for each and every project.

Plus now OSH Park takes the KiCad board file for manufacture, so I no longer have to export separate front and back copper, mask, screen, and drill files. It's downright dreamy.

crochambeau wrote:

morange wrote:KiCad has been improving steadily in the past years, and now is definitely a good time for EAGLE users to consider it before signing on to the Autodesk Subscription Plan™.

Yeah, when I started in on it (a couple years ago now) my biggest complaint with KiCad was the library management.

Either I've gotten a lot better at it (arguable) or the newer version has taken great strides in terms of streamlining the process. No more do I have to counter-intuitively re-edit the library reference files for each and every project.

Plus now OSH Park takes the KiCad board file for manufacture, so I no longer have to export separate front and back copper, mask, screen, and drill files. It's downright dreamy.

the down side is that the pcb are only as good as the best quality from OSHpark. not really a good fab in my opinion.

I've yet to run into a single issue with an OSH board, not that I'm here to sway your opinion.

Regarding KiCad, it also exports gerber just fine. You can batch process all the files/layers except drill, the extra couple key strokes is no big deal.

the problem with OSHpark is that the prices are too high, the turnaround is not fast like it was 4 years ago, the drills are always off center making vias absolute shit although barely functional. the second problem that is not so bad is that the silk screen will be smudged or absent from half the pcb on one out of ten boards. itead is now getting on my shit list for having one in ten pcb have via that actually fail on new pcb and also tented vias randomly half my vias not tented. I order 5 times a month from itead but pretty soon it will be prototype only. I can get cheaper than itead with much better quality just gotta step that big money game up.

eatyourguitar wrote:the drills are always off center making vias absolute shit although barely functional

Hmm, I haven't observed issues like, but thanks - I'll keep my eyes peeled. I try and avoid vias as much as possible, unless we're talking pads, but I have wound up having to stitch a few traces front to back to front again after retroactively installing features and haven't hit any snags yet.

I know they're not the cheapest game in town, but I've been happy so far and I like the fact that it's a domestic production. Once I graduate to 100 piece runs I'll probably look elsewhere, but for low level prototyping & 10x runs they've met my expectations quite well.

But enough about fab houses, while I'm populating the DIY info thread, I feel the urge to link the P.Millet data archive: http://www.tubebooks.org/technical_books_online.htm

http://nwavguy.blogspot.com/2011/07/o2- ... s.html?m=1

Everything about the design of what has become a very popular headphone amp.

http://nwavguy.blogspot.com/2011/07/o2- ... p.html?m=1

I didn't want to open a thread for this, so I'll just ask here:
There is a stabilizer module, pulled from a working Studer 963 Console, I could get on the cheap. It's full of transistors and diodes - could I use those for ("mojo" ) pedal building or should I just leave it?

I found a parts list in the manual, so we're talking about:

10x BC307B (PNP)
3x BC237B (NPN) --> Ram's Head Muff?
1x T2800, BD135.K, BD136.K, 2N5631
--
6x 1N4448
1x 1N4004, MR502



Nothing too exciting in there, except maybe the BC273B's and the MR502?

Thanks.

Unless something there is rarer than I think that's like <$10 in parts and probably not worth it to me.

Current Sources and Voltage References
https://doc.xdevs.com/doc/_Metrology/Pr ... 0_Refs.pdf

NASA Through-Hole Soldering General Requirements
https://workmanship.nasa.gov/lib/insp/2 ... ments.html

Where do you guys get your tag/turret/terminal boards? There's some on ebay but most are too big. Tried doing a search but couldn't find an exact answer.

I'm also curious about this^