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Re: [N8VEM-S100:2468] Re: Board Run: Unbuffered Prototyping

The milling-approach does make some sense for one-of-a-kind, quick-turn-around, 1- or 2-sided.  But forget the PTH (and multi-layer :->).  You solder a small wire through-hole and then snip the two sides close.  If you're trying to achieve the same effect with a component-lead then you need to ensure that both sides are well-soldered.

If you've already got the rig for another (conventional?) purpose, it does look like a useful approach to PCB-engineering.


On Mon, Feb 24, 2014 at 12:35 AM, Crusty OMO <crus...@hotmail.com> wrote:
Hi Jack,
 
My post office charges $3 for a nice plastic bubble mailer, but I hardly think it's worth it.
I have a lot of thin foam, I can easily wrap the boards in paper and give it a criss cross of shipping tape to keep the board from escaping.
So that just leaves me with the shipping costs from within the US... if people are willing to wait until April for boards.
If not willing to wait, then it will cost more to ship from Canada.  I guess everyone can order at their own speed.
 
Nice video of a milled PCB but I had to fast forward to the end product.  I wonder how fine a trace it can do?  Those CNC machines are not at all expensive... but then again, what else is needed? Interface? Routing Bits? etc.

Cheers,
Josh
 
From: j...@ckrubin.us
To: n8vem...@googlegroups.com
Subject: RE: [N8VEM-S100:2467] Re: Board Run: Unbuffered Prototyping
Date: Mon, 24 Feb 2014 02:57:33 +0000


The US Postal Service provides various sorts of free packing materials for their priority and express services. Take a look at http://postcalc.usps.com/Default.aspx . I often use their foam envelopes inside other packages to provide padding.

 

Of course, it seems unlikely that they would deliver them to you in Toronto but I’d be glad to forward to you. Domestically, I’ve received my boards from Andrew in a plain brown envelope with first class postage. Generally I’ve received the boards undamaged but on the last shipment – then new Z80 board – I received an empty envelope. The board had sliced through the end of the envelope somewhere on its journey and escaped. Tape on the edges of the envelope probably would have saved it without increasing the cost of mailing.

 

Jack

 

From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On Behalf Of Crusty OMO
Sent: Sunday, February 23, 2014 8:13 PM
To: n8vem...@googlegroups.com
Subject: RE: [N8VEM-S100:2466] Re: Board Run: Unbuffered Prototyping

 

I want to know where he bought this stuff from.  I'm hoping once I get this run going, to drive across the boarder in April and mail them from there.
 

 

From: steven.f...@gmail.com
Date: Sun, 23 Feb 2014 19:34:08 -0500
Subject: Re: [N8VEM-S100:2465] Re: Board Run: Unbuffered Prototyping
To: n8vem...@googlegroups.com

Andrew used postal office priority express envelope to cover the board and insert cushion type envelope for delivery. May I suggest you to same way but insert hard cardboard sheets to increase secure the board and allow one or two inches larger than the board because of postal service tend to handle any envelope/package very rough. So far, Andrew sent me several times and none of them damage lately. Recently, my wife got her new personal license plates for her car. Unfortunately, it bend one corner because DMV used thin envelope without something to secure the plates. :-(

 

On Sun, Feb 23, 2014 at 7:07 PM, Crusty OMO <crus...@hotmail.com> wrote:

Andrew,
 
Question about shipping packages.  I can't remember how you ship your boards, were you just wrapping them in paper or did you buy evelopes at the post office? 
 
:)Josh

 

Subject: RE: [N8VEM-S100:2462] Re: Board Run: Unbuffered Prototyping
Date: Sun, 23 Feb 2014 12:24:55 -0500

 

Hi Josh
I’ve never used KiCAD like that.  I just do the whole process of schematic capture, build network, layout PCB.  It is an investment in time but makes changing it much easier.  Possible PCBnew would support the functionality but I’ve never heard of it before.

Thanks and good luck!

Andrew Lynch
 

From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On Behalf Of Crusty OMO
Sent: Saturday, February 22, 2014 5:58 PM
To: n8vem...@googlegroups.com
Subject: RE: [N8VEM-S100:2455] Re: Board Run: Unbuffered Prototyping

 

Andrew,
 
Do you know if KiCad has a "Manual" transmission?
For a dozen components, I don't want to build a schematic, netlist, associate parts...  I rather just drop modules (or foot prints?) and draw my own traces manually.  Presently, the design rules are enforced, I wish to just disable them.  I'm quite carefull to not cross traces, etc.
 
When I would use Ultimate PCB, this was the first thing I would do... disable those nusiance design rules... we don't need no stinking rules.
 
I'm hoping it's somewhere in the help file, I'm about 1/2 way through reading the help file... although I can see the help file is a bit out of sync with the latest copy of KiCad. 
 
Cheers,
Josh

 

From: LYN...@YAHOO.COM
To: n8vem...@googlegroups.com
Subject: RE: [N8VEM-S100:2397] Re: Board Run: Unbuffered Prototyping
Date: Sat, 15 Feb 2014 16:04:41 -0500

Hi
I think the builders ordering the S-100 regular prototyping board will probably be first to order boards. 
 
Please take notes of your steps and post them on the wiki as a web page.
 
The other builders can follow your steps and/or make improvements on the process.
 
I will be glad to help with editing and suggestions.
 
Thanks and have a nice day!

Andrew Lynch
 

From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On Behalf Of Paul Birkel
Sent: Saturday, February 15, 2014 10:16 AM
To: n8vem...@googlegroups.com
Subject: Re: [N8VEM-S100:2396] Re: Board Run: Unbuffered Prototyping

 

All "trained" Josh ::->?

Anyway ... I've decided to stock up along with Steven.  Please list me for 7 boards, which for me ought to definitely be a lifetime-supply .... grabbing for the gusto (well) in advance!

Thanks.  May one inquire (and get a reply :->) as to the acronym expansion for "OMO"?

 

On Mon, Feb 10, 2014 at 8:13 PM, Crusty OMO <crus...@hotmail.com> wrote:

Thanks Matt.

I'm going to verify pricing first, once I know the exact the cost, I'll announce it to the group.
I expect shipping to be more, but I hope to get a cheaper price for the board.  Then we need to guess the exchange rate.

Cheers,
Josh

 

From: turner...@hotmail.com
To: n8vem...@googlegroups.com
Subject: RE: [N8VEM-S100:2389] Re: Board Run: Unbuffered Prototyping
Date: Mon, 10 Feb 2014 18:40:27 -0500

 

Please put me down for two (2) boards. I'll keep them just in case. Let me know who to wire the Paypal to.
 
Regards,
 
Matt Turner
 

From: crus...@hotmail.com
To: n8vem...@googlegroups.com
Subject: RE: [N8VEM-S100:2388] Re: Board Run: Unbuffered Prototyping
Date: Mon, 10 Feb 2014 23:28:28 +0000

Thanks for chiming in Steven,  ok, then it's settled.  I am in a training course this week, but I can start the process of production next week.

Cheers,
Josh

Date: Mon, 10 Feb 2014 14:58:50 -0800
From: steven.f...@gmail.com
To: n8vem...@googlegroups.com
Subject: [N8VEM-S100:2388] Re: Board Run: Unbuffered Prototyping

Hi,

I live in northern Virginia. I am interesting to purchase 6 unbuffered prototyping board for this coming March due to my restricted budget. I am not surprise about many people may not interesting to buy the prototyping boards because of tremendous expensive to buy wirewarp equipment nowadays.

Secondly, I am still thinking about drilling/milling machine (see eBay and search for 3020 desktop router engraver drilling/milling engraving machine cnc. Also, see http://www.youtube.com/watch?v=na9-USi_hZQ NOTE: should have large clear plexiglass enclosure to avoid fiberglass dust into lungs. The only disadvantage about this method that have lack of vias (between layers. It may need to solder both sides as much as like old days with Tarbell Cassette Interface board.

This will be great for prototyping work???



On Saturday, February 8, 2014 2:49:12 AM UTC-5, pbirkel wrote:

Josh:  Both Steven Feinsmith and myself have recently expressed interest in a run of the unbuffered prototyping board.  I have brought this topic up several times over the past year or so (most recently 2-3 weeks ago, without response) but there's been insufficient interest (borderline none) and I haven't had sufficient immediate need to strike out on my own with a run of only a few much-more-expensive boards.  I'd like to see us get the volume up to the point that we approach/reach the $20 per-board cost, but that means at least 20 boards.  I'm not sure that each of us wants 7 boards ... but three interested parties is certainly better than just one :->.

I'm located in Maryland; not sure where Steven is located.  I gather that CA-US shipping cost is asymmetric -- here-to-there is cheaper than there-to-here?

I'd be willing to serve as "trail boss" if there's sufficient interest.  Andrew did offer to get me started last week, but I still await sufficient interest ...

Can I get commitments on board counts from interested folks, please?

Thanks,

paul

 

On Fri, Feb 7, 2014 at 6:10 PM, Crusty OMO <cru...@hotmail.com> wrote:

Hi Group,
 
I am thinking of helping out and doing a board run.  I was planning on doing the unbuffered prototype board, but Andrew thought someone else here may already have that in motion?  First, let me start by saying I'm in Canada, so it may be a little more costly to ship to the US, but internationally it might not make any difference.
 
Can we hear a vote of which boards to build, and a show of hands who might want to build them?
 
I don't want to organize the group... but with a little communication I believe we can organize ourselves.
 
Regards,
Josh
 


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