Thread
Another IIci ROM hack
Regarding the price calculations at seed studio, I think you overlooked the surcharge for going with thinner circuit board. Or am I misremembering that?
The page says:
Another awesome thing about that place
Are you talking like axial electrolytic capacitors, or something else? What kind of capacitor could I use? Either way, I like it! I didn't even consider just skipping surface mount capacitors. With the through hole sockets, it may be easier just to use through hole capacitors as well. Pretty cool
Yup, axial caps. Check out the multiple contact shielded ribbon cables jumpes on the left!
If you need some for 2-sided proto-board for the project . . .
. . . I think I've got a box of 1,000! }
edit: it's an almost entirely full 250 quantity box of AMP part # 88315-1
I got them for doing Mechanical Switch KBD PCBs, which are basically one sided boards with some patch wire "trace jumpers."
Ah, thanks! I think if i can use through hole caps, I'll be in good shape. I don't think I'm in need of any proto board but thanks!
Well, I'm almost done routing the through hole PLCC socket SIMM. It's a bit taller now (about 1.5 inches). Any clearance problems in the SE/30 for instance?
Also there isn't a lot of room for much ground fill type stuff, especially near the sockets because I have so many traces going through them. Will that pose any problems?
Well, I'm almost done routing the through hole PLCC socket SIMM. It's a bit taller now (about 1.5 inches). Any clearance problems in the SE/30 for instance?
Also there isn't a lot of room for much ground fill type stuff, especially near the sockets because I have so many traces going through them. Will that pose any problems?
There is not too much clearance inside the SE/30 since the motherboard sits in the basement of the case, so there is a chassis directly above where the ROM and RAM stand. I am guessing by eye the clearance is about 0.25" when looking at the gap between the stock SIMM and the chassis.
Your surface mount board looks great. Is it the completed design? Looks like moving the caps to the back opened up the design a little bit. As far as assembling I would try a paste stencil and a hot air gun or hot air solder rework station.
Your surface mount board looks great. Is it the completed design? Looks like moving the caps to the back opened up the design a little bit. As far as assembling I would try a paste stencil and a hot air gun or hot air solder rework station.
Do you know by any chance how tall the original SIMM is? Also, are there any clearance issues as far as how far things stick out from the SIMM? If we put through hole caps on it, that also becomes an issue.
Thanks! I think it is the completed design until I start making it USB programmable. Yeah, it definitely opened up space by putting the caps on the back. I'm designing a through hole version now. I'm thinking I might just order some surface mount boards now and then finish the through hole version after that. It's a learning experience for me! I like the solder paste/hot air idea too. I think I saw a YouTube video where someone put together a board with that combination and it looked really easy!
Thanks! I think it is the completed design until I start making it USB programmable. Yeah, it definitely opened up space by putting the caps on the back. I'm designing a through hole version now. I'm thinking I might just order some surface mount boards now and then finish the through hole version after that. It's a learning experience for me! I like the solder paste/hot air idea too. I think I saw a YouTube video where someone put together a board with that combination and it looked really easy!
The IIsi ROM measures 1.100" with my digital calipers.
Excellent! That's the same height that my example SIMM is, and it's also the height of my surface mount PCB layout. I'm still messing around with the through hole one, but I'm not sure if I will be able to get it down to 1.1 inches. So we'll probably have to do the surface mount one for the SE/30.
Piccies? :approve:
I don't have anything interesting to show pics of yet. The example SIMM I had was from a LaserWriter. I can take pics if I want, but it's probably not that helpful since it's the wrong pinout.
I have actually sent off my first batch of surface mount boards to Seeed Studio for manufacturing. I will put a design that olePigeon comes up with on the next round of boards. I figure that I'll find some major goofup with the first one anyway, so I didn't want to order a bunch of them yet. I'll keep everyone posted on the status of the order! Unfortunately I had to pick Registered Air Parcel so it'll probably take forever to get here...oh well.
We'll see how it goes, and I'll continue playing around with through hole mounting! I could post some pics of what I have so far for the through hole mounting, but it's not quite done yet.
I have actually sent off my first batch of surface mount boards to Seeed Studio for manufacturing. I will put a design that olePigeon comes up with on the next round of boards. I figure that I'll find some major goofup with the first one anyway, so I didn't want to order a bunch of them yet. I'll keep everyone posted on the status of the order! Unfortunately I had to pick Registered Air Parcel so it'll probably take forever to get here...oh well.
We'll see how it goes, and I'll continue playing around with through hole mounting! I could post some pics of what I have so far for the through hole mounting, but it's not quite done yet.
It was 17 calendar days from order to delivery, last time I got PCBs from Seeed. That was with the cheapest shipping option. I wrote a mini-review of their boards here: http://www.bigmessowires.com/2011/06/24/tiny-cpu-boards/
Oh nice! That's not bad at all, hopefully I'll see similar results. Thanks for linking to your review...interesting stuff!
Any suggestions for a logo before sending out board designs? Something piratey?
Keira Knightley? 
)
)
Does the ROM SIMM draw power? Enough to light up 2 tiny LEDs? I could make the classic skull & crossbones, screened over two tiny red LEDs for the eyes. 
Hahaha, that would be awesome. I don't know how much current the SIMM socket can supply (a hardware guy can answer that) but it would definitely feasible to add from a layout standpoint. I think we'd need resistors in series with them to limit current, right? I'm too lazy to look at parts and do calculations on necessary resistance and current draw right now
That skull and crossbones sounds like a cool idea!
Or you could do a zombie Keira Knightley with red LED eyes! LOL, just kidding.
Order update: the PCBs I ordered are now "In Production" and I got an email saying if they meet requirements they will be shipped in 4-6 working days.
That skull and crossbones sounds like a cool idea!
Or you could do a zombie Keira Knightley with red LED eyes! LOL, just kidding.
Order update: the PCBs I ordered are now "In Production" and I got an email saying if they meet requirements they will be shipped in 4-6 working days.
Preferably in that little top she wore to the nightclub in "Bend it Like Beckham"Keira Knightley?
It won't be very piratey. But rowrrrrr.
Maybe mix leather bra and war paint from KING ARTHUR with some Flintlock reloads (single shot "speedloaders") crossed pistols and some piratey short breeches! :approve:
Niiiice! Now I just have to figure out how to add it to the PCB. Unfortunately it looks like FreePCB doesn't allow me to import graphics to put on the silkscreen, but there are tools out there that will "simulate" it with a bunch of tiny text areas. Hopefully it turns out OK!
That's awesome!! I love the via in the skull!
I agree, that's really freaking cool! I think your "trace" design will be a lot easier for me to replicate. I know that better PCB design software can probably just import the EPS directly. I'll try to trace it as well as I can with the line segment stuff.
The footprint editor will let me make stuff like that with lines and curves, so I'll see what I can do.
BTW, here's my latest find, from a seller on Amazon when I got lucky and found it for like $20:
It was originally a library book at USF (South Florida or San Francisco, I guess!) until last year. Not in the greatest condition but considering how hard it is to find the book, I'll gladly take it!
The footprint editor will let me make stuff like that with lines and curves, so I'll see what I can do.
BTW, here's my latest find, from a seller on Amazon when I got lucky and found it for like $20:
It was originally a library book at USF (South Florida or San Francisco, I guess!) until last year. Not in the greatest condition but considering how hard it is to find the book, I'll gladly take it!
Can your program import EPS any other vector data?
Unfortunately, it can't. That's what I get for using this stuff. I can draw my own footprints inside the app, though. I know that sounds ridiculous, but it's true. No import function for it 
Congrats on getting your very own GttMFH2E, dougg3!
I'm getting a book in from the UK . . .
Author: Apple
Title: Mac Family Hardware Ref
Description: Softcover,ex-library, with usual stamps and markings, in good all round condition. Ships within 24 hours. pp., 1200grams, ISBN:0201192551
. . . it's slated to arrive on or before November 9th! :O
I get crap shipped in from freakin' CHINA within a couple of weeks! :
p.s. I love the small caliber VIA in the trace skull too!
p.p.s. how about making the teeth look more like edge card connectors?
I'm getting a book in from the UK . . .
Author: Apple
Title: Mac Family Hardware Ref
Description: Softcover,ex-library, with usual stamps and markings, in good all round condition. Ships within 24 hours. pp., 1200grams, ISBN:0201192551
. . . it's slated to arrive on or before November 9th! :O
I get crap shipped in from freakin' CHINA within a couple of weeks! :
p.s. I love the small caliber VIA in the trace skull too!
p.p.s. how about making the teeth look more like edge card connectors?
You can get GttMFH2E from amazon.ca for CDN $29.49: http://www.amazon.ca/Guide-Macintosh-Family-Hardware-Computer/dp/0201524058
Nice price! You should totally snag up a copy. What's interesting about that link is that Amazon.ca has it and Amazon.com does not have it, yet it ships from the United States. Some things just make no sense at all!
Haha jt, that's awesome! They must be sending it over on a rowboat or something?
Another one of those things that makes no sense!
Haha jt, that's awesome! They must be sending it over on a rowboat or something?
Another one of those things that makes no sense!
Ack! Amazon.ca won't ship computer-related items to a non-Canadian address. :-(
The seller is actually in the USA, but I can't find their direct web site or any other info outside of amazon.ca.
The seller is actually in the USA, but I can't find their direct web site or any other info outside of amazon.ca.
Hmm :-( That sucks.
Yeah I noticed it said it would ship from Washington, that's why I'm confused as to why Amazon.com doesn't have it listed on their site.
It looks like this seller might be the same one?
http://www.abebooks.com/great-buy-books-lakewood-wa-u.s.a/7759874/sf
Maybe it's possible to contact them through AbeBooks.com about it?
Also, the earlier edition is readily available from used sellers on Amazon, and it may have everything you're looking for....
Yeah I noticed it said it would ship from Washington, that's why I'm confused as to why Amazon.com doesn't have it listed on their site.
It looks like this seller might be the same one?
http://www.abebooks.com/great-buy-books-lakewood-wa-u.s.a/7759874/sf
Maybe it's possible to contact them through AbeBooks.com about it?
Also, the earlier edition is readily available from used sellers on Amazon, and it may have everything you're looking for....