What are some work-around approaches to the lack of 40 pin DIPs? Or is this th
ElectricAye
Posts: 4,561
So I wake up this morning and discover an asteroid has hit the earth and wiped out all inventories of the Propeller's 40 pin DIP version. What to do? I had just become comfortable with this notion of designing and assembling my own PCBs using the DIP and had left behind the world of kluging and wire-jumping protoboards everywhichway. But now what? Do I backslide into the gangly electrically noisy hellfire of kluging and wire-jumping protoboards everywhichway or do I try to move forward with those surface mount microbes? If surface mount is the answer, then what do I need to design into the PCB that is different? For example, do I need solder mask to make SMTs possible? Are there other components (bypass caps, etc.) that must be added on with the SMTs? Different solders? Extra voodoo to ascertain that Parallax isn't going to run out of smts, too?
I am not happy about this.
I am not happy about this.
Comments
Bidding starts at $20.00...
We could always resort to this..
www.warrantyvoid.us/tiki-index.php?page=Protoboard+Nano
There's plenty of Protoboards still around.
OBC
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New to the Propeller?
Visit the: The Propeller Pages @ Warranty Void.
It's a slight pita, but there are cheap 44 pin QFP -> DIP adapater boards out there ~$5 to ~$8.· This ebay example demonstrates how to solder the chip on the board.
That example is inline, but there are DIP versions available as well... you'll need a 10mm x 10mm .8mm pitch board.
Are they on eBay yet???
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Links to other interesting threads:
· Home of the MultiBladeProps: TriBladeProp, RamBlade, TwinBlade,·SixBlade, website
· Single Board Computer:·3 Propeller ICs·and a·TriBladeProp board (ZiCog Z80 Emulator)
· Prop Tools under Development or Completed (Index)
· Emulators: Micros eg Altair, and Terminals eg VT100 (Index) ZiCog (Z80), MoCog (6809)
· Search the Propeller forums (via Google)
My cruising website is: ·www.bluemagic.biz·· MultiBladeProp is: www.bluemagic.biz/cluso.htm
Just spilt tea into my KBD, imnterestimng typo's !
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Style and grace : Nil point
Thanks, Agent, that helps reduce my panic/depression level this morning.
I started typing up a smart-*** comment that began like this:
"My approach? Buy some more DIPs from Mouser or Digikey..."
And then I thought- I should make sure Mouser still had some, and order a few more while I was at it. They had hundreds when I received my order from them a week ago, which included two DIP Props. But... no! Gooseegg! DigiKey still had ~150 when I put that Mouser order in, and they're at zero too. Heck, they still had some stock at the end of last week- I have a tab with a DigiKey cart I forgot to finish paying for I left open on Friday, and the two DIP Props in there are shown as in-stock.
Heck, I even asked the folks at DigiKey if having them in my cart somehow reserved them. No such luck.
I wonder who bought up Mouser's remaining stock? Parallax? It hadn't been been doing down that quickly over the two week period I'd been watching them...
There are a few suppliers which still have some at the old $13 price. Stock is low, though.
How much more does it cost to produce the 40 DIP version ? there is a fair bit more plastic and metal in them. Is it the Fab factories not liking the old packages.
In this forum there seems to be far greater usage of them as the lend themselves to prototyping far better. Where as the QF will be better for the finished product ( whatever that is )
I only have three Props, all 40 Dip, I shall put 2 of them them away into static bags and await the time that the are an exorbitant second hand price.
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Style and grace : Nil point
Breathe into a paper bag! The new stock is only 2 1/2 months away, according to the product page. That's not exactly a glacial timescale and leaves plenty of time to build those clever Christmas gadgets that your loved ones will treasure for years to come!
-Phil
with a DIP40 as the prize. [noparse]:)[/noparse]
OBC
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New to the Propeller?
Visit the: The Propeller Pages @ Warranty Void.
If I only had access to the sm parts I'd have to ask one of the guys
to assist me in designing test boards for it as I have no idea how to
design a board and get it made by a circuit board place. Oh the guys would
do it for me but then I'd have to endure hearing things like "I have to design
this board for poor helpless Holly" grrrr
I can make a pretty decent looking test board with the dip prop and thru hole parts.
Just don't look at the back of the board though..what a mess!
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- Some mornings I wake up cranky.....but usually I just let him sleep in -
I would have kept quiet about having the entire USA stock. My two are fairly safe, There's a 3000 miles moat.
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Style and grace : Nil point
Post Edited (Agent420) : 8/18/2009 7:47:44 PM GMT
Jonathan
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lonesock
Piranha are people too.
You are hobbier
He/she is hobbiest
Naah --
But maybe you meant "hobbyist"?
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· -- Carl, nn5i@arrl.net
Most 8-bit PICs, and all the 16-bit and 32-bit devices, have on-chip debugging hardware that allows in-circuit debugging and programming via a six-pin interface. Similar facilities are provided by most other chip manufacturers.
Leon
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Amateur radio callsign: G1HSM
Suzuki SV1000S motorcycle
No more smt wire soldering for me.
You can all try this, its not easy, but it works.
Oh, and don't break a leg when doing this.
When I worked for a company making prototype 3-phase High voltage brushless AC motor control boards, along with the cpu board, most of the testing of new chips and designs were just hacked out.
We would design the new part into the design, check it, double check it, use the reference designs(usually in the datasheet) as a way to determine if we are doing it right.
Then we would just order the pcb's, populate it, and debug it. 95% of the time the designs worked exactly as they were designed.
Perhaps that says something about my skills but,, its really not a big deal to work with brand new parts. It helps to have a budget that can afford a few mistakes in the pcb (i.e. revisions)
Post Edited (Clock Loop) : 8/18/2009 11:34:42 PM GMT
[noparse]:)[/noparse])
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And its not that hard to learn either. I learned it on the job without guidance with just some soldering paste and a variable temp soldering iron. Wasn't up to NASA specs but it did the job.
Because keeping them in a safe for 2 1/2 months is different then not having them at all.
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Computers are microcontrolled.
Robots are microcontrolled.
I am microcontrolled.
But you·can·call me micro.
If it's not Parallax then don't even bother.
I have changed my avatar so that I will no longer be confused with others who use generic avatars (and I'm more of a Prop head then a BS2 nut, anyway)
Thank you, Carl! That's one of my (many) pet peeves.
Just for emphasis: the word is hobbyist, not hobbiest.
And it wasn't even microcontrolled's error this time.
-Phil
I try to get it right, most of the time, but as a nerdish young chap I played with electronics and didn't read all those books. The wonderful education system left us all equally thick and so I see myself as a typical engineer fantastically educated, by myself and real life, in narrow subjects.
I do not see the spelling mistakes until they are posted. I'll try to get most things right, or revert to TXT speak. How about an entire thread done in the "right first and last letters, padded to the correct lenth"
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Style and grace : Nil point
Geez some of you folks are uptight.
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And no, I do not text. (contrary to popular belief)
I now use FireFox which just saved me from spelling "contrary" wrong.
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Computers are microcontrolled.
Robots are microcontrolled.
I am microcontrolled.
But you·can·call me micro.
If it's not Parallax then don't even bother.
I have changed my avatar so that I will no longer be confused with others who use generic avatars (and I'm more of a Prop head then a BS2 nut, anyway)