26way female socket


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by simplesi » Sun Feb 24, 2013 12:41 am
Has anyone got a good (e.g cheap) source for a 26 way female PCB socket.

I'm talking about one that;s used on things like the pico board http://www.piborg.org/picoborg
and not a ribbon cable type one.

Regards
Simon
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by techpaul » Sun Feb 24, 2013 9:30 pm
simplesi wrote:Has anyone got a good (e.g cheap) source for a 26 way female PCB socket.
One thing I really hate is when someone says they want something that is "cheap", which is no use without a target price or what you want to be cheaper than.

Most distributors Farnell.RS/CPC/Rapid/Arroiw and many others have hundreds of similar parts

I personally use the 3M 8526-4500PL

http://uk.farnell.com/3m/8526-4500pl/socket-pcb-26way-2row/dp/9138650?Ntt=8526-4500PL

Cheaper from CPC

http://cpc.farnell.com/3m/8526-4500pl/s ... tt=CN12879

They also have plenty of PCB data connectors on 2.54mm or 0.1 inch pitch double row, like the one on that board.

I suggest you have a look for what you want as also just going for cheapest may also find a connector that falls apart at a moments notice or has other problems.

There is cheap and cheap within specifications for usage requirements
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by Grumpy Mike » Sun Feb 24, 2013 9:51 pm
It depends on how many you want to buy.
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by simplesi » Sun Feb 24, 2013 10:04 pm
:lol:
Oh, I've missed our little disucssions so much :)

Let me explain....

A few suppliers are now selling little add-on PCB boards for about £5 which is a lot "cheaper" than the original £10 ones.

But for a "cheap" project even £5 isn't "cheap" enough so me and a mate of mine thought is we could get hold of a "cheap" 26 way connector, then we could solder it to a "cheap" piece of veroboard clone and make "very cheap" expansion boards :)

My basic Robot controller consists of 1xULN2003 connected to the RPi by 3 wires and to battery and 2 motors.

Now at the moment, the "cheapest" way I get this connected is via a breadboard and some jumper wires - but this costs about £2 at the moment (because I'm using upmarket breadboards!) but the main problem is anchoring it to an uncased RPi (Because who'd want to waste money on a case!)

But, if I could get hold of a "cheap" 26 way connector then I could manufacture these for a total cost of say 99p and that would be "cheap"

And I could make other things as Traffic Light LED arrays or an electronic die

And they could just plug into my RPi :)

So in answer to the question - "cheap" would be <50p if possible.

Thanks for the links BTW :)

regards

Simon
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by simplesi » Sun Feb 24, 2013 10:09 pm
@grumpymike
Our posts crossed at same time.

I'd prob fork out for 10 to start with :)

Simon
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by techpaul » Sun Feb 24, 2013 10:10 pm
Buy them in 1000 off qty or more then you can get that sort of price.

Look at making PCBs in large panels and different connectors, do a LOT of research on suitable connectors on a LOT of sites, and even look at stackable connectors to make a 26 way connector.

50p target is only really possible in large quantities.
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by simplesi » Sun Feb 24, 2013 10:33 pm
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by simplesi » Sun Feb 24, 2013 11:11 pm
Now we are talking turkey :)

How low can we go :)

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by neilf » Sun Feb 24, 2013 11:12 pm
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by simplesi » Sun Feb 24, 2013 11:13 pm
Now we are cooking on gas :)

Simon
PS Feedback rating not fantastic though :)
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by aTao » Sun Feb 24, 2013 11:28 pm
simplesi wrote:PS Feedback rating not fantastic though :)


Smiles cost extra
>)))'><'(((<
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by poing » Sun Feb 24, 2013 11:50 pm
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by joan » Sun Feb 24, 2013 11:54 pm
Lost track of the best buy.

I'd buy single row headers and place them side by side.

http://www.ebay.co.uk/itm/5-pcs-Single- ... 1157387094

10 to 15 13-pin headers (how good are your snaps) to give 5 to 7 headers for £1.72 (P&P included).
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by poing » Mon Feb 25, 2013 12:00 am
Why not use these: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=330863957616

They fit exactly over a pin header on the Pi and when you cut them in half you can solder the cut off end to any board you like.

Let's see: you get 40 wires, cut them in half so that makes 80, then divide by three (quantity for one product) so you can make 26 products (with two wires to spare for emergencies).

The wires cost $2.84, divided by 26 makes $0.11 per board. I don't know how many 'p' that is, but probably less :D
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by joan » Mon Feb 25, 2013 12:25 am
joan wrote:Lost track of the best buy.

I'd buy single row headers and place them side by side.

http://www.ebay.co.uk/itm/5-pcs-Single- ... 1157387094

10 to 15 13-pin headers (how good are your snaps) to give 5 to 7 headers for £1.72 (P&P included).

Better value

http://www.ebay.co.uk/itm/40Pin-40-pin- ... 0762027956
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by simplesi » Mon Feb 25, 2013 6:27 am
The ribbon cable idea doesn't meet the spec I'm afraid :)

And I realise you can get anything cheap if prepared to await the slow boat from China :)

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by simplesi » Mon Feb 25, 2013 10:59 am
Smiles cost extra


You've changed the link!

Right angle is not in spec either :)

Simon
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by joan » Mon Feb 25, 2013 11:12 am
By the way, the slow boat to China is now air freight. My stuff typically has taken less than 14 days (order to receipt). Depends on when the carrier has space on the plane.
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by RaTTuS » Mon Feb 25, 2013 11:23 am
http://www.catb.org/esr/faqs/smart-questions.html <- ask smart Questions
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by simplesi » Mon Feb 25, 2013 12:33 pm
@rattus
Its no good being cheap but not having stock :)

Simon
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by texy » Tue Feb 26, 2013 1:55 pm
How about these :
http://www.ebay.co.uk/itm/140827538807

OK, they are in Thailand, but the price is good - 18pence each including postage, for 20 off.

Texy
"2.8inch TFT LCD + Touch screen" add-on boards for sale here :
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by simplesi » Tue Feb 26, 2013 5:24 pm
Price is excellent :)

Delivery time - not so good :( - not even 1 month - just a whenever :)

Last time I ordered something on those terms was back in November and still waiting for them to be delivered ! :)

Simon
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by joan » Tue Feb 26, 2013 5:39 pm
simplesi wrote:Price is excellent :)

Delivery time - not so good :( - not even 1 month - just a whenever :)

Last time I ordered something on those terms was back in November and still waiting for them to be delivered ! :)

Simon

Go for it! The price is excellent.

I've only failed to receive 1 (ONE) package from Asia (value £3.16). The eBay seller returned my money without quibble once I complained. The other items from that order arrived OK.
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by toxibunny » Wed Feb 27, 2013 7:30 am
I ordered those thaishop ones on the 13th, and they arrived a couple of days ago. Seem reasonable enough quality, too, though I haven't used them yet...
note: I may or may not know what I'm talking about...
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by texy » Wed Feb 27, 2013 7:49 am
toxibunny wrote:I ordered those thaishop ones on the 13th, and they arrived a couple of days ago. Seem reasonable enough quality, too, though I haven't used them yet...


I also have an order on the way from thaishop - could you please measure the height of the body for me?
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