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Socket for the Netduino Mini?


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#1 Frode

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Posted 28 March 2014 - 07:38 PM

Hi, 

I'm looking for a 24-pin socket I can use on a PCB which will allow me to easily add/remove the Netduino Mini. Does anyone have any recommendations?



#2 Dr Who

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Posted 29 March 2014 - 01:05 AM

Hi, 

I'm looking for a 24-pin socket I can use on a PCB which will allow me to easily add/remove the Netduino Mini. Does anyone have any recommendations?

 

 

Hello!

You are going to need a ZIF (Zero Insertion Force) Socket. They are typically shown as being the thing used to hold a blank EPROM on a programmer.

 

Any good electronics supplier (Probably not Microcenter, but definitely Jameco, US companies) should have them.



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#3 Nevyn

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Posted 29 March 2014 - 05:14 AM

It depends upon a couple of things really, how often you want to remove the Mini and how much you are willing to spend.

 

If removal will be frequent then the ZIF socket is the best way to go but it has two disadvantages namely cost and size.  The advantage is that it is designed for frequent removal of chips.

 

For infrequent removal then a DIP socket should be adequate.  It has a lower profile than the ZIF socket and is a lot cheaper.  Downside, frequent removal is likely to lead to wear.

 

Regards,

Mark


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#4 Mario Vernari

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Posted 29 March 2014 - 06:32 AM

Both DrWho and Nevyn/Mark gave excellent suggestions.

I'd only add another solution, which I'd place -let's say- as an halfaway between the ZIFs and the common DIPs: it's a strip...female strip, but nothing related to girls.

Just consider the female headers used in the regular Netduino/Arduino. You may find easily those headers as standard-sized, or even in a 50-holes row, which can be cut to fit possibly any pin count. Their price is really affordable.

http://it.mouser.com...t strip&FS=True

 

The insertion force is higher than a ZIF (which comes with a complex mechanism), but this way allows you to insert/remove the Mini with ease and without being worried for harm it. Bear in mind that the classic DIP sockets are designed for DIP-packages, so hard-plastic bodies. If you use a plane-screwdriver to remove the chip there's no problem, but a Mini isn't robust as it.

 

So, it's up to you what's the best choice!


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#5 Frode

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Posted 29 March 2014 - 07:25 AM

Thanks for very informative answers!

 

The idea is that I want a way to easily take a Mini off a prototype PCB, so a low cost/few insertions solutions is fine.

 

What is the pin-spacing on the Mini? Will this 24-pin DIP work?



#6 Nevyn

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Posted 29 March 2014 - 08:52 AM

The idea is that I want a way to easily take a Mini off a prototype PCB, so a low cost/few insertions solutions is fine.

 

What is the pin-spacing on the Mini? Will this 24-pin DIP work?

 

The pins are 0.1" (2.54 mm) apart and the board is 0.6" wide.  Looks like the quoted part should do.

 

Regards,

Mark


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Blogging about Netduino, .NET, STM8S and STM32 and generally waffling on about life

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#7 Frode

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Posted 29 March 2014 - 05:00 PM

Thanks! I'll order it and try!

#8 Paul Newton

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Posted 30 March 2014 - 06:12 AM

One more solution is to use a pair of "turned pin" sockets.

(These are a bit more expensive, but have strong round pins rather than flat bendy ones.)

Since the pins and sockets are round, they can be stacked.

 

thumbnail_Ext-2700-051.2.jpg

 

The idea is to solder one socket down to the board, and put the Mini into the other socket.

When you insert or remove the Mini, you insert or remove both the mini and its socket.

If any damage occours, it will be to the mini's socket, not the mini itself.

The socket can always be replaced after any damage to the pins.

 

Paul

 

EDIT:

Just had an afterthought - I don't knw what shape the mini's pins are, they might not fit into the turned pin socket if they are too large.






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