jhfelectric
Posts: 6
Joined: Mon Sep 30, 2013 5:35 am

PCB Standoff

Mon May 09, 2016 10:31 am

Hello,
I have been searching all around the web for standoffs or pillars compatible with the (not) mounting holes of the raspberry pi board.
The hole diameter being 2.9 mm, a 3 mm standoff will not fit, and smaller diameters seem to be not available.
To avoid misunderstanding with the wording, I am looking for Self-Adhesive Locking PCB Standoffs, such as these: http://www.ebay.co.uk/itm/PCB-Circuit-B ... 1419571487 but of course, of the correct dimensions !

Any body had any luck ? What other solutions would I have (cannot use screws in my situation) ?
Thank you for any help !

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Burngate
Posts: 6151
Joined: Thu Sep 29, 2011 4:34 pm
Location: Berkshire UK Tralfamadore
Contact: Website

Re: PCB Standoff

Mon May 09, 2016 4:29 pm

It's interesting how difficult it can be to find stuff on some websites.
I've just spent ten minutes looking at R S and Maplins - surely they'll have them? - with no luck. They're willing to sell me a plastic box, or hex pillars, or 4mm standoffs that latch in both ends, but not what I'm looking for. It's their search routine that's failing - R S, at least, used to sell them, cos 20 years ago we bought them, using their paper catalogue.
At least with the paper catalogue you could riffle through to the right page in 30 seconds - with the internet, it takes that long to get to the first wrong page, repeat for each of the next 30 wrong pages, then give up.

Rant over, have you thought of using a scalpel to make those you have fit? It's worked for me, at the expense of bleeding thumbs.

fruit-uk
Posts: 609
Joined: Wed Aug 06, 2014 4:19 pm
Location: Suffolk, UK

Mon May 09, 2016 5:59 pm

Burngate wrote:At least with the paper catalogue you could riffle through to the right page in 30 seconds - with the internet, it takes that long to get to the first wrong page, repeat for each of the next 30 wrong pages, then give up.
Me too!

hippy
Posts: 6519
Joined: Fri Sep 09, 2011 10:34 pm
Location: UK

Re: PCB Standoff

Mon May 09, 2016 6:43 pm

jhfelectric wrote:The hole diameter being 2.9 mm, a 3 mm standoff will not fit
I haven't tried it with a Pi but, for PCB's I have had in the past where that's been a problem, I have used a circular file to enlarge the hole, filed the stand-off down, or done both.

fruit-uk
Posts: 609
Joined: Wed Aug 06, 2014 4:19 pm
Location: Suffolk, UK

Mon May 09, 2016 8:02 pm

I know you said you cannot use screws but what about drilling through one of the self adhesive pads, countersinking the back then using a nylon countersunk set screw and spacers - which are available in smaller diameters

masa-aud
Posts: 144
Joined: Fri Feb 26, 2016 9:20 am

Re: PCB Standoff

Mon May 09, 2016 11:51 pm

This stad [p-01864] fits for my Pi, which screw diameter max = 2.7mm
http://akizukidenshi.com/catalog/goods/ ... rch.x=true

masa

navzptc
Posts: 2
Joined: Sat Mar 19, 2016 12:44 am

Re: PCB Standoff

Tue May 10, 2016 12:16 am

Drill out the holes to 3mm - No problems found with the ones I have done :)

texy
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Re: PCB Standoff

Tue May 10, 2016 9:20 am

navzptc wrote:Drill out the holes to 3mm - No problems found with the ones I have done :)

+1

Texy
Various male/female 40- and 26-way GPIO header for sale here ( IDEAL FOR YOUR PiZero ):
https://www.raspberrypi.org/forums/viewtopic.php?f=93&t=147682#p971555

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