1mm Headers

pdubinsky · Post by **pdubinsky** » 08 February 2011, 9:51 AM

Has anyone had any experience using 1mm headers? I just got a Wiznet WIZ610wi serial to wireless board and it uses a dbl row 1mm header. I've found bare connectors at Digikey and Mouser but what I'm looking for are prewired connectors so that I don't have to crimp and insert the connectors. I make plenty of connectors but I don't really want to work with these little guys. They're really tiny.

Any suggestions would be *greatly* appreciated.

TIA,
Paul

dlh · Post by **dlh** » 08 February 2011, 10:40 AM

I'm confused. My WIZ610wi has 1.27mm headers. Mine is an early version that has the 36 pin (2x18) header but not the 20 pin (2x10) header added to the current version. Is the latter just for support?

Anyway, I just bought a standard 1.27mm female header and plugged the board into it. I did have to buy a longer socket (50 pin) and cut it down. 1.27 male and female (i.e. socket) headers are fairly easy to find - both through-hole and SMD - although usually not in the length desired (but easily cut). The only problem I had was with the Chinese PCB supplier I had been using - the 1.27mm spaced holes were at the limit of their capabilities but I've since had several boards made with even closer spaced holes by another Chinese PCB supplier.

What are you trying to do? Adapt it to a breadboard?

dlh · Post by **dlh** » 08 February 2011, 21:00 PM

ConnectOne's MINI SOCKET iWiFi (available from Mouser) uses a 2x6x0.100" header. It might be easier to work with and has a complete set of protocols.

Also, this company has a lot of prototyping adapters that might be useful.

http://www.proto-advantage.com/store/

stevech · Post by **stevech** » 09 February 2011, 18:55 PM

I've used Connect One's firmware. It's great. Study their downloadable manual. It's a bit much to understand at once, but for what it does, it's very good.

pdubinsky · Post by **pdubinsky** » 10 February 2011, 13:18 PM

I've used Wiznet's serial to ethernet boards and like them (they're inexpensive) so I ended up with one of their serial to wifi boards. The only problem I have with them is that their drawings are simply their construction drawings that lack simple things like the header pitch! I tried to measure the pitch but that is easier said than done at this scale. The header could be 1mm or it could be 1.27mm (.05).

I ordered some smt sockets for both 1mm and 1.27mm. The plan is to go from the board's header to a pig tail and then to an existing ZX24 installation.

When I get this toy going, I'll report back.

Thanks to all for the suggestions,
Paul

dlh · Post by **dlh** » 10 February 2011, 13:31 PM

Page 40 of the WIZ610wi user manual has all the needed dimensions including pitch of the connectors.

Post by **dkinzer** » 10 February 2011, 14:57 PM

pdubinsky wrote:I tried to measure the pitch but that is easier said than done at this scale.

With fine pitches such as this it is easier to measure the distance spanned by several elements (e.g. 9, 10 or more) and then compute the pitch of a single element. It also helps if you can measure from a distinct part of an element, e.g. the left edge of the first to the left edge of the Nth and then dividing by (N-1), rather than eyeballing the centers.

pdubinsky · Post by **pdubinsky** » 10 February 2011, 16:00 PM

Dave,

I've looked all over page 40 and I can't discern the pitch for the headers. (Actually, that was the first place I looked before I posted to the forum.)

Paul

dlh · Post by **dlh** » 10 February 2011, 16:15 PM

pdubinsky wrote:I've looked all over page 40 and I can't discern the pitch for the headers.

Maybe we are looking at different versions of the manual. I have 1.9.1 which, I think, is the latest. Also, I'm going by the printed page numbers at the bottom of the pages not the count in the Acrobat toolbar which includes the TOC, etc.

Anyway, I've captured an image of the page and attached it.

pdubinsky · Post by **pdubinsky** » 10 February 2011, 17:13 PM

That's the difference. My manual version is 1.7 and here's the clip. Note the lack of pitch info vs the 1.9 version.

Thx,
Paul

stevech · Post by **stevech** » 10 February 2011, 21:49 PM

similar story: the Wiz 811 vs. 812 changed the pitch so that the latter is 0.1 inch.

dlh · Post by **dlh** » 11 February 2011, 4:58 AM

stevech wrote:similar story: the Wiz 811 vs. 812 changed the pitch so that the latter is 0.1 inch.

In this case the pitch did not change, only the documentation (plus an added header). And the documentation change was very recent (1/25/11) - see page 2. I had measured the pitch on my WIX610wi which was a very early version.

I find it's a good habit to check for the most recent documentation whenever I encounter a problem.

stevech · Post by **stevech** » 11 February 2011, 8:24 AM

I've probably gotten the numbers wrong; it may have been the Wiz810 that had the 2mm spacing whereas the 812 (and 811?) had 2.54mm (0.1in). If I recall correctly.