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(@witchdoc59)
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Joined: 1 year ago
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I'm looking for a certain connector.  The connector to left of the photo is the one I'm looking for.  It is about 8mm in width.  The other 3 are ones that I've purchased recently.  The second from the left is 7mm in width, the 3rd is about 12mm and the fifth is about 15mm.   How are these things measured?

  Any thoughts, comments or suggestions would be greatly appreciated.

20231103 164136

   
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(@witchdoc59)
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This might be a more useful photo of the one I'm looking for.

20231103 174137

   
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(@davee)
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Hi @witchdoc59 ,

   I am not sure, but they look a bit like 1.25 mm JST

This picture came from https://www.aliexpress.com/item/1005004647950193.html

image

There are lots of suppliers on AliExpress ... and I think you will find the connectors without wires attached as well, but bear in mind, they are quite small, so will probably be fussy about the crimping tool.

As I say, use your own judgement as to whether they are the same.

Good luck and best wishes, Dave


   
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Ron
 Ron
(@zander)
Father of a miniature Wookie
Joined: 3 years ago
Posts: 6865
 

@witchdoc59 They appear to be JST connectors. Here are a couple of amazon.ca links, if elsewhere just change the .ca to whatever.

https://amz.run/7HK0

and pre-crimped https://amz.run/7HK1

and the special crimpers are https://amz.run/7HK2

 

First computer 1959. Retired from my own computer company 2004.
Hardware - Expert in 1401, and 360, fairly knowledge in PC plus numerous MPU's and MCU's
Major Languages - Machine language, 360 Macro Assembler, Intel Assembler, PL/I and PL1, Pascal, Basic, C plus numerous job control and scripting languages.
Sure you can learn to be a programmer, it will take the same amount of time for me to learn to be a Doctor.


   
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Inst-Tech
(@inst-tech)
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Posts: 554
 

@witchdoc59 I found this site that may help you with finding the right connector your looking for: https://www.mattmillman.com/info/crimpconnectors/common-jst-connector-types/

It has a lot of information about sizies, types, and crimping tools used for those type of connectors.

regards,

LouisR

LouisR


   
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Ron
 Ron
(@zander)
Father of a miniature Wookie
Joined: 3 years ago
Posts: 6865
 

@inst-tech FANTASTIC resource. I think this should go in your future video Bill (@dronebot-workshop)

First computer 1959. Retired from my own computer company 2004.
Hardware - Expert in 1401, and 360, fairly knowledge in PC plus numerous MPU's and MCU's
Major Languages - Machine language, 360 Macro Assembler, Intel Assembler, PL/I and PL1, Pascal, Basic, C plus numerous job control and scripting languages.
Sure you can learn to be a programmer, it will take the same amount of time for me to learn to be a Doctor.


   
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Ron
 Ron
(@zander)
Father of a miniature Wookie
Joined: 3 years ago
Posts: 6865
 

@witchdoc59 All the connectors you have shown are in the JST family. You then need to determine the specific version/model which will be PH or XH, then the number of pins. The PH are 2.0mm pitch and the XH are 2.54mm pitch.

Given that breadboard and many PCB type boards with sensors etc are 0.1" then the 2.54mm pitch JST connectors are frequently used. I have a box of both PH and XH with 2pin to 6 pin make and female.

Available for quick delivery from Amazon and for low price from AliExpress (be sure to read carefully as the web site can be confusing) 

First computer 1959. Retired from my own computer company 2004.
Hardware - Expert in 1401, and 360, fairly knowledge in PC plus numerous MPU's and MCU's
Major Languages - Machine language, 360 Macro Assembler, Intel Assembler, PL/I and PL1, Pascal, Basic, C plus numerous job control and scripting languages.
Sure you can learn to be a programmer, it will take the same amount of time for me to learn to be a Doctor.


   
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(@davee)
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Joined: 3 years ago
Posts: 1644
 

Hi @witchdoc59,

  I don't have any of the crimping tools mentioned above, but before you splash out your cash, I suggest you make sure any crimping tools you choose will cover the particular connector insert you want to use.

I don't completely trust my judgement of your photo, but my best guess is that it is 1.25mm pitch.

IF my guess is correct, then using @inst-tech's very handy reference, it looks like the GH family of JST's connectors.

(GH (1.25mm pitch))

I can't see that size listed on the IWISS IWS-3220M crimper adverts, leading me to suspect, they are not the correct ones for that size.

Personally, I would start with buying a small bunch of pre-crimped wires. That way, you can check they are the right size, etc., hopefully for a only a small outlay. Track down the proper tool if you need to later. I have a suspicision it will be (much?) more expensive than the IWS-3220M, (to get one that works reliably) but I don't know.

Best wishes, and good luck, Dave


   
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Ron
 Ron
(@zander)
Father of a miniature Wookie
Joined: 3 years ago
Posts: 6865
 

@davee witchdoc59 I think there are two uses of mm. In the ali picture it says 1.25 BUT not pitch, and mentions PH, XH, SM which are 2mm, 2.5mm and 2.5mm. For reference, I include a link to a box of 'standard' 0.1" or 2.54mm pitch for use in breadboard and pcb's for arduinos, ESP32's, ESP8266, and countless sensor boards.  https://amz.run/7HY3 Also a picture of a google result. Note the web page @inst-tech posted says 2.5mm but it should be 2.54mm.

Screenshot 2023 11 04 at 22.09.05

First computer 1959. Retired from my own computer company 2004.
Hardware - Expert in 1401, and 360, fairly knowledge in PC plus numerous MPU's and MCU's
Major Languages - Machine language, 360 Macro Assembler, Intel Assembler, PL/I and PL1, Pascal, Basic, C plus numerous job control and scripting languages.
Sure you can learn to be a programmer, it will take the same amount of time for me to learn to be a Doctor.


   
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(@davee)
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Posts: 1644
 

Hi Ron @zander,

  I agree there is the possibility of confusion between pitch and the a physical size of the metal part of the connector, presumably based on the diameter.

 

But the photo @@witchdoc59  posted on top of ruler clearly shows the pitch between the connectors is a little  over 1mm. with 1.25mm being a plausible estimate, though the photo is not good enough to be sure to 0.1mm  accuracy ... but I don't think it could possibly be 2, 2.5 or 2.54mm. So I think witchdoc59 needs to look for 1.25mm, or a pitch size close to that figure.

Hence my concern that tools that explicitly specify compatibility with 2.54 mm pitch connectors, but not 1.25mm, may not be suitable.

---------

So far as I have seen, the JST ranges all use pitch, but other ranges may be more variable in their specification method. A few of the adverts on AliExpress have diagramatic pictures showing the pitch dimension of 1.25mm, but they tend to be the ones with a 'magnifying glass' type of display, which can be very difficult to do a screen capture.

e.g.this supplier does it for 1.0mm connectors https://www.aliexpress.com/item/1005005757804816.html

So finding the correct tools or wires, is problematic, though the few dollars/pounds price of a small pack of premade cables that were the wrong size would concern me less than $40-$50 (or maybe much more) for a tool that doesn't cover the required size (albeit Amazon might accept a return).

As another example, this supply does use the word Pitch

https://www.aliexpress.com/item/1005006135792829.html

image

This shows pitch of 1.0mm, 1.25mm & 1.5mm are all possibilities, as well as the larger values. In general 2.54 mm is too large for most portable consumer goods (moble phones, PCs, etc) now, hence lots of smaller options.

Although @inst-tech's reference mentioned GH for the 1.25mm pitch version, many adverts just seem to say 1.25mm JST, without a two letter code. I don't know why.

I am sorry, but matching up with an unidentified connector is a bit of a lottery, so all I can do is point out some possibilities to investigate further, but it is tricky to be 100% sure of matching when only comparing photos, etc

Best wishes, Dave


   
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(@witchdoc59)
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Joined: 1 year ago
Posts: 21
Topic starter  

Thanks everyone for all the comments and suggestions.  I've ordered some 1.25 from Amazon and I'll study that website closer.  The connector is for a Beitien 880 GPS module.


   
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Ron
 Ron
(@zander)
Father of a miniature Wookie
Joined: 3 years ago
Posts: 6865
 

@witchdoc59 Let us know! I can't find my GPS modules, but they are a different brand, and I don't recall them having a JST connector so I can't try.

First computer 1959. Retired from my own computer company 2004.
Hardware - Expert in 1401, and 360, fairly knowledge in PC plus numerous MPU's and MCU's
Major Languages - Machine language, 360 Macro Assembler, Intel Assembler, PL/I and PL1, Pascal, Basic, C plus numerous job control and scripting languages.
Sure you can learn to be a programmer, it will take the same amount of time for me to learn to be a Doctor.


   
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Ron
 Ron
(@zander)
Father of a miniature Wookie
Joined: 3 years ago
Posts: 6865
 

@davee @witchdoc59 Plastic, not metal. Yes, I agree the connector pictured has six pins and, therefore, 1.25mm pitch. I have enclosed a 2.54mm std pitch for comparison as long as 15mm / 6 is still 2.5 everywhere. I both love and hate the JST connector. I love their small size, but hate crimping them. I have purchased about eight or more crimpers in total, albeit some were for solar, some for electrical, but the majority for various electronics parts. I tried to give some away here on the forum for FREE, but no takers, so the extra went in the bin. 

JST connectors have 2 (TWO) key attributes: the pitch of the pins and the shape, which are the letters as in the link @inst-tech posted. I only stock XH, SM, and RCY all in 2.54 pitch, but I think I will add a box of XA and EH thanks to the chart.

The only parts I can think of that are NOT 2.54 are the LORA radios, but I have an order outstanding with DigiKey for the FlexyPin adapter, so I don't have to deal with a second pitch. Here is the DigiKey link if you are interested DigiKeyLink.

Just for general education and info purposes, I am including a few pictures of 2.54mm pitch components. It's probably overkill, but I have nothing better to do (NOT true)

I am also including pictures of the two crimpers I have kept; one is the fancy split jaw type, and the other is 100% manual. I have better luck with the manual, but if I were doing enough of this, the split jaw would eventually be the better choice.

While we are talking about connectors, let me show you my favourite, which is called ferrule or shoelace connectors, which has the most foolproof crimper. They are the last 4 pics.

BTW, it took me a while to figure this out so profit by my error. The very tip of the female JST connector pins are pre-formed, do NOT try to crimp them, only the back end with two tabs need crimping, one on the insulation and one on the wire.

IMG 7996
IMG 7985
IMG 7988
IMG 7989
IMG 7987
IMG 7986
IMG 7990
IMG 7991
IMG 7992
IMG 7993
IMG 7994
IMG 7998
IMG 7997
IMG 7999

First computer 1959. Retired from my own computer company 2004.
Hardware - Expert in 1401, and 360, fairly knowledge in PC plus numerous MPU's and MCU's
Major Languages - Machine language, 360 Macro Assembler, Intel Assembler, PL/I and PL1, Pascal, Basic, C plus numerous job control and scripting languages.
Sure you can learn to be a programmer, it will take the same amount of time for me to learn to be a Doctor.


   
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Inst-Tech
(@inst-tech)
Member
Joined: 2 years ago
Posts: 554
 

Posted by: @witchdoc59

Thanks everyone for all the comments and suggestions.  I've ordered some 1.25 from Amazon and I'll study that website closer.  The connector is for a Beitien 880 GPS module.

@zander, @davee, after reviewing @witchdoc59 post ( above) the module is a Beitien 880 GPS, so the data sheet shows that the connector is a 1.25 mm JST ..see data sheet:

https://images-na.ssl-images-amazon.com/images/I/81xnOf7jqyL.pdf

hope this helps..

regards,

LouisR

 

LouisR


   
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(@witchdoc59)
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Posts: 21
Topic starter  

@inst-tech Wow, that's the best datasheet I've seen for this module.  Thanks.


   
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