[TriEmbed] Fwd: Is anyone here a JST Connector Wizard

[Scott Hall]

The trick I would use all these years is to crimp down one wing over the
insulation, then crimp the second wing over the first, then recrimp over
both to squeeze it up maintaining that overlap.

-sgh

On Wed, Jun 26, 2024, 7:36 PM Glen Smith via TriEmbed <triembed at triembed.org>
wrote:

> Apparently my photo made the message too large for the server, I think I
> removed it this time.
>
> ---------- Forwarded message ---------
> From: Glen Smith <mrglenasmith at gmail.com>
> Date: Wed, Jun 26, 2024, 6:16 PM
> Subject: Re: [TriEmbed] Is anyone here a JST Connector Wizard
> To: Rick DeNatale <rick.denatale at gmail.com>
> Cc: TriEmbed Discussion <triembed at triembed.org>
>
>
> I won't claim expert level, but after reading this write up:
> https://iotexpert.com/jst-connector-crimping-insanity/
> Buying the Engineer PA-09 crimper and some practice I got to the point
> where I was getting 70-80% success rate on JST-PH (I think) connectors
> during robot season.
>
> My new Voron printer uses PH connectors for some stepper motors and FRC
> motor encoders use them as well. I found that good tweezers, magnification
> and peace and quiet helped considerably. I ordered from DigiKey. I'd be
> happy to meet and show my technique if it would help.
>
> Glen
>
> On Wed, Jun 26, 2024, 5:37 PM Rick DeNatale via TriEmbed <
> triembed at triembed.org> wrote:
>
>> I’m convinced that these things are the invention of the devil!
>>
>> Despite my best efforts, I’d guess i have about a 20% yield crimping JST
>> terminals.
>>
>> I’ve bought several crimping tools.
>> https://www.amazon.com/gp/product/B01N4L8QMW/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
>>  and
>> https://www.amazon.com/gp/product/B078WNZ9FW/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 were
>> recommended by various YouTube videos.
>>
>> The second one works a bit better unlike the first it has you crimp the
>> electrical contact first and then the mechanical crimp around the
>> insulation.
>>
>> My big problem is that the insulation crimp often doesn’t form
>> correctly.  Instead of wrapping around the insulation the wings just stick
>> out straight.
>>
>> Then either the terminal comes off the wire while removing the “tape”
>> part, or when trying to to insert the terminal in the plastic shell.
>>
>> Is my problem with the terminals? I’ve been buying kits from Amazon.
>> Would i be better off with a different vendor like Digikey?
>>
>> Any advice gladly appreciated.
>>
>> ——
>> Rick DeNatale
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