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

[Glen Smith]

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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