Crimping JST PH Connectors (Shallow Thoughts)

Crimping JST PH Connectors

(With a cheap imperfect tool)

I've written about the several neat boards I recently ordered from Adafruit.

But when I ordered, I was confused about which connectors were which, and didn't end up ordering all the connectors I needed.

Adafruit calls the connectors they use "Stemma", and (I realized too late) they have a helpful page called What is Stemma? explaining the different connectors. I had ordered several of the small ones, "Stemma QT", more technically a 4 Pin JST SH, which were perfect for connecting a Feather board to a CO2 meter. But I hadn't realized that the bigger board, the PyPortal, needs a larger connector also called Stemma, more technically a JST PH.

It turned out to be hard to find JST PH connectors with wires already attached ("pigtails") and what I found were impressively expensive in lots of two or three. I imagine I might want a fair number of JST PH, especially the 2-connector type used for batteries. So I ordered a boxed assortment of 2, 3 and 4-pin JST PH connectors and a crimp tool.

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Tags: hardware, maker, electronics
[ 13:34 Dec 14, 2025    More hardware | permalink to this entry | ]