Background:
I just learned the hard way that the pin 1 indicator on Pololu’s Crimp Connector Housings is only valid when male terminals are used. When using female terminals, the marker arrow indicates pin 2. I now have to redo the wiring in four housings
In the product page, please include a warning in big red bold font something like this:
Note: the arrow symbol molded into the double row crimp housings indicates the standard pin 1 location ONLY when using male terminals. When using female terminals, the arrow indicates the location of pin 2.
Note that this was brought up in a forum message in 2012:
Thank you for your suggestion; I have passed on your concern. However, please note that the male and female pins are interchangeable, so there is no reason why the pin 1 location on the housing cannot be populated by a female connector.
The issue you are describing is independent of the gender of the connectors and specific to the way you are using the connector housings. Essentially, when you plug two identical 2-row connectors into each other, the pin 1 locations on them will not match-up with each other.
When you plug a traditional* receptacle into a traditional header, the pin 1 indicators on each connector DO line up. So when you’re using these crimp connector housings, you have to pay a little extra attention and keep in mind that the arrows won’t line up with each other. It’s also helpful to know that these crimp housings are marked as if they’re the traditional header side of the pair, not the receptacle side.
*By “traditional” I mean a typical catalog item from any well-known connector manufacturer.
My post wasn’t intended to be a criticism, rather a suggestion to help your customers achieve a successful result the first time.
