At risk of starting a religious war, what sort of headers have you soldered to your Wixel?
Top or bottom? Male or female?
To start us out, I used an 8-pin stackable (Arduino) header to connect to the 8 GPIO pins on each side, with regular male pins for the other pins. IMO, This gives me a breadboard-friendly and jumper-friendly setup.
Just as a heads up, if we add Wixel sockets to future products, they will be designed to work with the assembled Wixels we sell (see David’s post above).
Here’s what my assembled one looks like with the passthru headers:
If I had more passthru headers, I probably would have done all 23 pins in them, now that I’m starting to feel the need for VCC and GND connections too.