Hello!
Update! I first tested the Red Button on Qwiic on the Redboard Edge. And it worked perfectly. I have since tried the same first example, and all except the two button one, on a regular Redboard, this one rode in my Tinker Kit, which was bought from Micro Center some months ago.
I have just completed testing the whole thing all over again on a (too long) discontinued Mintronics Menta. That’s the Arduino supported system inside an Altoids style tin, originally introduced by Adafruit, and cross-pollinated over to Maker Shed.
I can just hear the Moderator asking “Why?”, well at the bottom of the page, https://www.sparkfun.com/qwiic above the FAQ , it offers suggestions on how to use the system on certain boards. But it failed to mention what to do for fast work. Such as what I did, I simply used the Breadboard connector (male) to connect to power (GND Black, and 3v3 Red), and (Blue SDA, Yellow SCL) to connect to matching places on the boards. Admittedly I needed to look up the places for the signals on the Menta who matches the signal lines on the Arduino Duemilanove who it follows as a programming model. Both boards support full shields, as does Red there, so I’ll probably assemble the Arduino to Qwiic one I have for the purposes of making this easier.