Horray! Now that the Teensy issues are solved I have been making super progress!

• The Accelerometer is working. I have it configured as a tap detector. I had to modify some libraries :( which will make code reuse a little pain, but it works!
• The microphone is working better than I expected. Actually, it is so sensitive, it is easy to overdrive it just by yelling while the badge is on your chest. Here's a screenshot of me humming a tone, while looking forward with the badge on my chest.