On Tuesday while trying to stitch in my hardware to a sleeve, one of the wires broke off its soldering.  After trying to re-solder the wire to the sensor, the multi-core wires began to unwind and start wrapping around each other. So I decided to take apart everything, and re-wire / solder with single core wires. I finished this on Thursday, and got the device to function once again. I now need to but a finishing stitch down one side of the sleeve, and then continue to improve the code to reliably capture data in the gym.