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Single Status Update
DIY Wireless TrackClip Pro
Haven't had time to spend on this project for awhile.... Been trying to find batteries that will power these 3 LED's, and previous tests required at least 4x 1.5V AAA Batteries which is way too large for a battery pack that will sit velcro'd to my headphones.
I just found some rechargeable Lithium Ion batteries with 3.7 Volts each in a "AAA" form-factor. These things are great! I tried running a single battery, but the LED's didn't illuminate in any noticeable way so I had to wire a second battery in serial, and they light up just fine. They are 350mAh each, which is less than half the capacity of a standard rechargeable Li-ion AAA battery, but the trade-off for a higher voltage in such a small size is exactly what I need for this project.
I left this thing plugged in overnight and it was off in the morning, I guess I'll time it to see how long it lasts. Next step will be to rig a recharging circuit with a micro-A USB female plug-in for easy re-charging, and then cram it all in a small black box with a velcro strap to easily attach to my headset. To start, I'm not going to cut the TrackClip Pro wire, and I'll leave the female USB connector shown below on the battery pack. I may shorten the TrackClip wire near the end of this project, at least to remove the heavy USB pass-through dongle hanging off it.
We'll see where this goes, I've never done anything like this before so it's a small challenge.