subdermal temperature sensor - short term
so I've been stalking this forum for a couple months now but haven't made an account until now, figured it was time to interact with you.
An idea has been floating around my head for a while, and I started to flesh it out just recently. Wanted some constructive criticism or just a 'that won't work', either is cool.
So high blood pressure runs in my family, and I was envisioning a subdermal device that sits on your lower forearm and just logs data, transmitting over Bluetooth LE for alerts (VERY similar to the circada, but ideally a good bit smaller). I'm not planning on actually implanting it anytime soon, just running prototypes (although if anyone knows of an implanter in the Pittsburgh area, please let me know). Due to the difficulty in actually measuring blood pressure, as a proof of concept i'd just like a temp sensor, reasonably accurate, to work over the course of a couple of weeks/ a month.
My vestigial parts list so far is:
ATtiny85 - possibly with a breakout board like the Trinket
an ultrathin 45 mAh battery (3*11*16) or similar
a temperature sensor (along the lines of the Sparkfun TMP36
Qi compliant wireless charging reciever, maybe like the one on DFrobot, or TI's interpretation (25.0 * 15.6 * 1.0 mm and 1mm radially respectivly)
an LED, just for basic interfacing.
The goal here is to just create a proof of concept, and maybe display it in my biomedical engineering class.
If anyone has suggestions, comments, gaping holes in my plan, please let me know
*// I'll discuss power issues and coatings in a later post //*