Bluetooth enabled multifrequency bioimpedance spectrometer for hydration monitoring.
I finally had a chance to assemble this PCB. Alas, I ordered an SO8 package for a part accidentally and had to stick it on a daughterboard. Will replace with the right part. Designed to scan complex bioimpedance from 1k-100kHz and communicate with a handheld tablet over bluetooth. I’ve moved away from the CSR ICs to using these packages as the BlueCore 3 that we were using became more expensive than these modules, and the modules are a lot simpler to solder. I’m planning on moving to the BlueCore5 for future designs – can get power consumption down to <10mA (if you believe the datasheet) at 115kbps.