Source code and PCB design files for an NFC-enabled sweat sensor. Published as part of "Stretchable and biodegradable batteries with high energy and power density".
The board has been designed in KiCad. You can use it to generate your own Gerbers.
Here's a shortened BOM:
- MCU: ATtiny85V
- NFC tag: ST25DV64K
Two build systems can be used:
- PlatformIO
- Traditional Makefile using standard toolchain (avr-gcc, avrdude)
I recommend an SOIC-8 clip for flashing.