You can find all the RuuviTag hardware design files and related documentation from this repository.
- Rev.A1 is a fully functional device (see ruuvitag_reva1_errata.txt).
- Rev.A2 has some minor modifications, which are listed in the schematic sheet.
- Rev.B1 is a completely new design. Radio SoC is Nordic Semiconductor's nRF52.
We're using free and open KiCad: http://www.kicad-pcb.org/
All the design files are licensed using Attribution-ShareAlike 4.0 International (CC BY-SA 4.0). Copyright: Lauri Jämsä, Ruuvi Innovations Ltd. Neither the name of the RuuviTag nor the names of its contributors may be used to endorse or promote products derived from this project without specific prior written permission. While unofficial products should not have "Ruuvi" in their name, it's okay to describe your product in relation to the Ruuvi projects. For more info, drop us a line: license@ruuvi.com.
If interested of what we're doing and would like to join, our Slack team is the best place to start: http://ruuvi.com/blog/ruuvi-slack-com.html
Cheers! :P