The search returned 2 articles:

  1. January 2019: Project: ATtiny816 Breakout and Development Board with capacitive touch by Tim Blythman, PCBs: SC 24110181 [print issue] [online issue]
  2. January 2019: Project: ATtiny816 Breakout and Development Board with capacitive touch by Tim Blythman, PCBs: SC 24110181, 4 shop items [print issue] [online issue]