• FONA Schematic
• FONA Feather Schematic for Adafruit Fona Feather (for battery charger, etc)
• Datasheet - LiPo battery manager
• SIM800 data from Adafruit
• CFAL1202A 12x2 OLED display module
• Possible box: Hammond RL6215
• MTS ARU - Documentation for an antique system for interacting with a computer by phone
• Talkie library for Arduino
• Similar projects:
  • http://jaromir.xf.cz/phone/phone1.html
  • https://hackaday.com/2014/06/16/the-rotary-cell-phone/

-- EricHazen - 13 Aug 2016