Templarian / nfc-terminal

Vintage Holotape Computer

NFC Terminal

Goal: Vintage cartridge computer that stores data via NFC key fobs.

Holotape	Computer
	...

Guides

Guide	Description
Holotape	Step by step guide for making a Holotape cartridge.
Computer	Step by step guide for building the computer.
Software	Customization / development instructions.
FAQ	Troubleshooting and general answers.

Hardware

• Raspberry Pi Zero 2 W
• PN532 Chip
  • https://www.amazon.com/gp/product/B01I1J17LC/
• 1024x768 8" HDMI Non-Touch Display.
  • https://chicagodist.com/products/hdmi-8-ips-lcd-screen-kit-1024x768
  • https://www.adafruit.com/product/4338
• MIFARE DESFire EV1 2k/4k/8k Fobs
  • https://www.amazon.com/gp/product/B07D925N54/
  • EV1 or EV2, no security features are used.

Software

• Express for handling requests.
• HTML Canvas + JS
• Will try to use Consolas font if found.

NFC Lifecycle

• LED (5 Brightness)
• Ready
  • Cartridge slot LED Solid
  • Wait for cartridge
    • Cartridge Inserted
      • Cartridge slot LED Pulses
      • Read cartridge data
        • Process Data
      • Data Modified
        • Write Data
        • LED (255 Brightness)
    • Cartridge Removed
  • Repeat Wait for Cartridge
• Error
  • Logo Red

Data

All records must exist for the cartridge to be properally read.

All 5 records are written in order.

• Type
  • text, javascript
• Total Writes
  • 42
• Created Date
  • 2021-05-09T19:31:31Z
• Modified Date
  • 2021-05-09T19:31:31Z
• Text (~2k/4k/8k minus)
  • All text data.