sqyyy-jar / arduino-vault

Arduino Vault

This project is a PIN-manager for an Arduino Mega 2560.

The UI is shown on an OLED display and PINS are stored in encrypted form on a MicroSD card. Interacting with the UI is possible through a 4x4 keypad.

Modes & Keys

• Common (all states have these)
  • You can clear the current input with C
  • You can remove the last digit from the input with D
• Locked
  • You are here in the beginning
  • You can enter a PIN
  • You can unlock the vault with #
• Unlocked
  • You can enter a PIN ID (in the range 0 to 99)
  • You can lock the vault with *
  • You can select the PIN with #, A or B
• Edit
  • You can view the selected PIN
  • You can edit the selected PIN
  • You can discard changes and go back to the unlocked state with *
  • You can save changes and go back to the unlocked state with #

Pins (Mega 2560)

• MicroSD Card Adapter
  • MISO: 50
  • MOSI: 51
  • SCK: 52
  • CS: 4
• Keypad
  • Pins 22-29

Sources

• Libraries
  • SD (library for SD-card reader)
  • Adafruit SSD1306 (library for OLED display)
  • Keypad (library for 4x4 membrane keypad)
• Pin numbers
  • SD