Skip links

  • Skip to primary navigation
  • Skip to content
  • Skip to footer
Architolk projects
      • Introduction
      • User manual
        • Keys
      • Build
        • Calculator power
        • Calculator insides
        • Key matrix
        • MCU Pins
        • ESP32
        • Breadboard
        • Power
      • Theory
        • VFD
        • Zener regulator
        • Buck step-down converter
      • Resources

      Calculator resources

      • VFD driver datasheet
      • VFD datasheet
      • Noritake-elec - VFD operation
      • Futaba VFD application note
      • EEVBlog - How to hack VFD displays
      • ESP32 pinout reference
      • Canon calculator keys and glossary
      • User manual for the P1211-D - A comparable calculator
      • GitHub
      • Feed
      © 2026 Architolk projects. Powered by Jekyll & Minimal Mistakes.