Projekt GAS — 3D model

Click keys, cards and the motion sensor. Drag = rotate, mouse wheel = zoom, right-click/Shift = pan. The firmware logic is taken from alarm_system.ino.

Keypad D2–D9 I²C A4/A5 SPI D11–D13 SS A0 / RST A1 Buzzer D10 PIR A2 5 V 3.3 V GND

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LF07 · Arduino Uno R3

Projekt GAS

DISARMED

OLED · SH1106 128x64

Wrong tries 0/3 PIR OUT LOW Buzzer off

Keypad

Demo PIN 1234 · admin PIN 0000 (the real PINs are in the sketch). Your keyboard works too: Enter = #, Esc = *.

Actions

Card A is stored from the factory, card B can be added in the admin menu, the key fob has a 7-byte UID and never matches.

Stored cards · EEPROM

Serial monitor · 9600 baud

About this model

Built after the schematic and the pin table. States, timings (10 s exit delay, 30 s siren, 2 s error tone), sounds and OLED graphics match the sketch; the EEPROM is stored in your browser. Works offline too: just open docs/viewer/index.html.