Quantity   Component name
1 × Microcontroller: Arduino Mega 2560
1 × Display: 128x64 pixel monochrome LCD with parallel interface
1 × Modem: TCM3105 – an AFSK modem widely used in amateur packet radio for 1200 baud communication.
1 × GPS Module: NEO-M6 – provides accurate timestamping and positioning for message geotagging and navigation.
1 × RTC: DS3231 – real-time clock used to maintain time across reboots and synchronize encrypted sessions.
1 × Storage: microSD card – stores user settings, encryption keys, and logs.
1 × Input: USB Host shield – allows connection of a standard USB keyboard for message input.
1 × Enclosure: Post-apocalyptic inspired design – housed in a custom-made shell, optionally 3D printed or repurposed from metal casi
1 × Audio out to radio (Baofeng UV5R or equivalent)