🌌 Mission Log: NASA Stardance Space Clock

Engineering Log 01: Mission Concept & System Architecture > Date: June 2026 | Crew: Mohammed Ibrahim & Dhanvir

🚀 1. The Mission Objective

For our Hack Club Stardance project, we are engineering an interactive, standalone NASA Space Clock using an Arduino. The goal is to build a piece of physical hardware that looks and feels like an authentic mission control console while managing accurate time and interactive mission parameters.

🎯 Key Project Goals

Retro Control Room Vibe: Avoid standard modern LCD screens; use a physical digital layout.
Zero Host Dependence: The hardware must retain exact time even if disconnected from the computer.
On-the-Fly Configuration: Use analog dials and tactile inputs to set timers and adjust settings without rewriting code.

🛠️ 2. Hardware Manifest & Design Choices

To achieve our goals, we selected a rugged, minimal component layout. By using smart wiring techniques, we are keeping our pin footprint as small as possible.

Component Purpose Technical Detail Arduino Uno Main Flight Computer Processes state logic and multiplexing 5416AS Display Mission Dashboard 4-digit, 7-segment Common Cathode layout DS3231 RTC Chronometer High-precision I2C Real-Time Clock with battery backup Potentiometer Telemetry Dial Analog input mapped dynamically from $0\text{–}60$ minutes Tactile Button Mode Selector Leverages internal INPUT_PULLUP resistor Buzzer Comm Chime / Alarm Outputs audio frequencies for system alerts

We explicitly chose the 5416AS 7-segment display to mimic retro NASA launch countdowns. However, a 4-digit display normally demands 12 dedicated digital pins! To keep pins open for our modules, we are implementing custom multiplexing code—flashing the digits sequentially at microsecond intervals so they appear solidly lit to the human eye.

🎛️ 3. System States & Logic Flow

The clock is designed around a continuous Finite State Machine (FSM). A single physical button press shifts the system through its operational modes: