A DIY Scrolling Number Clock is an eye-catching Maker project that moves away from traditional rotating hands, instead using a dynamic mechanism to cycle through numbers. In the DIY community, this concept generally follows one of two builds: a mechanical linear rolling tape clock (where numbers physically roll up and down) or an electronic matrix display clock (where digital numbers smoothly scroll across a screen).
Below is a foundational guide covering both approaches so you can choose the best build for your skill level. Option 1: The Mechanical “Linear” Scrolling Clock
This option features a physical strip or loop of printed numbers that mechanically slides or rolls vertically or horizontally to align the correct time within a viewing window. 🛠️ Core Components
Enclosure & Frame: Laser-cut plywood, MDF, or 3D-printed plastic housing.
The Scrolling Medium: A long paper or fabric tape printed with sequential numbers (00–59 for minutes, 1–12 or 0–23 for hours).
Drive Mechanism: Small 5V stepper motors (like the 28BYJ-48) or continuous rotation servos. Brain: An Arduino Nano or ESP32 microcontroller.
Timekeeper: A DS3231 Real-Time Clock (RTC) module to keep accurate time even when powered down. 📐 Step-by-Step Build Logic Linear Clock : 22 Steps (with Pictures) – Instructables